./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD --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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 00:00:02,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:00:02,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:00:02,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:00:02,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:00:02,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:00:02,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:00:02,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:00:02,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:00:02,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:00:02,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:00:02,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:00:02,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:00:02,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:00:02,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:00:02,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:00:02,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:00:02,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:00:02,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:00:02,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:00:02,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:00:02,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:00:02,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:00:02,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:00:02,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:00:02,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:00:02,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:00:02,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:00:02,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:00:02,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:00:02,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:00:02,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:00:02,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:00:02,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:00:02,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:00:02,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:00:02,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:00:02,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:00:02,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:00:02,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:00:02,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:00:02,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-29 00:00:02,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:00:02,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:00:02,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:00:02,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:00:02,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:00:02,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:00:02,867 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:00:02,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:00:02,867 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:00:02,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:00:02,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:00:02,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:00:02,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 00:00:02,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:00:02,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 00:00:02,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:00:02,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:00:02,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:00:02,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 00:00:02,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:00:02,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:00:02,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:00:02,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:00:02,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:00:02,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:00:02,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 00:00:02,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-29 00:00:02,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 00:00:02,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-29 00:00:02,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-29 00:00:02,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 00:00:02,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:00:02,874 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_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 [2021-10-29 00:00:03,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:00:03,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:00:03,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:00:03,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:00:03,212 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:00:03,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2021-10-29 00:00:03,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/data/af15ff9eb/5685554bb6444cb7b96ced519eaea318/FLAG6b387d369 [2021-10-29 00:00:03,813 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:00:03,815 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2021-10-29 00:00:03,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/data/af15ff9eb/5685554bb6444cb7b96ced519eaea318/FLAG6b387d369 [2021-10-29 00:00:04,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/data/af15ff9eb/5685554bb6444cb7b96ced519eaea318 [2021-10-29 00:00:04,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:00:04,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:00:04,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:00:04,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:00:04,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:00:04,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:04,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8e4030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04, skipping insertion in model container [2021-10-29 00:00:04,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:04,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:00:04,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:00:04,713 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_56bbe684-f571-492a-93f9-f7fc74e6ad6e/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2021-10-29 00:00:04,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:00:04,770 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:00:04,830 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_56bbe684-f571-492a-93f9-f7fc74e6ad6e/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2021-10-29 00:00:04,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:00:04,875 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:00:04,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04 WrapperNode [2021-10-29 00:00:04,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:00:04,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:00:04,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:00:04,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:00:04,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:04,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:04,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:00:04,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:00:04,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:00:04,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:00:04,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:04,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:05,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:05,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:05,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:05,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:05,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:05,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:00:05,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:00:05,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:00:05,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:00:05,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (1/1) ... [2021-10-29 00:00:05,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:00:05,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:00:05,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:00:05,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:00:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-29 00:00:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-29 00:00:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-29 00:00:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-29 00:00:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-29 00:00:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-29 00:00:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 00:00:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:00:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 00:00:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-29 00:00:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-29 00:00:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:00:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:00:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 00:00:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 00:00:05,203 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-29 00:00:05,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:00:05,653 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-29 00:00:05,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:00:05 BoogieIcfgContainer [2021-10-29 00:00:05,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:00:05,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:00:05,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:00:05,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:00:05,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:00:04" (1/3) ... [2021-10-29 00:00:05,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412cfb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:00:05, skipping