./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:32:27,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:32:27,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:32:27,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:32:27,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:32:27,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:32:27,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:32:27,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:32:27,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:32:27,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:32:27,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:32:27,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:32:27,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:32:27,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:32:27,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:32:27,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:32:27,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:32:27,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:32:27,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:32:27,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:32:27,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:32:27,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:32:27,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:32:27,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:32:28,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:32:28,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:32:28,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:32:28,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:32:28,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:32:28,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:32:28,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:32:28,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:32:28,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:32:28,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:32:28,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:32:28,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:32:28,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:32:28,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:32:28,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:32:28,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:32:28,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:32:28,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:32:28,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:32:28,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:32:28,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:32:28,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:32:28,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:32:28,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:32:28,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:32:28,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:32:28,050 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:32:28,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:32:28,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:32:28,052 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:32:28,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:32:28,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:32:28,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:32:28,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:32:28,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:32:28,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:32:28,053 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:32:28,053 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:32:28,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:32:28,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:32:28,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:32:28,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:32:28,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:32:28,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:32:28,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:28,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:32:28,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:32:28,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:32:28,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:32:28,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:32:28,056 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:32:28,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:32:28,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:32:28,056 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_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2022-11-20 09:32:28,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:32:28,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:32:28,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:32:28,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:32:28,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:32:28,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/queue_ok.i [2022-11-20 09:32:31,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:32:31,783 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:32:31,784 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/sv-benchmarks/c/pthread/queue_ok.i [2022-11-20 09:32:31,810 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/data/5d2fbe0cb/bb7479b642db4a43bab3d816b95d536e/FLAG1e9bda167 [2022-11-20 09:32:31,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/data/5d2fbe0cb/bb7479b642db4a43bab3d816b95d536e [2022-11-20 09:32:31,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:32:31,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:32:31,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:31,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:32:31,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:32:31,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:31" (1/1) ... [2022-11-20 09:32:31,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca32bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:31, skipping insertion in model container [2022-11-20 09:32:31,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:31" (1/1) ... [2022-11-20 09:32:31,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:32:31,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:32:32,493 WARN L237 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_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2022-11-20 09:32:32,500 WARN L237 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_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2022-11-20 09:32:32,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:32,521 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:32:32,589 WARN L237 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_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2022-11-20 09:32:32,595 WARN L237 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_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2022-11-20 09:32:32,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:32,676 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:32:32,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32 WrapperNode [2022-11-20 09:32:32,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:32,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:32,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:32:32,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:32:32,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,772 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 214 [2022-11-20 09:32:32,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:32,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:32:32,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:32:32,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:32:32,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:32:32,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:32:32,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:32:32,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:32:32,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (1/1) ... [2022-11-20 09:32:32,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:32,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:32,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:32:32,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:32:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 09:32:32,945 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 09:32:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 09:32:32,946 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 09:32:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:32:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:32:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:32:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:32:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:32:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:32:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:32:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:32:32,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:32:32,949 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:32:33,125 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:32:33,127 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:32:33,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:32:33,661 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:32:33,662 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 09:32:33,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:33 BoogieIcfgContainer [2022-11-20 09:32:33,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:32:33,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:32:33,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:32:33,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:32:33,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:32:31" (1/3) ... [2022-11-20 09:32:33,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aac481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:33, skipping insertion in model container [2022-11-20 09:32:33,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:32" (2/3) ... [2022-11-20 09:32:33,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aac481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:33, skipping insertion in model container [2022-11-20 09:32:33,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:33" (3/3) ... [2022-11-20 09:32:33,673 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2022-11-20 09:32:33,681 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:32:33,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:32:33,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 09:32:33,690 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:32:33,799 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 09:32:33,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 251 transitions, 518 flow [2022-11-20 09:32:33,939 INFO L130 PetriNetUnfolder]: 13/249 cut-off events. [2022-11-20 09:32:33,939 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:32:33,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 249 events. 