insertion in model container [2021-10-29 00:00:05,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:04" (2/3) ... [2021-10-29 00:00:05,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412cfb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:00:05, skipping insertion in model container [2021-10-29 00:00:05,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:00:05" (3/3) ... [2021-10-29 00:00:05,664 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2021-10-29 00:00:05,670 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 00:00:05,670 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:00:05,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 00:00:05,670 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 00:00:05,704 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,704 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,711 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,711 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,712 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,712 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,712 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,713 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,715 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,715 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,721 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,722 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,724 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,725 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,725 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,725 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,727 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,727 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,727 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,727 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,729 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,745 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,750 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,750 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,750 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 00:00:05,785 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-29 00:00:05,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:00:05,839 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 00:00:05,839 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-29 00:00:05,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 270 flow [2021-10-29 00:00:05,908 INFO L129 PetriNetUnfolder]: 16/120 cut-off events. [2021-10-29 00:00:05,908 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-29 00:00:05,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 16/120 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2021-10-29 00:00:05,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 270 flow [2021-10-29 00:00:05,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 110 transitions, 238 flow [2021-10-29 00:00:05,977 INFO L129 PetriNetUnfolder]: 16/109 cut-off events. [2021-10-29 00:00:05,978 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-29 00:00:05,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:05,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:05,980 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash -573888129, now seen corresponding path program 1 times [2021-10-29 00:00:05,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:06,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103856994] [2021-10-29 00:00:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:06,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:00:06,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:06,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103856994] [2021-10-29 00:00:06,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103856994] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:06,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:06,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 00:00:06,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850953432] [2021-10-29 00:00:06,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 00:00:06,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:06,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 00:00:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:00:06,218 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 123 [2021-10-29 00:00:06,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 238 flow. Second operand has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:06,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 123 [2021-10-29 00:00:06,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:06,250 INFO L129 PetriNetUnfolder]: 12/106 cut-off events. [2021-10-29 00:00:06,251 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-29 00:00:06,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 106 events. 12/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 4/97 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2021-10-29 00:00:06,254 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 0 selfloop transitions, 0 changer transitions 1/106 dead transitions. [2021-10-29 00:00:06,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 106 transitions, 230 flow [2021-10-29 00:00:06,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:00:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-29 00:00:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 240 transitions. [2021-10-29 00:00:06,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.975609756097561 [2021-10-29 00:00:06,267 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 240 transitions. [2021-10-29 00:00:06,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 240 transitions. [2021-10-29 00:00:06,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:06,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 240 transitions. [2021-10-29 00:00:06,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,282 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,284 INFO L186 Difference]: Start difference. First operand has 104 places, 110 transitions, 238 flow. Second operand 2 states and 240 transitions. [2021-10-29 00:00:06,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 106 transitions, 230 flow [2021-10-29 00:00:06,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 218 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-29 00:00:06,293 INFO L242 Difference]: Finished difference. Result has 99 places, 105 transitions, 216 flow [2021-10-29 00:00:06,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=99, PETRI_TRANSITIONS=105} [2021-10-29 00:00:06,296 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, -5 predicate places. [2021-10-29 00:00:06,296 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 105 transitions, 216 flow [2021-10-29 00:00:06,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,296 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:06,297 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:06,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 00:00:06,297 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2142048250, now seen corresponding path program 1 times [2021-10-29 00:00:06,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:06,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772189986] [2021-10-29 00:00:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:06,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:00:06,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:06,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772189986] [2021-10-29 00:00:06,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772189986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:06,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:06,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:00:06,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020458196] [2021-10-29 00:00:06,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:00:06,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:00:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:00:06,537 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 123 [2021-10-29 00:00:06,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 105 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:06,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 123 [2021-10-29 00:00:06,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:06,594 INFO L129 PetriNetUnfolder]: 15/118 cut-off events. [2021-10-29 00:00:06,595 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-29 00:00:06,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 118 events. 