13/249 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 458 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 169. Up to 3 conditions per place. [2022-11-20 09:32:33,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 251 transitions, 518 flow [2022-11-20 09:32:33,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 239 transitions, 487 flow [2022-11-20 09:32:33,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:32:33,997 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@637addcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:32:33,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 09:32:34,043 INFO L130 PetriNetUnfolder]: 6/139 cut-off events. [2022-11-20 09:32:34,043 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 09:32:34,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:34,045 INFO L209 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] [2022-11-20 09:32:34,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:32:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1034587718, now seen corresponding path program 1 times [2022-11-20 09:32:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:34,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427749398] [2022-11-20 09:32:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:34,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:35,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:35,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427749398] [2022-11-20 09:32:35,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427749398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:35,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:35,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 09:32:35,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816534731] [2022-11-20 09:32:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:35,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:32:35,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:35,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:32:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:32:35,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 251 [2022-11-20 09:32:35,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 239 transitions, 487 flow. Second operand has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:35,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:35,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 251 [2022-11-20 09:32:35,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:36,970 INFO L130 PetriNetUnfolder]: 611/2940 cut-off events. [2022-11-20 09:32:36,970 INFO L131 PetriNetUnfolder]: For 88/91 co-relation queries the response was YES. [2022-11-20 09:32:36,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 2940 events. 611/2940 cut-off events. For 88/91 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 24667 event pairs, 459 based on Foata normal form. 118/2693 useless extension candidates. Maximal degree in co-relation 3504. Up to 882 conditions per place. [2022-11-20 09:32:36,994 INFO L137 encePairwiseOnDemand]: 234/251 looper letters, 42 selfloop transitions, 12 changer transitions 0/227 dead transitions. [2022-11-20 09:32:36,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 227 transitions, 571 flow [2022-11-20 09:32:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:32:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 09:32:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2477 transitions. [2022-11-20 09:32:37,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7591173766472571 [2022-11-20 09:32:37,019 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2477 transitions. [2022-11-20 09:32:37,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2477 transitions. [2022-11-20 09:32:37,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:37,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2477 transitions. [2022-11-20 09:32:37,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:37,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 251.0) internal successors, (3514), 14 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:37,050 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 251.0) internal successors, (3514), 14 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:37,052 INFO L175 Difference]: Start difference. First operand has 233 places, 239 transitions, 487 flow. Second operand 13 states and 2477 transitions. [2022-11-20 09:32:37,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 227 transitions, 571 flow [2022-11-20 09:32:37,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 227 transitions, 566 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:32:37,062 INFO L231 Difference]: Finished difference. Result has 235 places, 227 transitions, 482 flow [2022-11-20 09:32:37,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=482, PETRI_PLACES=235, PETRI_TRANSITIONS=227} [2022-11-20 09:32:37,070 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 2 predicate places. [2022-11-20 09:32:37,070 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 227 transitions, 482 flow [2022-11-20 09:32:37,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:37,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:37,072 INFO L209 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] [2022-11-20 09:32:37,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:32:37,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:32:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1366298667, now seen corresponding path program 1 times [2022-11-20 09:32:37,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:37,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105743127] [2022-11-20 09:32:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:37,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:48,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:48,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105743127] [2022-11-20 09:32:48,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105743127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:48,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:48,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 09:32:48,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917544574] [2022-11-20 09:32:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:48,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:32:48,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:32:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:32:48,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 251 [2022-11-20 09:32:48,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 227 transitions, 482 flow. Second operand has 18 states, 18 states have (on average 179.88888888888889) internal successors, (3238), 18 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:48,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:48,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 251 [2022-11-20 09:32:48,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:57,830 INFO L130 PetriNetUnfolder]: 1342/5185 cut-off events. [2022-11-20 09:32:57,832 INFO L131 PetriNetUnfolder]: For 31/34 co-relation queries the response was YES. [2022-11-20 09:32:57,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 5185 events. 1342/5185 cut-off events. For 31/34 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 46642 event pairs, 872 based on Foata normal form. 1/4450 useless extension candidates. Maximal degree in co-relation 7271. Up to 1675 conditions per place. [2022-11-20 09:32:57,864 INFO L137 encePairwiseOnDemand]: 230/251 looper letters, 108 selfloop transitions, 27 changer transitions 0/299 dead transitions. [2022-11-20 09:32:57,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 299 transitions, 902 flow [2022-11-20 09:32:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:32:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 09:32:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3699 transitions. [2022-11-20 09:32:57,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7368525896414343 [2022-11-20 09:32:57,874 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3699 transitions. [2022-11-20 09:32:57,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3699 transitions. [2022-11-20 09:32:57,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:57,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3699 transitions. [2022-11-20 09:32:57,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 184.95) internal successors, (3699), 20 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:57,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:57,897 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:57,898 INFO L175 Difference]: Start difference. First operand has 235 places, 227 transitions, 482 flow. Second operand 20 states and 3699 transitions. [2022-11-20 09:32:57,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 299 transitions, 902 flow [2022-11-20 09:32:57,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 299 transitions, 879 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 09:32:57,906 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 616 flow [2022-11-20 09:32:57,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=616, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2022-11-20 09:32:57,907 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 19 predicate places. [2022-11-20 09:32:57,908 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 616 flow [2022-11-20 09:32:57,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 179.88888888888889) internal successors, (3238), 18 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:57,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:57,910 INFO L209 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] [2022-11-20 09:32:57,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:32:57,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:32:57,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:57,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1204215650, now