15/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 134 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 128. Up to 7 conditions per place. [2021-10-29 00:00:06,601 INFO L132 encePairwiseOnDemand]: 120/123 looper letters, 5 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2021-10-29 00:00:06,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 234 flow [2021-10-29 00:00:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:00:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-29 00:00:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-10-29 00:00:06,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.940379403794038 [2021-10-29 00:00:06,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-10-29 00:00:06,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-10-29 00:00:06,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:06,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-10-29 00:00:06,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,612 INFO L186 Difference]: Start difference. First operand has 99 places, 105 transitions, 216 flow. Second operand 3 states and 347 transitions. [2021-10-29 00:00:06,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 234 flow [2021-10-29 00:00:06,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-29 00:00:06,617 INFO L242 Difference]: Finished difference. Result has 101 places, 106 transitions, 228 flow [2021-10-29 00:00:06,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2021-10-29 00:00:06,622 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, -3 predicate places. [2021-10-29 00:00:06,622 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 228 flow [2021-10-29 00:00:06,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,623 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:06,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:06,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 00:00:06,624 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1436352828, now seen corresponding path program 1 times [2021-10-29 00:00:06,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:06,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774773005] [2021-10-29 00:00:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:06,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:00:06,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:06,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774773005] [2021-10-29 00:00:06,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774773005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:06,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:06,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:00:06,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996199767] [2021-10-29 00:00:06,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:00:06,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:06,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:00:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:00:06,727 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 123 [2021-10-29 00:00:06,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:06,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 123 [2021-10-29 00:00:06,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:06,765 INFO L129 PetriNetUnfolder]: 18/131 cut-off events. [2021-10-29 00:00:06,765 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-29 00:00:06,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 131 events. 18/131 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 184 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 146. Up to 7 conditions per place. [2021-10-29 00:00:06,768 INFO L132 encePairwiseOnDemand]: 120/123 looper letters, 5 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2021-10-29 00:00:06,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 108 transitions, 246 flow [2021-10-29 00:00:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:00:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-29 00:00:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-10-29 00:00:06,772 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.940379403794038 [2021-10-29 00:00:06,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-10-29 00:00:06,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-10-29 00:00:06,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:06,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-10-29 00:00:06,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,777 INFO L186 Difference]: Start difference. First operand has 101 places, 106 transitions, 228 flow. Second operand 3 states and 347 transitions. [2021-10-29 00:00:06,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 108 transitions, 246 flow [2021-10-29 00:00:06,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-29 00:00:06,781 INFO L242 Difference]: Finished difference. Result has 103 places, 107 transitions, 238 flow [2021-10-29 00:00:06,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=103, PETRI_TRANSITIONS=107} [2021-10-29 00:00:06,782 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, -1 predicate places. [2021-10-29 00:00:06,782 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 107 transitions, 238 flow [2021-10-29 00:00:06,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:06,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:06,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 00:00:06,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2107082484, now seen corresponding path program 1 times [2021-10-29 00:00:06,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:06,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482557543] [2021-10-29 00:00:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:06,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 00:00:06,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:06,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482557543] [2021-10-29 00:00:06,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482557543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:06,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:06,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:00:06,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686199065] [2021-10-29 00:00:06,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:00:06,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:06,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:00:06,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:00:06,928 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 123 [2021-10-29 00:00:06,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 107 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:06,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:06,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 123 [2021-10-29 00:00:06,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:07,006 INFO L129 PetriNetUnfolder]: 21/144 cut-off events. [2021-10-29 00:00:07,006 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-29 00:00:07,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 144 events. 21/144 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 243 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 163. Up to 7 conditions per place. [2021-10-29 00:00:07,013 INFO L132 encePairwiseOnDemand]: 120/123 looper letters, 5 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2021-10-29 00:00:07,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 256 flow [2021-10-29 00:00:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:00:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-29 00:00:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-10-29 00:00:07,016 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.940379403794038 [2021-10-29 00:00:07,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-10-29 00:00:07,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-10-29 00:00:07,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:07,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-10-29 00:00:07,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,023 INFO L186 Difference]: Start difference. First operand has 103 places, 107 transitions, 238 flow. Second operand 3 states and 347 transitions. [2021-10-29 00:00:07,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 256 flow [2021-10-29 00:00:07,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 109 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-29 00:00:07,030 INFO L242 Difference]: Finished difference. Result has 105 places, 108 transitions, 248 flow [2021-10-29 00:00:07,030 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=105, PETRI_TRANSITIONS=108} [2021-10-29 00:00:07,031 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 1 predicate places. [2021-10-29 00:00:07,031 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 108 transitions, 248 flow [2021-10-29 00:00:07,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,032 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:07,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:07,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 00:00:07,033 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash -552760208, now seen corresponding path program 1 times [2021-10-29 00:00:07,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:07,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033077145] [2021-10-29 00:00:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:07,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 00:00:07,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:07,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033077145] [2021-10-29 00:00:07,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033077145] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:07,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:07,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 00:00:07,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798998119] [2021-10-29 00:00:07,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:00:07,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:00:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:00:07,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 123 [2021-10-29 00:00:07,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 108 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:07,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 123 [2021-10-29 00:00:07,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:07,358 INFO L129 PetriNetUnfolder]: 17/161 cut-off events. [2021-10-29 00:00:07,358 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-29 00:00:07,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 161 events. 