seen corresponding path program 1 times [2022-11-20 09:32:57,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:57,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338035412] [2022-11-20 09:32:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:57,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:59,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338035412] [2022-11-20 09:32:59,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338035412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:59,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:59,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 09:32:59,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909581758] [2022-11-20 09:32:59,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:59,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 09:32:59,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:59,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 09:32:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:32:59,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-20 09:32:59,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 616 flow. Second operand has 20 states, 20 states have (on average 171.1) internal successors, (3422), 20 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:59,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:59,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-20 09:32:59,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:03,189 INFO L130 PetriNetUnfolder]: 2220/7783 cut-off events. [2022-11-20 09:33:03,190 INFO L131 PetriNetUnfolder]: For 889/896 co-relation queries the response was YES. [2022-11-20 09:33:03,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12410 conditions, 7783 events. 2220/7783 cut-off events. For 889/896 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 72945 event pairs, 175 based on Foata normal form. 86/7089 useless extension candidates. Maximal degree in co-relation 12298. Up to 1746 conditions per place. [2022-11-20 09:33:03,249 INFO L137 encePairwiseOnDemand]: 229/251 looper letters, 208 selfloop transitions, 44 changer transitions 0/409 dead transitions. [2022-11-20 09:33:03,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 409 transitions, 1501 flow [2022-11-20 09:33:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 09:33:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 09:33:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3958 transitions. [2022-11-20 09:33:03,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7167692864904021 [2022-11-20 09:33:03,259 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3958 transitions. [2022-11-20 09:33:03,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3958 transitions. [2022-11-20 09:33:03,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:03,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3958 transitions. [2022-11-20 09:33:03,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 179.9090909090909) internal successors, (3958), 22 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:03,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 251.0) internal successors, (5773), 23 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:03,282 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 251.0) internal successors, (5773), 23 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:03,282 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 616 flow. Second operand 22 states and 3958 transitions. [2022-11-20 09:33:03,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 409 transitions, 1501 flow [2022-11-20 09:33:03,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 409 transitions, 1488 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 09:33:03,298 INFO L231 Difference]: Finished difference. Result has 273 places, 277 transitions, 861 flow [2022-11-20 09:33:03,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=861, PETRI_PLACES=273, PETRI_TRANSITIONS=277} [2022-11-20 09:33:03,299 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 40 predicate places. [2022-11-20 09:33:03,300 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 277 transitions, 861 flow [2022-11-20 09:33:03,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 171.1) internal successors, (3422), 20 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:03,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:03,302 INFO L209 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, 1, 1] [2022-11-20 09:33:03,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:33:03,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:03,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:03,303 INFO L85 PathProgramCache]: Analyzing trace with hash -526008184, now seen corresponding path program 1 times [2022-11-20 09:33:03,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:03,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491332619] [2022-11-20 09:33:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:03,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:03,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491332619] [2022-11-20 09:33:03,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491332619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:03,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:03,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:33:03,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062391198] [2022-11-20 09:33:03,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:03,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:33:03,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:33:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:33:03,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 251 [2022-11-20 09:33:03,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 277 transitions, 861 flow. Second operand has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:03,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:03,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 251 [2022-11-20 09:33:03,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:03,975 INFO L130 PetriNetUnfolder]: 220/3315 cut-off events. [2022-11-20 09:33:03,975 INFO L131 PetriNetUnfolder]: For 227/229 co-relation queries the response was YES. [2022-11-20 09:33:03,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 3315 events. 220/3315 cut-off events. For 227/229 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 29920 event pairs, 15 based on Foata normal form. 0/2895 useless extension candidates. Maximal degree in co-relation 3961. Up to 224 conditions per place. [2022-11-20 09:33:04,011 INFO L137 encePairwiseOnDemand]: 246/251 looper letters, 15 selfloop transitions, 4 changer transitions 0/284 dead transitions. [2022-11-20 09:33:04,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 284 transitions, 915 flow [2022-11-20 09:33:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:33:04,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:33:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 944 transitions. [2022-11-20 09:33:04,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9402390438247012 [2022-11-20 09:33:04,015 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 944 transitions. [2022-11-20 09:33:04,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 944 transitions. [2022-11-20 09:33:04,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:04,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 944 transitions. [2022-11-20 09:33:04,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:04,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:04,025 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:04,026 INFO L175 Difference]: Start difference. First operand has 273 places, 277 transitions, 861 flow. Second operand 4 states and 944 transitions. [2022-11-20 09:33:04,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 284 transitions, 915 flow [2022-11-20 09:33:04,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 284 transitions, 882 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-20 09:33:04,036 INFO L231 Difference]: Finished difference. Result has 270 places, 280 transitions, 856 flow [2022-11-20 09:33:04,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=856, PETRI_PLACES=270, PETRI_TRANSITIONS=280} [2022-11-20 09:33:04,043 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 37 predicate places. [2022-11-20 09:33:04,043 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 280 transitions, 856 flow [2022-11-20 09:33:04,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:04,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:04,044 INFO L209 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, 1, 1, 1] [2022-11-20 09:33:04,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:33:04,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1884600977, now seen corresponding path program 1 times [2022-11-20 09:33:04,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:04,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356390706] [2022-11-20 09:33:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:04,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356390706] [2022-11-20 09:33:04,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356390706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:04,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:04,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:33:04,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919826244] [2022-11-20 09:33:04,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:04,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:33:04,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:33:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:33:04,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 251 [2022-11-20 09:33:04,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 280 transitions, 856 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:04,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:04,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 251 [2022-11-20 09:33:04,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:05,022 INFO L130 PetriNetUnfolder]: 372/4921 cut-off events. [2022-11-20 09:33:05,023 INFO L131 PetriNetUnfolder]: For 323/333 co-relation queries the response was YES. [2022-11-20 09:33:05,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6383 conditions, 4921 events. 