17/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 299 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 192. Up to 7 conditions per place. [2021-10-29 00:00:07,362 INFO L132 encePairwiseOnDemand]: 116/123 looper letters, 4 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2021-10-29 00:00:07,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 266 flow [2021-10-29 00:00:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:00:07,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-29 00:00:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2021-10-29 00:00:07,365 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.926829268292683 [2021-10-29 00:00:07,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:07,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,371 INFO L186 Difference]: Start difference. First operand has 105 places, 108 transitions, 248 flow. Second operand 4 states and 456 transitions. [2021-10-29 00:00:07,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 266 flow [2021-10-29 00:00:07,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-29 00:00:07,379 INFO L242 Difference]: Finished difference. Result has 109 places, 109 transitions, 271 flow [2021-10-29 00:00:07,379 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=109, PETRI_TRANSITIONS=109} [2021-10-29 00:00:07,380 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 5 predicate places. [2021-10-29 00:00:07,380 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 109 transitions, 271 flow [2021-10-29 00:00:07,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:07,381 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:07,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 00:00:07,381 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1978428558, now seen corresponding path program 1 times [2021-10-29 00:00:07,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:07,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191340184] [2021-10-29 00:00:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:07,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 00:00:07,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:07,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191340184] [2021-10-29 00:00:07,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191340184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:07,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:07,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 00:00:07,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919113039] [2021-10-29 00:00:07,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:00:07,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:07,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:00:07,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:00:07,511 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 123 [2021-10-29 00:00:07,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 109 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:07,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 123 [2021-10-29 00:00:07,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:07,603 INFO L129 PetriNetUnfolder]: 13/182 cut-off events. [2021-10-29 00:00:07,604 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-29 00:00:07,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 182 events. 13/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 382 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2021-10-29 00:00:07,607 INFO L132 encePairwiseOnDemand]: 116/123 looper letters, 4 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2021-10-29 00:00:07,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 289 flow [2021-10-29 00:00:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:00:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-29 00:00:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2021-10-29 00:00:07,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.926829268292683 [2021-10-29 00:00:07,618 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:07,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,623 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,624 INFO L186 Difference]: Start difference. First operand has 109 places, 109 transitions, 271 flow. Second operand 4 states and 456 transitions. [2021-10-29 00:00:07,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 289 flow [2021-10-29 00:00:07,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 110 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-29 00:00:07,630 INFO L242 Difference]: Finished difference. Result has 113 places, 110 transitions, 295 flow [2021-10-29 00:00:07,630 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2021-10-29 00:00:07,630 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 9 predicate places. [2021-10-29 00:00:07,631 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 295 flow [2021-10-29 00:00:07,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,632 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:07,632 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:07,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 00:00:07,633 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:07,634 INFO L85 PathProgramCache]: Analyzing trace with hash -410561811, now seen corresponding path program 1 times [2021-10-29 00:00:07,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:07,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241004445] [2021-10-29 00:00:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:07,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-29 00:00:07,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:07,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241004445] [2021-10-29 00:00:07,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241004445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:07,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:07,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 00:00:07,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038826120] [2021-10-29 00:00:07,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:00:07,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:07,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:00:07,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:00:07,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 123 [2021-10-29 00:00:07,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:07,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 123 [2021-10-29 00:00:07,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:07,828 INFO L129 PetriNetUnfolder]: 9/226 cut-off events. [2021-10-29 00:00:07,828 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-10-29 00:00:07,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 226 events. 9/226 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 670 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 296. Up to 8 conditions per place. [2021-10-29 00:00:07,832 INFO L132 encePairwiseOnDemand]: 116/123 looper letters, 4 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2021-10-29 00:00:07,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 313 flow [2021-10-29 00:00:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:00:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-29 00:00:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2021-10-29 00:00:07,834 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.926829268292683 [2021-10-29 00:00:07,834 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:07,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2021-10-29 00:00:07,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,838 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,839 INFO L186 Difference]: Start difference. First operand has 113 places, 110 transitions, 295 flow. Second operand 4 states and 456 transitions. [2021-10-29 00:00:07,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 313 flow [2021-10-29 00:00:07,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-29 00:00:07,843 INFO L242 Difference]: Finished difference. Result has 117 places, 111 transitions, 319 flow [2021-10-29 00:00:07,844 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=117, PETRI_TRANSITIONS=111} [2021-10-29 00:00:07,844 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 13 predicate places. [2021-10-29 00:00:07,844 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 319 flow [2021-10-29 00:00:07,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:07,845 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:07,845 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:07,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 00:00:07,845 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:07,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash 391909062, now seen corresponding path program 1 times [2021-10-29 00:00:07,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:07,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156329642] [2021-10-29 00:00:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:07,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 00:00:08,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:08,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156329642] [2021-10-29 00:00:08,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156329642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:08,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535353821] [2021-10-29 00:00:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:08,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:08,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:00:08,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:00:08,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 00:00:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:08,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 00:00:08,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:00:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 00:00:08,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535353821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:08,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:00:08,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-29 00:00:08,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815391066] [2021-10-29 00:00:08,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:00:08,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:00:08,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:00:08,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 123 [2021-10-29 00:00:08,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:08,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:08,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 123 [2021-10-29 00:00:08,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:09,288 INFO L129 PetriNetUnfolder]: 403/2207 cut-off events. [2021-10-29 00:00:09,288 INFO L130 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2021-10-29 00:00:09,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3695 conditions, 2207 events. 