372/4921 cut-off events. For 323/333 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 51818 event pairs, 31 based on Foata normal form. 0/4345 useless extension candidates. Maximal degree in co-relation 6298. Up to 486 conditions per place. [2022-11-20 09:33:05,068 INFO L137 encePairwiseOnDemand]: 244/251 looper letters, 21 selfloop transitions, 4 changer transitions 0/290 dead transitions. [2022-11-20 09:33:05,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 290 transitions, 929 flow [2022-11-20 09:33:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:33:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:33:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-11-20 09:33:05,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9306772908366534 [2022-11-20 09:33:05,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-11-20 09:33:05,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-11-20 09:33:05,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:05,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-11-20 09:33:05,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:05,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:05,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:05,079 INFO L175 Difference]: Start difference. First operand has 270 places, 280 transitions, 856 flow. Second operand 5 states and 1168 transitions. [2022-11-20 09:33:05,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 290 transitions, 929 flow [2022-11-20 09:33:05,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 290 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:33:05,145 INFO L231 Difference]: Finished difference. Result has 276 places, 283 transitions, 886 flow [2022-11-20 09:33:05,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=886, PETRI_PLACES=276, PETRI_TRANSITIONS=283} [2022-11-20 09:33:05,146 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 43 predicate places. [2022-11-20 09:33:05,146 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 283 transitions, 886 flow [2022-11-20 09:33:05,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:05,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:05,147 INFO L209 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, 1, 1, 1, 1] [2022-11-20 09:33:05,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:33:05,147 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1942994580, now seen corresponding path program 1 times [2022-11-20 09:33:05,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:05,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103012770] [2022-11-20 09:33:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:05,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:08,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:08,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103012770] [2022-11-20 09:33:08,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103012770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:08,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:08,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 09:33:08,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926981364] [2022-11-20 09:33:08,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:08,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:33:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:33:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:33:08,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 251 [2022-11-20 09:33:08,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 283 transitions, 886 flow. Second operand has 18 states, 18 states have (on average 180.05555555555554) internal successors, (3241), 18 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:08,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:08,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 251 [2022-11-20 09:33:08,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:14,080 INFO L130 PetriNetUnfolder]: 6627/24237 cut-off events. [2022-11-20 09:33:14,080 INFO L131 PetriNetUnfolder]: For 4268/4335 co-relation queries the response was YES. [2022-11-20 09:33:14,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41547 conditions, 24237 events. 6627/24237 cut-off events. For 4268/4335 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 295776 event pairs, 4023 based on Foata normal form. 11/21524 useless extension candidates. Maximal degree in co-relation 41435. Up to 8780 conditions per place. [2022-11-20 09:33:14,264 INFO L137 encePairwiseOnDemand]: 229/251 looper letters, 134 selfloop transitions, 33 changer transitions 0/350 dead transitions. [2022-11-20 09:33:14,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 350 transitions, 1393 flow [2022-11-20 09:33:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:33:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 09:33:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3703 transitions. [2022-11-20 09:33:14,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7376494023904383 [2022-11-20 09:33:14,275 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3703 transitions. [2022-11-20 09:33:14,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3703 transitions. [2022-11-20 09:33:14,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:14,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3703 transitions. [2022-11-20 09:33:14,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 185.15) internal successors, (3703), 20 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:14,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:14,304 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:14,304 INFO L175 Difference]: Start difference. First operand has 276 places, 283 transitions, 886 flow. Second operand 20 states and 3703 transitions. [2022-11-20 09:33:14,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 350 transitions, 1393 flow [2022-11-20 09:33:14,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 350 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:33:14,362 INFO L231 Difference]: Finished difference. Result has 299 places, 293 transitions, 1029 flow [2022-11-20 09:33:14,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1029, PETRI_PLACES=299, PETRI_TRANSITIONS=293} [2022-11-20 09:33:14,365 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 66 predicate places. [2022-11-20 09:33:14,365 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 293 transitions, 1029 flow [2022-11-20 09:33:14,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 180.05555555555554) internal successors, (3241), 18 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:14,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:14,366 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:14,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:33:14,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash -531483381, now seen corresponding path program 1 times [2022-11-20 09:33:14,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516437968] [2022-11-20 09:33:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:14,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:15,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:15,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516437968] [2022-11-20 09:33:15,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516437968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:15,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:15,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 09:33:15,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539388358] [2022-11-20 09:33:15,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:15,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:33:15,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:15,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:33:15,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:33:15,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-20 09:33:15,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 293 transitions, 1029 flow. Second operand has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:15,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:15,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-20 09:33:15,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:22,178 INFO L130 PetriNetUnfolder]: 8302/29747 cut-off events. [2022-11-20 09:33:22,179 INFO L131 PetriNetUnfolder]: For 7574/7694 co-relation queries the response was YES. [2022-11-20 09:33:22,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53820 conditions, 29747 events. 8302/29747 cut-off events. For 7574/7694 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 371618 event pairs, 1594 based on Foata normal form. 299/27840 useless extension candidates. Maximal degree in co-relation 53688. Up to 8324 conditions per place. [2022-11-20 09:33:22,380 INFO L137 encePairwiseOnDemand]: 228/251 looper letters, 215 selfloop transitions, 59 changer transitions 0/450 dead transitions. [2022-11-20 09:33:22,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 450 transitions, 2033 flow [2022-11-20 09:33:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:33:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 09:33:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3783 transitions. [2022-11-20 09:33:22,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7177006260671599 [2022-11-20 09:33:22,394 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3783 transitions. [2022-11-20 09:33:22,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3783 transitions. [2022-11-20 09:33:22,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:22,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3783 transitions. [2022-11-20 09:33:22,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 180.14285714285714) internal successors, (3783), 21 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:22,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 251.0) internal successors, (5522), 22 states have internal predecessors, (5522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:22,415 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 251.0) internal successors, (5522), 22 states have internal predecessors, (5522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:22,416 INFO L175 Difference]: Start difference. First operand has 299 places, 293 transitions, 1029 flow. Second operand 21 states and 3783 transitions. [2022-11-20 09:33:22,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 450 transitions, 2033 flow [2022-11-20 09:33:22,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 450 transitions, 2001 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-20 09:33:22,649 INFO L231 Difference]: Finished difference. Result has 314 places, 317 transitions, 1335 flow [2022-11-20 09:33:22,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1335, PETRI_PLACES=314, PETRI_TRANSITIONS=317} [2022-11-20 09:33:22,651 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 81 predicate places. [2022-11-20 09:33:22,652 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 317 transitions, 1335 flow [2022-11-20 09:33:22,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:22,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:22,653 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:22,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:33:22,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash 324229669, now seen corresponding path program 2 times [2022-11-20 09:33:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:22,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780332258] [2022-11-20 09:33:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:24,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:24,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780332258] [2022-11-20 09:33:24,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780332258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:24,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:24,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 09:33:24,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917409289] [2022-11-20 09:33:24,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:24,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:33:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:33:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:33:24,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-20 09:33:24,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 317 transitions, 1335 flow. Second operand has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:24,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:24,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-20 09:33:24,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:30,728 INFO L130 PetriNetUnfolder]: 8914/31378 cut-off events. [2022-11-20 09:33:30,728 INFO L131 PetriNetUnfolder]: For 16560/16746 co-relation queries the response was YES. [2022-11-20 09:33:30,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60192 conditions, 31378 events. 8914/31378 cut-off events. For 16560/16746 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 392864 event pairs, 1162 based on Foata normal form. 361/29355 useless extension candidates. Maximal degree in co-relation 60052. Up to 6856 conditions per place. [2022-11-20 09:33:30,973 INFO L137 encePairwiseOnDemand]: 230/251 looper letters, 194 selfloop transitions, 64 changer transitions 0/434 dead transitions. [2022-11-20 09:33:30,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 434 transitions, 2170 flow [2022-11-20 09:33:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:33:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 09:33:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3251 transitions. [2022-11-20 09:33:30,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7195661797255423 [2022-11-20 09:33:30,979 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3251 transitions. [2022-11-20 09:33:30,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3251 transitions. [2022-11-20 09:33:30,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:30,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3251 transitions. [2022-11-20 09:33:30,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.61111111111111) internal successors, (3251), 18 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:30,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:30,993 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:30,993 INFO L175 Difference]: Start difference. First operand has 314 places, 317 transitions, 1335 flow. Second operand 18 states and 3251 transitions. [2022-11-20 09:33:30,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 434 transitions, 2170 flow [2022-11-20 09:33:31,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 434 transitions, 2125 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-11-20 09:33:31,489 INFO L231 Difference]: Finished difference. Result has 326 places, 325 transitions, 1548 flow [2022-11-20 09:33:31,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1548, PETRI_PLACES=326, PETRI_TRANSITIONS=325} [2022-11-20 09:33:31,493 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 93 predicate places. [2022-11-20 09:33:31,494 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 325 transitions, 1548 flow [2022-11-20 09:33:31,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:31,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:31,495 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:31,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:33:31,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:31,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash 99264505, now seen corresponding path program 1 times [2022-11-20 09:33:31,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:31,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706626116] [2022-11-20 09:33:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:31,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:31,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706626116] [2022-11-20 09:33:31,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706626116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:31,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:31,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:33:31,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436300716] [2022-11-20 09:33:31,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:31,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:33:31,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:33:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:33:31,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 251 [2022-11-20 09:33:31,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 325 transitions, 1548 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:31,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:31,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 251 [2022-11-20 09:33:31,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:33,112 INFO L130 PetriNetUnfolder]: 465/7417 cut-off events. [2022-11-20 09:33:33,112 INFO L131 PetriNetUnfolder]: For 1975/2365 co-relation queries the response was YES. [2022-11-20 09:33:33,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10234 conditions, 7417 events. 465/7417 cut-off events. For 1975/2365 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 84358 event pairs, 23 based on Foata normal form. 44/6806 useless extension candidates. Maximal degree in co-relation 10168. Up to 227 conditions per place. [2022-11-20 09:33:33,162 INFO L137 encePairwiseOnDemand]: 244/251 looper letters, 21 selfloop transitions, 4 changer transitions 0/335 dead transitions. [2022-11-20 09:33:33,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 335 transitions, 1624 flow [2022-11-20 09:33:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:33:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:33:33,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-11-20 09:33:33,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9306772908366534 [2022-11-20 09:33:33,165 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-11-20 09:33:33,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-11-20 09:33:33,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:33,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-11-20 09:33:33,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:33,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:33,173 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:33,174 INFO L175 Difference]: Start difference. First operand has 326 places, 325 transitions, 1548 flow. Second operand 5 states and 1168 transitions. [2022-11-20 09:33:33,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 335 transitions, 1624 flow [2022-11-20 09:33:33,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 335 transitions, 1578 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-20 09:33:33,197 INFO L231 Difference]: Finished difference. Result has 323 places, 328 transitions, 1534 flow [2022-11-20 09:33:33,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1534, PETRI_PLACES=323, PETRI_TRANSITIONS=328} [2022-11-20 09:33:33,199 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 90 predicate places. [2022-11-20 09:33:33,199 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 328 transitions, 1534 flow [2022-11-20 09:33:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:33,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:33,200 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:33,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:33:33,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:33,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash -738274639, now seen corresponding path program 1 times [2022-11-20 09:33:33,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:33,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058993905] [2022-11-20 09:33:33,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:33,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:33,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:33,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058993905] [2022-11-20 09:33:33,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058993905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:33,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:33,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:33:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266902945] [2022-11-20 09:33:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:33,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:33:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:33:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:33:33,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 251 [2022-11-20 09:33:33,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 328 transitions, 1534 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:33,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:33,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 251 [2022-11-20 09:33:33,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:33,451 INFO L130 PetriNetUnfolder]: 49/974 cut-off events. [2022-11-20 09:33:33,451 INFO L131 PetriNetUnfolder]: For 392/393 co-relation queries the response was YES. [2022-11-20 09:33:33,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 974 events. 