403/2207 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 18563 event pairs, 48 based on Foata normal form. 1/2085 useless extension candidates. Maximal degree in co-relation 3682. Up to 401 conditions per place. [2021-10-29 00:00:09,360 INFO L132 encePairwiseOnDemand]: 113/123 looper letters, 18 selfloop transitions, 12 changer transitions 3/133 dead transitions. [2021-10-29 00:00:09,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 133 transitions, 429 flow [2021-10-29 00:00:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 00:00:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-29 00:00:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 776 transitions. [2021-10-29 00:00:09,364 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9012775842044135 [2021-10-29 00:00:09,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 776 transitions. [2021-10-29 00:00:09,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 776 transitions. [2021-10-29 00:00:09,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:09,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 776 transitions. [2021-10-29 00:00:09,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.85714285714286) internal successors, (776), 7 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:09,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:09,372 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:09,372 INFO L186 Difference]: Start difference. First operand has 117 places, 111 transitions, 319 flow. Second operand 7 states and 776 transitions. [2021-10-29 00:00:09,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 133 transitions, 429 flow [2021-10-29 00:00:09,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 133 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-29 00:00:09,380 INFO L242 Difference]: Finished difference. Result has 127 places, 122 transitions, 400 flow [2021-10-29 00:00:09,381 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2021-10-29 00:00:09,382 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 23 predicate places. [2021-10-29 00:00:09,382 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 400 flow [2021-10-29 00:00:09,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:09,383 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:09,383 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:09,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:00:09,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:09,605 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:09,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash -718475638, now seen corresponding path program 2 times [2021-10-29 00:00:09,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:09,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261897072] [2021-10-29 00:00:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:09,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 00:00:09,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:09,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261897072] [2021-10-29 00:00:09,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261897072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:09,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910471785] [2021-10-29 00:00:09,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:00:09,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:09,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:00:09,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:00:09,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 00:00:10,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:00:10,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:00:10,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 00:00:10,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:00:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 00:00:10,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910471785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:10,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:00:10,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-29 00:00:10,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097423203] [2021-10-29 00:00:10,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:00:10,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:00:10,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:00:10,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 123 [2021-10-29 00:00:10,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 400 flow. Second operand has 8 states, 8 states have (on average 107.375) internal successors, (859), 8 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:10,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:10,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 123 [2021-10-29 00:00:10,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:11,271 INFO L129 PetriNetUnfolder]: 513/2823 cut-off events. [2021-10-29 00:00:11,271 INFO L130 PetriNetUnfolder]: For 847/911 co-relation queries the response was YES. [2021-10-29 00:00:11,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5540 conditions, 2823 events. 513/2823 cut-off events. For 847/911 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 25695 event pairs, 102 based on Foata normal form. 31/2678 useless extension candidates. Maximal degree in co-relation 5522. Up to 401 conditions per place. [2021-10-29 00:00:11,321 INFO L132 encePairwiseOnDemand]: 113/123 looper letters, 22 selfloop transitions, 26 changer transitions 3/151 dead transitions. [2021-10-29 00:00:11,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 151 transitions, 610 flow [2021-10-29 00:00:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:00:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-29 00:00:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 889 transitions. [2021-10-29 00:00:11,326 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9034552845528455 [2021-10-29 00:00:11,326 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 889 transitions. [2021-10-29 00:00:11,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 889 transitions. [2021-10-29 00:00:11,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:11,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 889 transitions. [2021-10-29 00:00:11,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:11,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:11,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:11,333 INFO L186 Difference]: Start difference. First operand has 127 places, 122 transitions, 400 flow. Second operand 8 states and 889 transitions. [2021-10-29 00:00:11,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 151 transitions, 610 flow [2021-10-29 00:00:11,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 151 transitions, 592 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-10-29 00:00:11,341 INFO L242 Difference]: Finished difference. Result has 134 places, 136 transitions, 543 flow [2021-10-29 00:00:11,341 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=543, PETRI_PLACES=134, PETRI_TRANSITIONS=136} [2021-10-29 00:00:11,342 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 30 predicate places. [2021-10-29 00:00:11,342 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 136 transitions, 543 flow [2021-10-29 00:00:11,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.375) internal successors, (859), 8 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:11,343 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:11,343 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:11,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-29 00:00:11,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:11,565 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:11,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 618855506, now seen corresponding path program 3 times [2021-10-29 00:00:11,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:11,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711111855] [2021-10-29 00:00:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:11,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:00:11,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:11,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711111855] [2021-10-29 00:00:11,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711111855] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:11,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764842604] [2021-10-29 00:00:11,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:00:11,701 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:11,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:00:11,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:00:11,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 00:00:11,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-29 00:00:11,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:00:11,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 00:00:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:00:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:00:12,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764842604] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:12,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:00:12,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-29 00:00:12,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038591095] [2021-10-29 00:00:12,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 00:00:12,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 00:00:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:00:12,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 123 [2021-10-29 00:00:12,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 136 transitions, 543 flow. Second operand has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:12,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:12,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 123 [2021-10-29 00:00:12,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:13,186 INFO L129 PetriNetUnfolder]: 692/3648 cut-off events. [2021-10-29 00:00:13,187 INFO L130 PetriNetUnfolder]: For 2433/2660 co-relation queries the response was YES. [2021-10-29 00:00:13,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7975 conditions, 3648 events. 