49/974 cut-off events. For 392/393 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4469 event pairs, 2 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 1505. Up to 22 conditions per place. [2022-11-20 09:33:33,457 INFO L137 encePairwiseOnDemand]: 247/251 looper letters, 7 selfloop transitions, 2 changer transitions 5/295 dead transitions. [2022-11-20 09:33:33,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 295 transitions, 1247 flow [2022-11-20 09:33:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:33:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:33:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2022-11-20 09:33:33,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.949535192563081 [2022-11-20 09:33:33,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2022-11-20 09:33:33,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2022-11-20 09:33:33,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:33,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2022-11-20 09:33:33,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:33,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 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) [2022-11-20 09:33:33,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 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) [2022-11-20 09:33:33,464 INFO L175 Difference]: Start difference. First operand has 323 places, 328 transitions, 1534 flow. Second operand 3 states and 715 transitions. [2022-11-20 09:33:33,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 295 transitions, 1247 flow [2022-11-20 09:33:33,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 295 transitions, 1222 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-20 09:33:33,475 INFO L231 Difference]: Finished difference. Result has 318 places, 289 transitions, 1191 flow [2022-11-20 09:33:33,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1191, PETRI_PLACES=318, PETRI_TRANSITIONS=289} [2022-11-20 09:33:33,476 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 85 predicate places. [2022-11-20 09:33:33,476 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 289 transitions, 1191 flow [2022-11-20 09:33:33,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:33,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:33,477 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:33,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:33:33,478 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:33,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1781137955, now seen corresponding path program 1 times [2022-11-20 09:33:33,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:33,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306089894] [2022-11-20 09:33:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:33,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:34,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:34,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306089894] [2022-11-20 09:33:34,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306089894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:34,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:34,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 09:33:34,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117774440] [2022-11-20 09:33:34,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:34,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:33:34,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:33:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:33:34,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 251 [2022-11-20 09:33:34,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 289 transitions, 1191 flow. Second operand has 17 states, 17 states have (on average 183.64705882352942) internal successors, (3122), 17 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:34,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:34,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 251 [2022-11-20 09:33:34,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:35,754 INFO L130 PetriNetUnfolder]: 331/2018 cut-off events. [2022-11-20 09:33:35,754 INFO L131 PetriNetUnfolder]: For 1029/1034 co-relation queries the response was YES. [2022-11-20 09:33:35,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3831 conditions, 2018 events. 331/2018 cut-off events. For 1029/1034 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12789 event pairs, 237 based on Foata normal form. 3/1899 useless extension candidates. Maximal degree in co-relation 3698. Up to 641 conditions per place. [2022-11-20 09:33:35,767 INFO L137 encePairwiseOnDemand]: 234/251 looper letters, 77 selfloop transitions, 30 changer transitions 0/297 dead transitions. [2022-11-20 09:33:35,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 297 transitions, 1419 flow [2022-11-20 09:33:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:33:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 09:33:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2799 transitions. [2022-11-20 09:33:35,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7434262948207171 [2022-11-20 09:33:35,774 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2799 transitions. [2022-11-20 09:33:35,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2799 transitions. [2022-11-20 09:33:35,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:35,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2799 transitions. [2022-11-20 09:33:35,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 186.6) internal successors, (2799), 15 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:35,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:35,789 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:35,790 INFO L175 Difference]: Start difference. First operand has 318 places, 289 transitions, 1191 flow. Second operand 15 states and 2799 transitions. [2022-11-20 09:33:35,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 297 transitions, 1419 flow [2022-11-20 09:33:35,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 297 transitions, 1415 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:33:35,804 INFO L231 Difference]: Finished difference. Result has 332 places, 292 transitions, 1277 flow [2022-11-20 09:33:35,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1277, PETRI_PLACES=332, PETRI_TRANSITIONS=292} [2022-11-20 09:33:35,805 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 99 predicate places. [2022-11-20 09:33:35,806 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 292 transitions, 1277 flow [2022-11-20 09:33:35,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 183.64705882352942) internal successors, (3122), 17 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:35,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:35,807 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:35,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:33:35,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1319605564, now seen corresponding path program 1 times [2022-11-20 09:33:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417032717] [2022-11-20 09:33:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:37,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:37,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417032717] [2022-11-20 09:33:37,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417032717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:37,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:37,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 09:33:37,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653390454] [2022-11-20 09:33:37,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:37,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:33:37,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:33:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:33:37,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 251 [2022-11-20 09:33:37,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 292 transitions, 1277 flow. Second operand has 19 states, 19 states have (on average 174.78947368421052) internal successors, (3321), 19 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:37,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:37,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 251 [2022-11-20 09:33:37,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:39,201 INFO L130 PetriNetUnfolder]: 317/1976 cut-off events. [2022-11-20 09:33:39,201 INFO L131 PetriNetUnfolder]: For 1113/1118 co-relation queries the response was YES. [2022-11-20 09:33:39,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 1976 events. 317/1976 cut-off events. For 1113/1118 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12496 event pairs, 109 based on Foata normal form. 7/1874 useless extension candidates. Maximal degree in co-relation 3677. Up to 477 conditions per place. [2022-11-20 09:33:39,212 INFO L137 encePairwiseOnDemand]: 235/251 looper letters, 95 selfloop transitions, 26 changer transitions 0/304 dead transitions. [2022-11-20 09:33:39,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 304 transitions, 1536 flow [2022-11-20 09:33:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:33:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 09:33:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2676 transitions. [2022-11-20 09:33:39,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7107569721115538 [2022-11-20 09:33:39,219 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2676 transitions. [2022-11-20 09:33:39,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2676 transitions. [2022-11-20 09:33:39,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:39,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2676 transitions. [2022-11-20 09:33:39,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 178.4) internal successors, (2676), 15 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:39,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:39,235 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:39,235 INFO L175 Difference]: Start difference. First operand has 332 places, 292 transitions, 1277 flow. Second operand 15 states and 2676 transitions. [2022-11-20 09:33:39,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 304 transitions, 1536 flow [2022-11-20 09:33:39,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 304 transitions, 1502 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-20 09:33:39,251 INFO L231 Difference]: Finished difference. Result has 337 places, 292 transitions, 1305 flow [2022-11-20 09:33:39,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1305, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2022-11-20 09:33:39,252 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 104 predicate places. [2022-11-20 09:33:39,252 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 1305 flow [2022-11-20 09:33:39,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 174.78947368421052) internal successors, (3321), 19 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:39,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:39,254 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:33:39,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:33:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1123022933, now seen corresponding path program 1 times [2022-11-20 09:33:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:39,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368932561] [2022-11-20 09:33:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:42,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:42,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368932561] [2022-11-20 09:33:42,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368932561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:42,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707750666] [2022-11-20 09:33:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:42,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:42,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:42,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:42,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:33:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:42,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-20 09:33:42,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:42,894 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:33:42,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 09:33:43,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 09:33:43,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 09:33:43,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 09:33:44,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:44,379 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 09:33:44,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 09:33:44,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:44,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2022-11-20 09:33:45,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 27 [2022-11-20 09:33:45,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:45,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 09:33:45,810 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-20 09:33:45,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 39 [2022-11-20 09:33:45,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 09:33:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:45,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:46,401 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork1_enqueue_#t~post41#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-20 09:33:46,423 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork1_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-20 09:33:46,433 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse2 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (store .cse1 .cse2 (+ (select .cse1 .cse2) 1)))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-20 09:33:46,734 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse3 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse0 (select .cse2 .cse3))) (or (= .cse0 20) (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int))) (or (not (<= v_ArrVal_341 (+ |c_t1Thread1of1ForFork1_enqueue_#t~post38#1| 1))) (< (select (let ((.cse1 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse2 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_341) .cse3 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse1 (+ (* (select .cse1 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647)))))) is different from false [2022-11-20 09:33:46,962 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse4 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse0 (select .cse1 .cse4))) (or (= .cse0 20) (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int))) (let ((.cse2 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (or (< (+ (select .cse1 .cse2) 1) v_ArrVal_341) (< (select (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse1 .cse2 v_ArrVal_341) .cse4 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse3 (+ (* (select .cse3 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647))))))) is different from false [2022-11-20 09:33:47,014 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ (* 4 |c_t1Thread1of1ForFork1_enqueue_#t~mem36#1|) |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_338)) (.cse4 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse1 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse2 (select .cse0 .cse4))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_341) (= .cse2 20) (< (select (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse0 .cse1 v_ArrVal_341) .cse4 (+ .cse2 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse3 (+ |c_~#queue~0.offset| (* (select .cse3 (+ 84 |c_~#queue~0.offset|)) 4)) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647))))) is different from false [2022-11-20 09:33:47,057 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int)) (let ((.cse1 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|))) (or (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse0 .cse1))) (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse2 (store .cse0 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4) |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_338))) (let ((.cse3 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse5 (select .cse2 .cse1))) (or (< (+ (select .cse2 .cse3) 1) v_ArrVal_341) (< (select (let ((.cse4 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse2 .cse3 v_ArrVal_341) .cse1 (+ .cse5 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse4 (+ |c_~#queue~0.offset| (* (select .cse4 (+ 84 |c_~#queue~0.offset|)) 4)) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647) (= .cse5 20)))))))) is different from false [2022-11-20 09:33:47,137 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse5 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_#in~q#1.base|))) (let ((.cse1 (store .cse5 (+ |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset| (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4)) v_ArrVal_338)) (.cse3 (+ |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset| 84))) (let ((.cse2 (+ 88 |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset|)) (.cse4 (select .cse1 .cse3))) (or (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_#in~q#1.base| (store (store .cse1 .cse2 v_ArrVal_341) .cse3 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* 4 (select .cse0 (+ 84 |c_~#queue~0.offset|)))) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647) (< (+ 1 (select .cse1 .cse2)) v_ArrVal_341) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse5 .cse3))) (= .cse4 20)))))) is different from false [2022-11-20 09:33:52,823 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_337 (Array Int Int)) (v_ArrVal_345 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int) (v_ArrVal_336 Int)) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base|) (+ 88 |c_ULTIMATE.start_init_~q#1.offset|) v_ArrVal_336)) |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_337))) (let ((.cse3 (select .cse6 |c_~#queue~0.base|))) (let ((.cse1 (store .cse3 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4) |c_~#queue~0.offset|) v_ArrVal_338)) (.cse4 (+ 84 |c_~#queue~0.offset|))) (let ((.cse0 (select .cse1 .cse4)) (.cse2 (+ 88 |c_~#queue~0.offset|))) (or (not (<= v_ArrVal_336 0)) (= 20 .cse0) (< (+ (select .cse1 .cse2) 1) v_ArrVal_341) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse3 .cse4))) (< (select (let ((.cse5 (select (store (store .cse6 |c_~#queue~0.base| (store (store .cse1 .cse2 v_ArrVal_341) .cse4 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse5 (+ |c_~#queue~0.offset| (* (select .cse5 .cse4) 4)) v_ArrVal_345)) .cse2) 2147483647))))))) is different from false [2022-11-20 09:33:52,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:33:52,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 194 [2022-11-20 09:33:52,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:33:52,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 314 treesize of output 306 [2022-11-20 09:33:52,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 165 [2022-11-20 09:33:52,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 184 [2022-11-20 09:33:52,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 09:33:53,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:33:53,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 207 treesize of output 215 [2022-11-20 09:33:54,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:33:54,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43 [2022-11-20 09:33:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-20 09:33:55,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707750666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:55,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:33:55,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 29] total 79 [2022-11-20 09:33:55,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369923035] [2022-11-20 09:33:55,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:55,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-20 09:33:55,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:55,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-20 09:33:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=4357, Unknown=34, NotChecked=1314, Total=6320 [2022-11-20 09:33:55,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 251 [2022-11-20 09:33:55,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 1305 flow. Second operand has 80 states, 80 states have (on average 160.1375) internal successors, (12811), 80 states have internal predecessors, (12811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:55,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:55,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 251 [2022-11-20 09:33:55,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:34:05,288 INFO L130 PetriNetUnfolder]: 757/3897 cut-off events. [2022-11-20 09:34:05,288 INFO L131 PetriNetUnfolder]: For 2312/2316 co-relation queries the response was YES. [2022-11-20 09:34:05,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 3897 events. 