692/3648 cut-off events. For 2433/2660 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 34923 event pairs, 44 based on Foata normal form. 43/3458 useless extension candidates. Maximal degree in co-relation 7954. Up to 451 conditions per place. [2021-10-29 00:00:13,262 INFO L132 encePairwiseOnDemand]: 113/123 looper letters, 40 selfloop transitions, 31 changer transitions 3/174 dead transitions. [2021-10-29 00:00:13,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 174 transitions, 881 flow [2021-10-29 00:00:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 00:00:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-29 00:00:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1004 transitions. [2021-10-29 00:00:13,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9069557362240289 [2021-10-29 00:00:13,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1004 transitions. [2021-10-29 00:00:13,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1004 transitions. [2021-10-29 00:00:13,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:13,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1004 transitions. [2021-10-29 00:00:13,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.55555555555556) internal successors, (1004), 9 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:13,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 123.0) internal successors, (1230), 10 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:13,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 123.0) internal successors, (1230), 10 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:13,277 INFO L186 Difference]: Start difference. First operand has 134 places, 136 transitions, 543 flow. Second operand 9 states and 1004 transitions. [2021-10-29 00:00:13,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 174 transitions, 881 flow [2021-10-29 00:00:13,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 174 transitions, 784 flow, removed 45 selfloop flow, removed 3 redundant places. [2021-10-29 00:00:13,290 INFO L242 Difference]: Finished difference. Result has 140 places, 155 transitions, 681 flow [2021-10-29 00:00:13,291 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=681, PETRI_PLACES=140, PETRI_TRANSITIONS=155} [2021-10-29 00:00:13,292 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 36 predicate places. [2021-10-29 00:00:13,292 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 155 transitions, 681 flow [2021-10-29 00:00:13,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:13,293 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:13,293 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:13,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 00:00:13,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:13,521 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:13,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash -125583196, now seen corresponding path program 4 times [2021-10-29 00:00:13,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:13,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50966526] [2021-10-29 00:00:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:13,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:00:13,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:13,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50966526] [2021-10-29 00:00:13,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50966526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:13,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954080079] [2021-10-29 00:00:13,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 00:00:13,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:13,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:00:13,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:00:13,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 00:00:14,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 00:00:14,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:00:14,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 00:00:14,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:00:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:00:14,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954080079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:14,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:00:14,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-29 00:00:14,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418181600] [2021-10-29 00:00:14,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 00:00:14,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:14,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 00:00:14,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:00:14,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 123 [2021-10-29 00:00:14,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 155 transitions, 681 flow. Second operand has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:14,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:14,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 123 [2021-10-29 00:00:14,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:16,071 INFO L129 PetriNetUnfolder]: 956/5089 cut-off events. [2021-10-29 00:00:16,071 INFO L130 PetriNetUnfolder]: For 3485/4132 co-relation queries the response was YES. [2021-10-29 00:00:16,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11162 conditions, 5089 events. 956/5089 cut-off events. For 3485/4132 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 53260 event pairs, 44 based on Foata normal form. 205/4955 useless extension candidates. Maximal degree in co-relation 11140. Up to 703 conditions per place. [2021-10-29 00:00:16,166 INFO L132 encePairwiseOnDemand]: 113/123 looper letters, 45 selfloop transitions, 61 changer transitions 3/209 dead transitions. [2021-10-29 00:00:16,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 209 transitions, 1191 flow [2021-10-29 00:00:16,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 00:00:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-29 00:00:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1004 transitions. [2021-10-29 00:00:16,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9069557362240289 [2021-10-29 00:00:16,171 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1004 transitions. [2021-10-29 00:00:16,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1004 transitions. [2021-10-29 00:00:16,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:16,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1004 transitions. [2021-10-29 00:00:16,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.55555555555556) internal successors, (1004), 9 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:16,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 123.0) internal successors, (1230), 10 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:16,179 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 123.0) internal successors, (1230), 10 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:16,179 INFO L186 Difference]: Start difference. First operand has 140 places, 155 transitions, 681 flow. Second operand 9 states and 1004 transitions. [2021-10-29 00:00:16,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 209 transitions, 1191 flow [2021-10-29 00:00:16,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 209 transitions, 1143 flow, removed 24 selfloop flow, removed 2 redundant places. [2021-10-29 00:00:16,194 INFO L242 Difference]: Finished difference. Result has 150 places, 190 transitions, 1140 flow [2021-10-29 00:00:16,194 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1140, PETRI_PLACES=150, PETRI_TRANSITIONS=190} [2021-10-29 00:00:16,195 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 46 predicate places. [2021-10-29 00:00:16,195 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 190 transitions, 1140 flow [2021-10-29 00:00:16,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:16,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:16,196 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:16,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 00:00:16,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:16,416 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1153909038, now seen corresponding path program 5 times [2021-10-29 00:00:16,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:16,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815964839] [2021-10-29 00:00:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:16,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 00:00:16,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:16,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815964839] [2021-10-29 00:00:16,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815964839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:16,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021105034] [2021-10-29 00:00:16,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-29 00:00:16,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:00:16,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:00:16,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:00:16,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 00:00:16,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-29 00:00:16,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:00:16,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 00:00:16,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:00:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 00:00:17,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021105034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:00:17,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:00:17,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-29 00:00:17,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667904430] [2021-10-29 00:00:17,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 00:00:17,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:17,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 00:00:17,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:00:17,319 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 123 [2021-10-29 00:00:17,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 190 transitions, 1140 flow. Second operand has 10 states, 10 states have (on average 107.1) internal successors, (1071), 10 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:17,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:17,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 123 [2021-10-29 00:00:17,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:18,593 INFO L129 PetriNetUnfolder]: 955/5059 cut-off events. [2021-10-29 00:00:18,593 INFO L130 PetriNetUnfolder]: For 7156/8118 co-relation queries the response was YES. [2021-10-29 00:00:18,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12718 conditions, 5059 events. 955/5059 cut-off events. For 7156/8118 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 52906 event pairs, 28 based on Foata normal form. 453/5198 useless extension candidates. Maximal degree in co-relation 12691. Up to 611 conditions per place. [2021-10-29 00:00:18,710 INFO L132 encePairwiseOnDemand]: 113/123 looper letters, 20 selfloop transitions, 102 changer transitions 3/225 dead transitions. [2021-10-29 00:00:18,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 225 transitions, 1604 flow [2021-10-29 00:00:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:00:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-29 00:00:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1107 transitions. [2021-10-29 00:00:18,715 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-10-29 00:00:18,715 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1107 transitions. [2021-10-29 00:00:18,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1107 transitions. [2021-10-29 00:00:18,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:18,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1107 transitions. [2021-10-29 00:00:18,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.7) internal successors, (1107), 10 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:18,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:18,724 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:18,724 INFO L186 Difference]: Start difference. First operand has 150 places, 190 transitions, 1140 flow. Second operand 10 states and 1107 transitions. [2021-10-29 00:00:18,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 225 transitions, 1604 flow [2021-10-29 00:00:18,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 225 transitions, 1541 flow, removed 25 selfloop flow, removed 3 redundant places. [2021-10-29 00:00:18,751 INFO L242 Difference]: Finished difference. Result has 157 places, 206 transitions, 1480 flow [2021-10-29 00:00:18,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1480, PETRI_PLACES=157, PETRI_TRANSITIONS=206} [2021-10-29 00:00:18,752 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 53 predicate places. [2021-10-29 00:00:18,752 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 206 transitions, 1480 flow [2021-10-29 00:00:18,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.1) internal successors, (1071), 10 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:18,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:18,753 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:18,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 00:00:18,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-29 00:00:18,969 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2100960995, now seen corresponding path program 6 times [2021-10-29 00:00:18,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:18,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620778692] [2021-10-29 00:00:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:18,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-29 00:00:19,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:19,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620778692] [2021-10-29 00:00:19,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620778692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:19,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:19,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:00:19,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874454136] [2021-10-29 00:00:19,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:00:19,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:00:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:00:19,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 123 [2021-10-29 00:00:19,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 206 transitions, 1480 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:19,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:19,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 123 [2021-10-29 00:00:19,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:19,859 INFO L129 PetriNetUnfolder]: 951/4784 cut-off events. [2021-10-29 00:00:19,860 INFO L130 PetriNetUnfolder]: For 7570/8164 co-relation queries the response was YES. [2021-10-29 00:00:19,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12532 conditions, 4784 events. 951/4784 cut-off events. For 7570/8164 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 48929 event pairs, 28 based on Foata normal form. 146/4623 useless extension candidates. Maximal degree in co-relation 12504. Up to 585 conditions per place. [2021-10-29 00:00:20,081 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 3 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2021-10-29 00:00:20,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 207 transitions, 1496 flow [2021-10-29 00:00:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:00:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-29 00:00:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2021-10-29 00:00:20,083 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9376693766937669 [2021-10-29 00:00:20,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2021-10-29 00:00:20,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2021-10-29 00:00:20,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:20,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2021-10-29 00:00:20,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:20,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:20,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:20,087 INFO L186 Difference]: Start difference. First operand has 157 places, 206 transitions, 1480 flow. Second operand 3 states and 346 transitions. [2021-10-29 00:00:20,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 207 transitions, 1496 flow [2021-10-29 00:00:20,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 207 transitions, 1440 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-10-29 00:00:20,119 INFO L242 Difference]: Finished difference. Result has 155 places, 207 transitions, 1446 flow [2021-10-29 00:00:20,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1446, PETRI_PLACES=155, PETRI_TRANSITIONS=207} [2021-10-29 00:00:20,119 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 51 predicate places. [2021-10-29 00:00:20,119 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 207 transitions, 1446 flow [2021-10-29 00:00:20,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:20,120 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:20,120 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:20,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-29 00:00:20,121 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -393216858, now seen corresponding path program 7 times [2021-10-29 00:00:20,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:20,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361428675] [2021-10-29 00:00:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:20,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 00:00:20,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:20,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361428675] [2021-10-29 00:00:20,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361428675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:20,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:20,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:00:20,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698357010] [2021-10-29 00:00:20,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:00:20,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:20,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:00:20,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:00:20,176 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 123 [2021-10-29 00:00:20,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 207 transitions, 1446 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:20,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:20,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 123 [2021-10-29 00:00:20,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:21,131 INFO L129 PetriNetUnfolder]: 951/4673 cut-off events. [2021-10-29 00:00:21,131 INFO L130 PetriNetUnfolder]: For 6909/7407 co-relation queries the response was YES. [2021-10-29 00:00:21,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12416 conditions, 4673 events. 951/4673 cut-off events. For 6909/7407 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 47363 event pairs, 28 based on Foata normal form. 136/4505 useless extension candidates. Maximal degree in co-relation 12390. Up to 537 conditions per place. [2021-10-29 00:00:21,244 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 3 selfloop transitions, 4 changer transitions 0/208 dead transitions. [2021-10-29 00:00:21,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 208 transitions, 1462 flow [2021-10-29 00:00:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:00:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-29 00:00:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2021-10-29 00:00:21,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9376693766937669 [2021-10-29 00:00:21,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2021-10-29 00:00:21,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2021-10-29 00:00:21,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:21,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2021-10-29 00:00:21,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:21,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:21,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:21,252 INFO L186 Difference]: Start difference. First operand has 155 places, 207 transitions, 1446 flow. Second operand 3 states and 346 transitions. [2021-10-29 00:00:21,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 208 transitions, 1462 flow [2021-10-29 00:00:21,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 208 transitions, 1452 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-29 00:00:21,287 INFO L242 Difference]: Finished difference. Result has 157 places, 208 transitions, 1458 flow [2021-10-29 00:00:21,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1458, PETRI_PLACES=157, PETRI_TRANSITIONS=208} [2021-10-29 00:00:21,288 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 53 predicate places. [2021-10-29 00:00:21,288 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 208 transitions, 1458 flow [2021-10-29 00:00:21,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:21,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-29 00:00:21,288 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:21,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-29 00:00:21,290 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 00:00:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1097024207, now seen corresponding path program 8 times [2021-10-29 00:00:21,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:00:21,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952687201] [2021-10-29 00:00:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:21,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:00:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 00:00:21,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:00:21,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952687201] [2021-10-29 00:00:21,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952687201] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:21,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:21,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:00:21,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323674662] [2021-10-29 00:00:21,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:00:21,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:00:21,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:00:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:00:21,342 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 123 [2021-10-29 00:00:21,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 208 transitions, 1458 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:21,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-29 00:00:21,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 123 [2021-10-29 00:00:21,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-29 00:00:22,227 INFO L129 PetriNetUnfolder]: 951/4605 cut-off events. [2021-10-29 00:00:22,227 INFO L130 PetriNetUnfolder]: For 7049/7509 co-relation queries the response was YES. [2021-10-29 00:00:22,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12706 conditions, 4605 events. 951/4605 cut-off events. For 7049/7509 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 46587 event pairs, 28 based on Foata normal form. 178/4448 useless extension candidates. Maximal degree in co-relation 12679. Up to 537 conditions per place. [2021-10-29 00:00:22,283 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 0 selfloop transitions, 0 changer transitions 204/204 dead transitions. [2021-10-29 00:00:22,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 204 transitions, 1462 flow [2021-10-29 00:00:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:00:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-29 00:00:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2021-10-29 00:00:22,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9376693766937669 [2021-10-29 00:00:22,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2021-10-29 00:00:22,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2021-10-29 00:00:22,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:00:22,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2021-10-29 00:00:22,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:22,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:22,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:22,292 INFO L186 Difference]: Start difference. First operand has 157 places, 208 transitions, 1458 flow. Second operand 3 states and 346 transitions. [2021-10-29 00:00:22,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 204 transitions, 1462 flow [2021-10-29 00:00:22,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 204 transitions, 1415 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-29 00:00:22,323 INFO L242 Difference]: Finished difference. Result has 151 places, 0 transitions, 0 flow [2021-10-29 00:00:22,324 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=151, PETRI_TRANSITIONS=0} [2021-10-29 00:00:22,324 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 47 predicate places. [2021-10-29 00:00:22,324 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 0 transitions, 0 flow [2021-10-29 00:00:22,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:00:22,327 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:00:22,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 00:00:22,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-29 00:00:22,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-29 00:00:22,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-29 00:00:22,332 INFO L731 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:22,335 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 00:00:22,335 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 00:00:22,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:00:22 BasicIcfg [2021-10-29 00:00:22,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 00:00:22,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:00:22,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:00:22,339 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:00:22,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:00:05" (3/4) ... [2021-10-29 00:00:22,343 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 00:00:22,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-29 00:00:22,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-29 00:00:22,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-29 00:00:22,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-29 00:00:22,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 00:00:22,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 00:00:22,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 00:00:22,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-29 00:00:22,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:00:22,401 INFO L168 Benchmark]: Toolchain (without parser) took 18205.68 ms. Allocated memory was 77.6 MB in the beginning and 2.0 GB in the end (delta: 2.0 GB). Free memory was 53.5 MB in the beginning and 1.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 487.7 MB. Max. memory is 16.1 GB. [2021-10-29 00:00:22,401 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:00:22,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.31 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 74.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:00:22,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.07 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 72.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:00:22,403 INFO L168 Benchmark]: Boogie Preprocessor took 111.56 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 70.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:00:22,404 INFO L168 Benchmark]: RCFGBuilder took 574.38 ms. Allocated memory is still 98.6 MB. Free memory was 70.7 MB in the beginning and 57.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 00:00:22,404 INFO L168 Benchmark]: TraceAbstraction took 16680.82 ms. Allocated memory was 98.6 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 56.5 MB in the beginning and 1.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 470.3 MB. Max. memory is 16.1 GB. [2021-10-29 00:00:22,405 INFO L168 Benchmark]: Witness Printer took 60.77 ms. Allocated memory is still 2.0 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:00:22,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 678.31 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 74.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.07 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 72.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.56 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 70.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 574.38 ms. Allocated memory is still 98.6 MB. Free memory was 70.7 MB in the beginning and 57.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16680.82 ms. Allocated memory was 98.6 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 56.5 MB in the beginning and 1.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 470.3 MB. Max. memory is 16.1 GB. * Witness Printer took 60.77 ms. Allocated memory is still 2.0 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 127]: 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 with 1 thread instances CFG has 7 procedures, 150 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.5s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 104 SDslu, 309 SDs, 0 SdLazy, 965 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 617 GetRequests, 538 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1480occurred in iteration=12, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1953 NumberOfCodeBlocks, 1918 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1933 ConstructedInterpolants, 0 QuantifiedInterpolants, 5334 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1097 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 129/291 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 00:00:22,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bbe684-f571-492a-93f9-f7fc74e6ad6e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...