757/3897 cut-off events. For 2312/2316 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 28730 event pairs, 365 based on Foata normal form. 10/3688 useless extension candidates. Maximal degree in co-relation 7585. Up to 754 conditions per place. [2022-11-20 09:34:05,317 INFO L137 encePairwiseOnDemand]: 218/251 looper letters, 190 selfloop transitions, 106 changer transitions 0/447 dead transitions. [2022-11-20 09:34:05,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 447 transitions, 2693 flow [2022-11-20 09:34:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 09:34:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-20 09:34:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8478 transitions. [2022-11-20 09:34:05,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6495556236592093 [2022-11-20 09:34:05,335 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8478 transitions. [2022-11-20 09:34:05,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8478 transitions. [2022-11-20 09:34:05,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:34:05,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8478 transitions. [2022-11-20 09:34:05,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 163.03846153846155) internal successors, (8478), 52 states have internal predecessors, (8478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:05,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 251.0) internal successors, (13303), 53 states have internal predecessors, (13303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:05,383 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 251.0) internal successors, (13303), 53 states have internal predecessors, (13303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:05,383 INFO L175 Difference]: Start difference. First operand has 337 places, 292 transitions, 1305 flow. Second operand 52 states and 8478 transitions. [2022-11-20 09:34:05,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 447 transitions, 2693 flow [2022-11-20 09:34:05,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 447 transitions, 2642 flow, removed 9 selfloop flow, removed 13 redundant places. [2022-11-20 09:34:05,406 INFO L231 Difference]: Finished difference. Result has 396 places, 365 transitions, 2185 flow [2022-11-20 09:34:05,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2185, PETRI_PLACES=396, PETRI_TRANSITIONS=365} [2022-11-20 09:34:05,407 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 163 predicate places. [2022-11-20 09:34:05,407 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 365 transitions, 2185 flow [2022-11-20 09:34:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 160.1375) internal successors, (12811), 80 states have internal predecessors, (12811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:05,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:34:05,411 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:05,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:05,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:34:05,617 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:34:05,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash 453973176, now seen corresponding path program 1 times [2022-11-20 09:34:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:05,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135079069] [2022-11-20 09:34:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:05,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:07,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:07,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135079069] [2022-11-20 09:34:07,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135079069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104313258] [2022-11-20 09:34:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:07,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:07,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:07,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:07,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:34:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:07,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 09:34:07,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:08,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 09:34:08,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 09:34:08,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:08,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 09:34:09,043 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-20 09:34:09,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-20 09:34:09,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 09:34:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:09,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:10,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:34:10,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 42 [2022-11-20 09:34:10,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:34:10,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 60 [2022-11-20 09:34:10,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-20 09:34:10,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-20 09:34:10,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:34:10,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2022-11-20 09:34:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:10,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104313258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:10,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:34:10,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 49 [2022-11-20 09:34:10,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266970866] [2022-11-20 09:34:10,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:10,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 09:34:10,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 09:34:10,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=2190, Unknown=15, NotChecked=0, Total=2450 [2022-11-20 09:34:10,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 251 [2022-11-20 09:34:10,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 365 transitions, 2185 flow. Second operand has 50 states, 50 states have (on average 181.1) internal successors, (9055), 50 states have internal predecessors, (9055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:10,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:34:10,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 251 [2022-11-20 09:34:10,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:34:15,567 INFO L130 PetriNetUnfolder]: 1236/7319 cut-off events. [2022-11-20 09:34:15,567 INFO L131 PetriNetUnfolder]: For 4697/4698 co-relation queries the response was YES. [2022-11-20 09:34:15,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14129 conditions, 7319 events. 1236/7319 cut-off events. For 4697/4698 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 68589 event pairs, 422 based on Foata normal form. 22/6977 useless extension candidates. Maximal degree in co-relation 13964. Up to 1130 conditions per place. [2022-11-20 09:34:15,638 INFO L137 encePairwiseOnDemand]: 227/251 looper letters, 197 selfloop transitions, 125 changer transitions 0/511 dead transitions. [2022-11-20 09:34:15,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 511 transitions, 3636 flow [2022-11-20 09:34:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 09:34:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 09:34:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5002 transitions. [2022-11-20 09:34:15,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7380846982440608 [2022-11-20 09:34:15,648 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5002 transitions. [2022-11-20 09:34:15,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5002 transitions. [2022-11-20 09:34:15,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:34:15,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5002 transitions. [2022-11-20 09:34:15,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 185.25925925925927) internal successors, (5002), 27 states have internal predecessors, (5002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:15,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 251.0) internal successors, (7028), 28 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:15,671 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 251.0) internal successors, (7028), 28 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:15,672 INFO L175 Difference]: Start difference. First operand has 396 places, 365 transitions, 2185 flow. Second operand 27 states and 5002 transitions. [2022-11-20 09:34:15,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 511 transitions, 3636 flow [2022-11-20 09:34:15,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 511 transitions, 3151 flow, removed 203 selfloop flow, removed 20 redundant places. [2022-11-20 09:34:15,725 INFO L231 Difference]: Finished difference. Result has 412 places, 421 transitions, 2609 flow [2022-11-20 09:34:15,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2609, PETRI_PLACES=412, PETRI_TRANSITIONS=421} [2022-11-20 09:34:15,726 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 179 predicate places. [2022-11-20 09:34:15,726 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 421 transitions, 2609 flow [2022-11-20 09:34:15,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 181.1) internal successors, (9055), 50 states have internal predecessors, (9055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:15,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:34:15,729 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:15,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:15,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660e6d6-69b1-48dd-9bbf-c4894b38d9bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:34:15,935 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 09:34:15,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:15,935 INFO L85 PathProgramCache]: Analyzing trace with hash -916173708, now seen corresponding path program 1 times [2022-11-20 09:34:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:15,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524073683] [2022-11-20 09:34:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat