./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8 --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 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 --- 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-2329fc7 [2022-12-13 12:55:02,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:55:02,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:55:02,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:55:02,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:55:02,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:55:02,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:55:02,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:55:02,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:55:02,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:55:02,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:55:02,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:55:02,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:55:02,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:55:02,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:55:02,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:55:02,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:55:02,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:55:02,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:55:02,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:55:02,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:55:02,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:55:02,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:55:02,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:55:02,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:55:02,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:55:02,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:55:02,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:55:02,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:55:02,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:55:02,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:55:02,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:55:02,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:55:02,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:55:02,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:55:02,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:55:02,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:55:02,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:55:02,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:55:02,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:55:02,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:55:02,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:55:02,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:55:02,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:55:02,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:55:02,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:55:02,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:55:02,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:55:02,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:55:02,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:55:02,401 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:55:02,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:55:02,401 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:55:02,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:55:02,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:55:02,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:55:02,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:55:02,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:55:02,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:55:02,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:55:02,403 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:55:02,403 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:55:02,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:55:02,403 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:55:02,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:55:02,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:55:02,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:55:02,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:55:02,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:55:02,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:55:02,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:55:02,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:55:02,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:55:02,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:55:02,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:55:02,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:55:02,405 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:55:02,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:55:02,405 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:55:02,406 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 [2022-12-13 12:55:02,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:55:02,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:55:02,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:55:02,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:55:02,623 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:55:02,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2022-12-13 12:55:05,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:55:05,365 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:55:05,365 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2022-12-13 12:55:05,375 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/data/63c30e613/a44dce1ccd1d489b880a1d8799f3d7d3/FLAGb1f3c9cfc [2022-12-13 12:55:05,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/data/63c30e613/a44dce1ccd1d489b880a1d8799f3d7d3 [2022-12-13 12:55:05,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:55:05,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:55:05,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:55:05,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:55:05,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:55:05,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:55:05" (1/1) ... [2022-12-13 12:55:05,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab41b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:05, skipping insertion in model container [2022-12-13 12:55:05,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:55:05" (1/1) ... [2022-12-13 12:55:05,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:55:05,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:55:06,053 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_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/sv-benchmarks/c/pthread-ext/09_fmaxsym.i[30422,30435] [2022-12-13 12:55:06,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:55:06,070 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:55:06,104 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_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/sv-benchmarks/c/pthread-ext/09_fmaxsym.i[30422,30435] [2022-12-13 12:55:06,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:55:06,138 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:55:06,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06 WrapperNode [2022-12-13 12:55:06,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:55:06,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:55:06,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:55:06,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:55:06,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,176 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 81 [2022-12-13 12:55:06,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:55:06,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:55:06,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:55:06,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:55:06,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:55:06,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:55:06,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:55:06,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:55:06,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (1/1) ... [2022-12-13 12:55:06,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:55:06,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:06,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:55:06,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:55:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 12:55:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:55:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:55:06,263 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:55:06,354 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:55:06,355 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:55:06,507 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:55:06,532 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:55:06,532 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:55:06,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:55:06 BoogieIcfgContainer [2022-12-13 12:55:06,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:55:06,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:55:06,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:55:06,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:55:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:55:05" (1/3) ... [2022-12-13 12:55:06,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d57cb16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:55:06, skipping insertion in model container [2022-12-13 12:55:06,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:06" (2/3) ... [2022-12-13 12:55:06,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d57cb16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:55:06, skipping insertion in model container [2022-12-13 12:55:06,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:55:06" (3/3) ... [2022-12-13 12:55:06,540 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2022-12-13 12:55:06,547 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:55:06,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:55:06,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 12:55:06,557 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:55:06,600 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:55:06,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 177 flow [2022-12-13 12:55:06,659 INFO L130 PetriNetUnfolder]: 7/97 cut-off events. [2022-12-13 12:55:06,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:55:06,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 7/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2022-12-13 12:55:06,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 177 flow [2022-12-13 12:55:06,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 86 transitions, 177 flow [2022-12-13 12:55:06,670 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:55:06,678 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 86 transitions, 177 flow [2022-12-13 12:55:06,680 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 86 transitions, 177 flow [2022-12-13 12:55:06,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 177 flow [2022-12-13 12:55:06,699 INFO L130 PetriNetUnfolder]: 7/97 cut-off events. [2022-12-13 12:55:06,699 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:55:06,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 7/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2022-12-13 12:55:06,700 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2022-12-13 12:55:09,368 INFO L134 LiptonReduction]: Checked pairs total: 1439 [2022-12-13 12:55:09,369 INFO L136 LiptonReduction]: Total number of compositions: 95 [2022-12-13 12:55:09,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:55:09,388 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;@7b01e365, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:55:09,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 12:55:09,392 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2022-12-13 12:55:09,392 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:55:09,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:09,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:09,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 12:55:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:09,397 INFO L85 PathProgramCache]: Analyzing trace with hash 401973862, now seen corresponding path program 1 times [2022-12-13 12:55:09,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:09,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572028096] [2022-12-13 12:55:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:09,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:09,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:09,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572028096] [2022-12-13 12:55:09,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572028096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:09,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:09,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:09,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736725299] [2022-12-13 12:55:09,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:09,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:09,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:09,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:09,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:09,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 181 [2022-12-13 12:55:09,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:09,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 181 [2022-12-13 12:55:09,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:09,705 INFO L130 PetriNetUnfolder]: 11/29 cut-off events. [2022-12-13 12:55:09,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:55:09,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 50. Up to 23 conditions per place. [2022-12-13 12:55:09,706 INFO L137 encePairwiseOnDemand]: 177/181 looper letters, 10 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2022-12-13 12:55:09,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 51 flow [2022-12-13 12:55:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2022-12-13 12:55:09,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.430939226519337 [2022-12-13 12:55:09,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2022-12-13 12:55:09,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2022-12-13 12:55:09,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:09,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2022-12-13 12:55:09,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,725 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 31 flow. Second operand 3 states and 234 transitions. [2022-12-13 12:55:09,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 51 flow [2022-12-13 12:55:09,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 51 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:55:09,728 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 27 flow [2022-12-13 12:55:09,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2022-12-13 12:55:09,732 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-12-13 12:55:09,732 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 27 flow [2022-12-13 12:55:09,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:09,733 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:09,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:55:09,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 12:55:09,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:09,733 INFO L85 PathProgramCache]: Analyzing trace with hash 401973919, now seen corresponding path program 1 times [2022-12-13 12:55:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:09,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187419141] [2022-12-13 12:55:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:09,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:09,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187419141] [2022-12-13 12:55:09,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187419141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:09,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:09,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:09,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918857518] [2022-12-13 12:55:09,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:09,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:09,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:09,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 181 [2022-12-13 12:55:09,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:09,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 181 [2022-12-13 12:55:09,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:09,847 INFO L130 PetriNetUnfolder]: 9/24 cut-off events. [2022-12-13 12:55:09,847 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:55:09,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 24 events. 9/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 44 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 43. Up to 18 conditions per place. [2022-12-13 12:55:09,848 INFO L137 encePairwiseOnDemand]: 179/181 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2022-12-13 12:55:09,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 49 flow [2022-12-13 12:55:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2022-12-13 12:55:09,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42357274401473294 [2022-12-13 12:55:09,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2022-12-13 12:55:09,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2022-12-13 12:55:09,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:09,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2022-12-13 12:55:09,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,854 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 27 flow. Second operand 3 states and 230 transitions. [2022-12-13 12:55:09,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 49 flow [2022-12-13 12:55:09,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:09,855 INFO L231 Difference]: Finished difference. Result has 14 places, 9 transitions, 26 flow [2022-12-13 12:55:09,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2022-12-13 12:55:09,855 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-12-13 12:55:09,856 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 26 flow [2022-12-13 12:55:09,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:09,856 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:09,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:55:09,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 12:55:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:09,857 INFO L85 PathProgramCache]: Analyzing trace with hash 401973983, now seen corresponding path program 1 times [2022-12-13 12:55:09,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:09,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952168645] [2022-12-13 12:55:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:09,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:09,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952168645] [2022-12-13 12:55:09,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952168645] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:09,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:09,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084838744] [2022-12-13 12:55:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:09,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:09,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 181 [2022-12-13 12:55:09,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:09,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:09,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 181 [2022-12-13 12:55:09,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:10,002 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2022-12-13 12:55:10,002 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:55:10,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 19 events. 7/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 36. Up to 13 conditions per place. [2022-12-13 12:55:10,003 INFO L137 encePairwiseOnDemand]: 179/181 looper letters, 8 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2022-12-13 12:55:10,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 46 flow [2022-12-13 12:55:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2022-12-13 12:55:10,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42173112338858193 [2022-12-13 12:55:10,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2022-12-13 12:55:10,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2022-12-13 12:55:10,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:10,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2022-12-13 12:55:10,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:10,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:10,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:10,008 INFO L175 Difference]: Start difference. First operand has 14 places, 9 transitions, 26 flow. Second operand 3 states and 229 transitions. [2022-12-13 12:55:10,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 46 flow [2022-12-13 12:55:10,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 45 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:10,009 INFO L231 Difference]: Finished difference. Result has 14 places, 8 transitions, 25 flow [2022-12-13 12:55:10,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=14, PETRI_TRANSITIONS=8} [2022-12-13 12:55:10,010 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-12-13 12:55:10,010 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 25 flow [2022-12-13 12:55:10,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:10,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:10,010 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 12:55:10,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:55:10,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 12:55:10,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash -423777059, now seen corresponding path program 1 times [2022-12-13 12:55:10,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:10,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285916767] [2022-12-13 12:55:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:10,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:55:10,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:55:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:55:10,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:55:10,045 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:55:10,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-12-13 12:55:10,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-12-13 12:55:10,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-12-13 12:55:10,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-12-13 12:55:10,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-12-13 12:55:10,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-12-13 12:55:10,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-12-13 12:55:10,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-12-13 12:55:10,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-12-13 12:55:10,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:55:10,049 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 12:55:10,052 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:55:10,052 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 12:55:10,068 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:55:10,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 135 transitions, 282 flow [2022-12-13 12:55:10,087 INFO L130 PetriNetUnfolder]: 13/159 cut-off events. [2022-12-13 12:55:10,088 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:55:10,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 159 events. 13/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 274 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 109. Up to 6 conditions per place. [2022-12-13 12:55:10,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 135 transitions, 282 flow [2022-12-13 12:55:10,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 135 transitions, 282 flow [2022-12-13 12:55:10,090 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:55:10,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 135 transitions, 282 flow [2022-12-13 12:55:10,090 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 135 transitions, 282 flow [2022-12-13 12:55:10,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 135 transitions, 282 flow [2022-12-13 12:55:10,105 INFO L130 PetriNetUnfolder]: 13/159 cut-off events. [2022-12-13 12:55:10,105 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:55:10,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 159 events. 13/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 274 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 109. Up to 6 conditions per place. [2022-12-13 12:55:10,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 7392 [2022-12-13 12:55:11,988 INFO L134 LiptonReduction]: Checked pairs total: 11729 [2022-12-13 12:55:11,988 INFO L136 LiptonReduction]: Total number of compositions: 130 [2022-12-13 12:55:11,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:55:11,991 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;@7b01e365, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:55:11,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 12:55:11,993 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 12:55:11,994 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:55:11,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:11,994 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:11,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:55:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash 703676308, now seen corresponding path program 1 times [2022-12-13 12:55:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:11,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474164989] [2022-12-13 12:55:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:12,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474164989] [2022-12-13 12:55:12,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474164989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:12,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:12,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888412587] [2022-12-13 12:55:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:12,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:12,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2022-12-13 12:55:12,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:12,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2022-12-13 12:55:12,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:12,149 INFO L130 PetriNetUnfolder]: 284/517 cut-off events. [2022-12-13 12:55:12,149 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 12:55:12,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 517 events. 284/517 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2801 event pairs, 8 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 874. Up to 412 conditions per place. [2022-12-13 12:55:12,155 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 32 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-12-13 12:55:12,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 169 flow [2022-12-13 12:55:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2022-12-13 12:55:12,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47924528301886793 [2022-12-13 12:55:12,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2022-12-13 12:55:12,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2022-12-13 12:55:12,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:12,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2022-12-13 12:55:12,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,162 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 381 transitions. [2022-12-13 12:55:12,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 169 flow [2022-12-13 12:55:12,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 167 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 12:55:12,163 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 76 flow [2022-12-13 12:55:12,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2022-12-13 12:55:12,164 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2022-12-13 12:55:12,164 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 76 flow [2022-12-13 12:55:12,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:12,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:12,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:55:12,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:55:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash 703676340, now seen corresponding path program 1 times [2022-12-13 12:55:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:12,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396751260] [2022-12-13 12:55:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:12,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:12,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396751260] [2022-12-13 12:55:12,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396751260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:12,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:12,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:12,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738219625] [2022-12-13 12:55:12,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:12,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:12,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:12,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:12,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:12,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2022-12-13 12:55:12,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:12,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2022-12-13 12:55:12,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:12,311 INFO L130 PetriNetUnfolder]: 255/468 cut-off events. [2022-12-13 12:55:12,311 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-12-13 12:55:12,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 468 events. 255/468 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2433 event pairs, 8 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 804. Up to 363 conditions per place. [2022-12-13 12:55:12,314 INFO L137 encePairwiseOnDemand]: 263/265 looper letters, 31 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 12:55:12,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 165 flow [2022-12-13 12:55:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2022-12-13 12:55:12,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47547169811320755 [2022-12-13 12:55:12,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2022-12-13 12:55:12,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2022-12-13 12:55:12,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:12,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2022-12-13 12:55:12,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,320 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 3 states and 378 transitions. [2022-12-13 12:55:12,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 165 flow [2022-12-13 12:55:12,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:12,322 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 75 flow [2022-12-13 12:55:12,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2022-12-13 12:55:12,322 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2022-12-13 12:55:12,323 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 75 flow [2022-12-13 12:55:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:12,323 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:55:12,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:55:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1975562574, now seen corresponding path program 1 times [2022-12-13 12:55:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:12,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297527639] [2022-12-13 12:55:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:55:12,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:12,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297527639] [2022-12-13 12:55:12,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297527639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:12,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:12,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:12,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977761664] [2022-12-13 12:55:12,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:12,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:12,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:12,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:12,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2022-12-13 12:55:12,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:12,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2022-12-13 12:55:12,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:12,479 INFO L130 PetriNetUnfolder]: 251/469 cut-off events. [2022-12-13 12:55:12,479 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-12-13 12:55:12,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 469 events. 251/469 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2281 event pairs, 21 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 744. Up to 336 conditions per place. [2022-12-13 12:55:12,483 INFO L137 encePairwiseOnDemand]: 263/265 looper letters, 29 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-12-13 12:55:12,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 154 flow [2022-12-13 12:55:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2022-12-13 12:55:12,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4729559748427673 [2022-12-13 12:55:12,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2022-12-13 12:55:12,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2022-12-13 12:55:12,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:12,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2022-12-13 12:55:12,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,492 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 75 flow. Second operand 3 states and 376 transitions. [2022-12-13 12:55:12,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 154 flow [2022-12-13 12:55:12,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:12,494 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 74 flow [2022-12-13 12:55:12,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-12-13 12:55:12,495 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2022-12-13 12:55:12,495 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 74 flow [2022-12-13 12:55:12,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:12,496 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:12,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:55:12,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:55:12,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1975562701, now seen corresponding path program 1 times [2022-12-13 12:55:12,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:12,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41989587] [2022-12-13 12:55:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:12,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:55:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:12,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41989587] [2022-12-13 12:55:12,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41989587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:12,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:12,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683284279] [2022-12-13 12:55:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:12,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:12,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:12,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2022-12-13 12:55:12,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:12,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2022-12-13 12:55:12,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:12,625 INFO L130 PetriNetUnfolder]: 227/429 cut-off events. [2022-12-13 12:55:12,625 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-13 12:55:12,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 429 events. 227/429 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2007 event pairs, 21 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 688. Up to 296 conditions per place. [2022-12-13 12:55:12,627 INFO L137 encePairwiseOnDemand]: 263/265 looper letters, 28 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-12-13 12:55:12,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 150 flow [2022-12-13 12:55:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:12,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2022-12-13 12:55:12,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2022-12-13 12:55:12,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2022-12-13 12:55:12,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2022-12-13 12:55:12,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:12,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2022-12-13 12:55:12,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,630 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 74 flow. Second operand 3 states and 375 transitions. [2022-12-13 12:55:12,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 150 flow [2022-12-13 12:55:12,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:12,631 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 73 flow [2022-12-13 12:55:12,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2022-12-13 12:55:12,631 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2022-12-13 12:55:12,631 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 73 flow [2022-12-13 12:55:12,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:12,632 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:12,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:55:12,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:55:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1351483398, now seen corresponding path program 1 times [2022-12-13 12:55:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:12,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963754859] [2022-12-13 12:55:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:12,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:12,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:12,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963754859] [2022-12-13 12:55:12,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963754859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:12,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:12,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:55:12,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612528235] [2022-12-13 12:55:12,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:12,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:55:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:55:12,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:55:12,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 265 [2022-12-13 12:55:12,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:12,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 265 [2022-12-13 12:55:12,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:12,821 INFO L130 PetriNetUnfolder]: 351/650 cut-off events. [2022-12-13 12:55:12,821 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-13 12:55:12,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 650 events. 351/650 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3411 event pairs, 7 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 1146. Up to 282 conditions per place. [2022-12-13 12:55:12,825 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 42 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-12-13 12:55:12,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 53 transitions, 225 flow [2022-12-13 12:55:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:55:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:55:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2022-12-13 12:55:12,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4669811320754717 [2022-12-13 12:55:12,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2022-12-13 12:55:12,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2022-12-13 12:55:12,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:12,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2022-12-13 12:55:12,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,831 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,831 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 73 flow. Second operand 4 states and 495 transitions. [2022-12-13 12:55:12,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 53 transitions, 225 flow [2022-12-13 12:55:12,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:12,833 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 82 flow [2022-12-13 12:55:12,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2022-12-13 12:55:12,834 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2022-12-13 12:55:12,834 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 82 flow [2022-12-13 12:55:12,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:12,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:12,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:55:12,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:55:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1351483399, now seen corresponding path program 1 times [2022-12-13 12:55:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:12,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668172460] [2022-12-13 12:55:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:12,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:12,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:12,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668172460] [2022-12-13 12:55:12,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668172460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:12,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:12,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:55:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60713062] [2022-12-13 12:55:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:12,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:55:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:12,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:55:12,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:55:12,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 265 [2022-12-13 12:55:12,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:12,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:12,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 265 [2022-12-13 12:55:12,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:12,995 INFO L130 PetriNetUnfolder]: 323/603 cut-off events. [2022-12-13 12:55:12,996 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-12-13 12:55:12,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 603 events. 323/603 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3039 event pairs, 151 based on Foata normal form. 18/508 useless extension candidates. Maximal degree in co-relation 662. Up to 312 conditions per place. [2022-12-13 12:55:12,998 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 31 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-13 12:55:12,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 181 flow [2022-12-13 12:55:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:12,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-12-13 12:55:13,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46163522012578617 [2022-12-13 12:55:13,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-12-13 12:55:13,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-12-13 12:55:13,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:13,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-12-13 12:55:13,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:13,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:13,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:13,001 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 82 flow. Second operand 3 states and 367 transitions. [2022-12-13 12:55:13,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 181 flow [2022-12-13 12:55:13,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:13,003 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 89 flow [2022-12-13 12:55:13,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2022-12-13 12:55:13,003 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2022-12-13 12:55:13,003 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 89 flow [2022-12-13 12:55:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:13,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:13,004 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 12:55:13,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:55:13,004 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:55:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash 131911560, now seen corresponding path program 1 times [2022-12-13 12:55:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:13,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569312458] [2022-12-13 12:55:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:55:13,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:55:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:55:13,020 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:55:13,020 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:55:13,020 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 12:55:13,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 12:55:13,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 12:55:13,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 12:55:13,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 12:55:13,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:55:13,022 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:13,022 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:55:13,022 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 12:55:13,043 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:55:13,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 184 transitions, 389 flow [2022-12-13 12:55:13,066 INFO L130 PetriNetUnfolder]: 19/221 cut-off events. [2022-12-13 12:55:13,066 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 12:55:13,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 221 events. 19/221 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 536 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2022-12-13 12:55:13,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 184 transitions, 389 flow [2022-12-13 12:55:13,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 184 transitions, 389 flow [2022-12-13 12:55:13,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:55:13,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 184 transitions, 389 flow [2022-12-13 12:55:13,069 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 184 transitions, 389 flow [2022-12-13 12:55:13,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 184 transitions, 389 flow [2022-12-13 12:55:13,087 INFO L130 PetriNetUnfolder]: 19/221 cut-off events. [2022-12-13 12:55:13,087 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 12:55:13,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 221 events. 19/221 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 536 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2022-12-13 12:55:13,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 18144 [2022-12-13 12:55:15,373 INFO L134 LiptonReduction]: Checked pairs total: 30266 [2022-12-13 12:55:15,374 INFO L136 LiptonReduction]: Total number of compositions: 183 [2022-12-13 12:55:15,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:55:15,375 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;@7b01e365, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:55:15,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 12:55:15,377 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 12:55:15,377 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:55:15,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:15,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:15,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1098023437, now seen corresponding path program 1 times [2022-12-13 12:55:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:15,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671415782] [2022-12-13 12:55:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:15,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:15,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:15,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671415782] [2022-12-13 12:55:15,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671415782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:15,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:15,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:15,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809801486] [2022-12-13 12:55:15,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:15,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:15,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:15,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2022-12-13 12:55:15,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:15,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:15,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2022-12-13 12:55:15,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:15,897 INFO L130 PetriNetUnfolder]: 4094/5987 cut-off events. [2022-12-13 12:55:15,897 INFO L131 PetriNetUnfolder]: For 529/529 co-relation queries the response was YES. [2022-12-13 12:55:15,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11994 conditions, 5987 events. 4094/5987 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 34973 event pairs, 1040 based on Foata normal form. 0/3774 useless extension candidates. Maximal degree in co-relation 4207. Up to 5182 conditions per place. [2022-12-13 12:55:15,947 INFO L137 encePairwiseOnDemand]: 364/367 looper letters, 52 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2022-12-13 12:55:15,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 273 flow [2022-12-13 12:55:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2022-12-13 12:55:15,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4786557674841054 [2022-12-13 12:55:15,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2022-12-13 12:55:15,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2022-12-13 12:55:15,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:15,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2022-12-13 12:55:15,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:15,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:15,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:15,954 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 117 flow. Second operand 3 states and 527 transitions. [2022-12-13 12:55:15,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 273 flow [2022-12-13 12:55:15,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 265 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 12:55:15,956 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 109 flow [2022-12-13 12:55:15,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2022-12-13 12:55:15,956 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2022-12-13 12:55:15,956 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 109 flow [2022-12-13 12:55:15,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:15,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:15,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:15,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:55:15,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1098023580, now seen corresponding path program 1 times [2022-12-13 12:55:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:15,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768133771] [2022-12-13 12:55:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:15,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:15,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:15,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768133771] [2022-12-13 12:55:15,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768133771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:15,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:15,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:15,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630219296] [2022-12-13 12:55:15,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:15,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:15,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:16,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2022-12-13 12:55:16,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:16,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2022-12-13 12:55:16,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:16,402 INFO L130 PetriNetUnfolder]: 3747/5650 cut-off events. [2022-12-13 12:55:16,402 INFO L131 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2022-12-13 12:55:16,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11090 conditions, 5650 events. 3747/5650 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 35806 event pairs, 224 based on Foata normal form. 0/3647 useless extension candidates. Maximal degree in co-relation 10978. Up to 4557 conditions per place. [2022-12-13 12:55:16,429 INFO L137 encePairwiseOnDemand]: 365/367 looper letters, 51 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2022-12-13 12:55:16,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 263 flow [2022-12-13 12:55:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2022-12-13 12:55:16,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47593097184377836 [2022-12-13 12:55:16,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2022-12-13 12:55:16,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2022-12-13 12:55:16,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:16,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2022-12-13 12:55:16,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,433 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 109 flow. Second operand 3 states and 524 transitions. [2022-12-13 12:55:16,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 263 flow [2022-12-13 12:55:16,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:16,434 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 108 flow [2022-12-13 12:55:16,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2022-12-13 12:55:16,435 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2022-12-13 12:55:16,435 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 108 flow [2022-12-13 12:55:16,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:16,435 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:16,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:55:16,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash -591835538, now seen corresponding path program 1 times [2022-12-13 12:55:16,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:16,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522800422] [2022-12-13 12:55:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:16,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:55:16,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:16,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522800422] [2022-12-13 12:55:16,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522800422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:16,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:16,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:16,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592613084] [2022-12-13 12:55:16,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:16,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:16,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:16,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2022-12-13 12:55:16,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:16,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2022-12-13 12:55:16,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:16,866 INFO L130 PetriNetUnfolder]: 3723/5591 cut-off events. [2022-12-13 12:55:16,866 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2022-12-13 12:55:16,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11214 conditions, 5591 events. 3723/5591 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 34548 event pairs, 211 based on Foata normal form. 0/3639 useless extension candidates. Maximal degree in co-relation 9449. Up to 4576 conditions per place. [2022-12-13 12:55:16,890 INFO L137 encePairwiseOnDemand]: 365/367 looper letters, 49 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-12-13 12:55:16,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 252 flow [2022-12-13 12:55:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-12-13 12:55:16,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47411444141689374 [2022-12-13 12:55:16,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-12-13 12:55:16,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-12-13 12:55:16,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:16,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-12-13 12:55:16,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,894 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 108 flow. Second operand 3 states and 522 transitions. [2022-12-13 12:55:16,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 252 flow [2022-12-13 12:55:16,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:16,895 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 107 flow [2022-12-13 12:55:16,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2022-12-13 12:55:16,895 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2022-12-13 12:55:16,895 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 107 flow [2022-12-13 12:55:16,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:16,895 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:16,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:55:16,896 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash -591835442, now seen corresponding path program 1 times [2022-12-13 12:55:16,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:16,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647959758] [2022-12-13 12:55:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:55:16,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:16,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647959758] [2022-12-13 12:55:16,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647959758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:16,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:16,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:16,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431693181] [2022-12-13 12:55:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:16,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:16,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:16,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2022-12-13 12:55:16,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:16,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2022-12-13 12:55:16,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:17,294 INFO L130 PetriNetUnfolder]: 3331/5039 cut-off events. [2022-12-13 12:55:17,295 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2022-12-13 12:55:17,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 5039 events. 3331/5039 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30613 event pairs, 211 based on Foata normal form. 0/3371 useless extension candidates. Maximal degree in co-relation 8602. Up to 4024 conditions per place. [2022-12-13 12:55:17,316 INFO L137 encePairwiseOnDemand]: 365/367 looper letters, 48 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2022-12-13 12:55:17,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 248 flow [2022-12-13 12:55:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-12-13 12:55:17,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4732061762034514 [2022-12-13 12:55:17,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-12-13 12:55:17,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-12-13 12:55:17,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:17,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-12-13 12:55:17,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,321 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 107 flow. Second operand 3 states and 521 transitions. [2022-12-13 12:55:17,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 248 flow [2022-12-13 12:55:17,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:17,323 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 106 flow [2022-12-13 12:55:17,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2022-12-13 12:55:17,324 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2022-12-13 12:55:17,324 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 106 flow [2022-12-13 12:55:17,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:17,324 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:17,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:55:17,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:17,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:17,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1860075969, now seen corresponding path program 1 times [2022-12-13 12:55:17,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:17,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468536537] [2022-12-13 12:55:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:17,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:17,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:17,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468536537] [2022-12-13 12:55:17,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468536537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:17,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:17,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:55:17,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947129513] [2022-12-13 12:55:17,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:17,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:55:17,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:55:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:55:17,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 367 [2022-12-13 12:55:17,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:17,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 367 [2022-12-13 12:55:17,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:17,979 INFO L130 PetriNetUnfolder]: 5411/8245 cut-off events. [2022-12-13 12:55:17,980 INFO L131 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2022-12-13 12:55:17,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16703 conditions, 8245 events. 5411/8245 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 52639 event pairs, 2345 based on Foata normal form. 0/5633 useless extension candidates. Maximal degree in co-relation 8718. Up to 3896 conditions per place. [2022-12-13 12:55:18,015 INFO L137 encePairwiseOnDemand]: 362/367 looper letters, 72 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2022-12-13 12:55:18,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 88 transitions, 372 flow [2022-12-13 12:55:18,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:55:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:55:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 689 transitions. [2022-12-13 12:55:18,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46934604904632155 [2022-12-13 12:55:18,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 689 transitions. [2022-12-13 12:55:18,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 689 transitions. [2022-12-13 12:55:18,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:18,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 689 transitions. [2022-12-13 12:55:18,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,020 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 106 flow. Second operand 4 states and 689 transitions. [2022-12-13 12:55:18,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 88 transitions, 372 flow [2022-12-13 12:55:18,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:18,022 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 128 flow [2022-12-13 12:55:18,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2022-12-13 12:55:18,022 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2022-12-13 12:55:18,023 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 128 flow [2022-12-13 12:55:18,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:18,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:18,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:55:18,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:18,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:18,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1860075968, now seen corresponding path program 1 times [2022-12-13 12:55:18,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:18,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532862306] [2022-12-13 12:55:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:18,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:18,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:18,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532862306] [2022-12-13 12:55:18,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532862306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:18,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:18,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:18,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040711758] [2022-12-13 12:55:18,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:18,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:18,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:18,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2022-12-13 12:55:18,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:18,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2022-12-13 12:55:18,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:18,555 INFO L130 PetriNetUnfolder]: 4497/6639 cut-off events. [2022-12-13 12:55:18,555 INFO L131 PetriNetUnfolder]: For 1479/1479 co-relation queries the response was YES. [2022-12-13 12:55:18,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14968 conditions, 6639 events. 4497/6639 cut-off events. For 1479/1479 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 38633 event pairs, 1187 based on Foata normal form. 324/5265 useless extension candidates. Maximal degree in co-relation 14800. Up to 5722 conditions per place. [2022-12-13 12:55:18,581 INFO L137 encePairwiseOnDemand]: 365/367 looper letters, 49 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-12-13 12:55:18,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 271 flow [2022-12-13 12:55:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-12-13 12:55:18,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4732061762034514 [2022-12-13 12:55:18,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-12-13 12:55:18,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-12-13 12:55:18,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:18,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-12-13 12:55:18,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,587 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 128 flow. Second operand 3 states and 521 transitions. [2022-12-13 12:55:18,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 271 flow [2022-12-13 12:55:18,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:18,589 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 117 flow [2022-12-13 12:55:18,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2022-12-13 12:55:18,590 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2022-12-13 12:55:18,590 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 117 flow [2022-12-13 12:55:18,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:18,590 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:18,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:55:18,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:18,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1512681856, now seen corresponding path program 1 times [2022-12-13 12:55:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:18,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208301419] [2022-12-13 12:55:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:18,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:55:18,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208301419] [2022-12-13 12:55:18,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208301419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:18,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:18,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:18,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130221854] [2022-12-13 12:55:18,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:18,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:18,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:18,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2022-12-13 12:55:18,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:18,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2022-12-13 12:55:18,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:19,174 INFO L130 PetriNetUnfolder]: 4541/6929 cut-off events. [2022-12-13 12:55:19,174 INFO L131 PetriNetUnfolder]: For 1233/1233 co-relation queries the response was YES. [2022-12-13 12:55:19,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15150 conditions, 6929 events. 4541/6929 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 42162 event pairs, 561 based on Foata normal form. 0/5152 useless extension candidates. Maximal degree in co-relation 13176. Up to 5104 conditions per place. [2022-12-13 12:55:19,208 INFO L137 encePairwiseOnDemand]: 365/367 looper letters, 46 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-12-13 12:55:19,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 259 flow [2022-12-13 12:55:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-12-13 12:55:19,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4695731153496821 [2022-12-13 12:55:19,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-12-13 12:55:19,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-12-13 12:55:19,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:19,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-12-13 12:55:19,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,213 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 117 flow. Second operand 3 states and 517 transitions. [2022-12-13 12:55:19,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 259 flow [2022-12-13 12:55:19,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:19,215 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 116 flow [2022-12-13 12:55:19,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2022-12-13 12:55:19,215 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2022-12-13 12:55:19,215 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 116 flow [2022-12-13 12:55:19,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:19,216 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:19,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:55:19,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:19,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1512681651, now seen corresponding path program 1 times [2022-12-13 12:55:19,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:19,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031248323] [2022-12-13 12:55:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:19,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:55:19,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:19,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031248323] [2022-12-13 12:55:19,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031248323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:19,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:19,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:19,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954964526] [2022-12-13 12:55:19,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:19,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:19,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2022-12-13 12:55:19,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:19,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2022-12-13 12:55:19,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:19,744 INFO L130 PetriNetUnfolder]: 4101/6313 cut-off events. [2022-12-13 12:55:19,744 INFO L131 PetriNetUnfolder]: For 962/962 co-relation queries the response was YES. [2022-12-13 12:55:19,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13922 conditions, 6313 events. 4101/6313 cut-off events. For 962/962 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37963 event pairs, 561 based on Foata normal form. 0/4794 useless extension candidates. Maximal degree in co-relation 12112. Up to 4488 conditions per place. [2022-12-13 12:55:19,780 INFO L137 encePairwiseOnDemand]: 365/367 looper letters, 45 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2022-12-13 12:55:19,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 255 flow [2022-12-13 12:55:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2022-12-13 12:55:19,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46866485013623976 [2022-12-13 12:55:19,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2022-12-13 12:55:19,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2022-12-13 12:55:19,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:19,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2022-12-13 12:55:19,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,788 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 116 flow. Second operand 3 states and 516 transitions. [2022-12-13 12:55:19,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 255 flow [2022-12-13 12:55:19,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:19,793 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 115 flow [2022-12-13 12:55:19,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2022-12-13 12:55:19,794 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2022-12-13 12:55:19,794 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 115 flow [2022-12-13 12:55:19,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:19,794 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:19,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:55:19,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:19,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:19,795 INFO L85 PathProgramCache]: Analyzing trace with hash 883180014, now seen corresponding path program 1 times [2022-12-13 12:55:19,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:19,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448126839] [2022-12-13 12:55:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:19,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:55:19,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:19,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448126839] [2022-12-13 12:55:19,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448126839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:19,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:19,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:55:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585523142] [2022-12-13 12:55:19,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:19,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:55:19,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:55:19,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:55:19,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 367 [2022-12-13 12:55:19,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 115 flow. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:19,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 367 [2022-12-13 12:55:19,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:20,607 INFO L130 PetriNetUnfolder]: 6649/9987 cut-off events. [2022-12-13 12:55:20,607 INFO L131 PetriNetUnfolder]: For 1645/1645 co-relation queries the response was YES. [2022-12-13 12:55:20,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22247 conditions, 9987 events. 6649/9987 cut-off events. For 1645/1645 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61982 event pairs, 3019 based on Foata normal form. 0/7678 useless extension candidates. Maximal degree in co-relation 19386. Up to 4822 conditions per place. [2022-12-13 12:55:20,640 INFO L137 encePairwiseOnDemand]: 362/367 looper letters, 67 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2022-12-13 12:55:20,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 379 flow [2022-12-13 12:55:20,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:55:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:55:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 681 transitions. [2022-12-13 12:55:20,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46389645776566757 [2022-12-13 12:55:20,642 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 681 transitions. [2022-12-13 12:55:20,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 681 transitions. [2022-12-13 12:55:20,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:20,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 681 transitions. [2022-12-13 12:55:20,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,645 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,645 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 115 flow. Second operand 4 states and 681 transitions. [2022-12-13 12:55:20,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 379 flow [2022-12-13 12:55:20,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:20,647 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 137 flow [2022-12-13 12:55:20,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2022-12-13 12:55:20,647 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2022-12-13 12:55:20,647 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 137 flow [2022-12-13 12:55:20,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:20,648 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:20,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:55:20,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 883180012, now seen corresponding path program 1 times [2022-12-13 12:55:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:20,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025657850] [2022-12-13 12:55:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:20,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:55:20,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:20,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025657850] [2022-12-13 12:55:20,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025657850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:20,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:20,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:20,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698677347] [2022-12-13 12:55:20,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:20,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:20,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2022-12-13 12:55:20,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:20,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2022-12-13 12:55:20,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:21,409 INFO L130 PetriNetUnfolder]: 5769/8857 cut-off events. [2022-12-13 12:55:21,410 INFO L131 PetriNetUnfolder]: For 1955/1955 co-relation queries the response was YES. [2022-12-13 12:55:21,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20688 conditions, 8857 events. 5769/8857 cut-off events. For 1955/1955 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 57552 event pairs, 267 based on Foata normal form. 396/7691 useless extension candidates. Maximal degree in co-relation 18086. Up to 7018 conditions per place. [2022-12-13 12:55:21,453 INFO L137 encePairwiseOnDemand]: 365/367 looper letters, 46 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-12-13 12:55:21,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 278 flow [2022-12-13 12:55:21,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2022-12-13 12:55:21,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46866485013623976 [2022-12-13 12:55:21,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2022-12-13 12:55:21,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2022-12-13 12:55:21,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:21,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2022-12-13 12:55:21,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,458 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 137 flow. Second operand 3 states and 516 transitions. [2022-12-13 12:55:21,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 278 flow [2022-12-13 12:55:21,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:21,460 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 126 flow [2022-12-13 12:55:21,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2022-12-13 12:55:21,461 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2022-12-13 12:55:21,461 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 126 flow [2022-12-13 12:55:21,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:21,461 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:21,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:55:21,462 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash -800268491, now seen corresponding path program 1 times [2022-12-13 12:55:21,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:21,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325041321] [2022-12-13 12:55:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:21,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:21,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:21,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325041321] [2022-12-13 12:55:21,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325041321] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:21,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968332258] [2022-12-13 12:55:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:21,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:21,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:21,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:21,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:55:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:21,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:55:21,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:21,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:21,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968332258] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:21,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:21,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 12:55:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390020359] [2022-12-13 12:55:21,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:21,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:55:21,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:21,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:55:21,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:55:21,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 367 [2022-12-13 12:55:21,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 154.375) internal successors, (1235), 8 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:21,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 367 [2022-12-13 12:55:21,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:22,560 INFO L130 PetriNetUnfolder]: 6169/9279 cut-off events. [2022-12-13 12:55:22,560 INFO L131 PetriNetUnfolder]: For 2039/2039 co-relation queries the response was YES. [2022-12-13 12:55:22,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21822 conditions, 9279 events. 6169/9279 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 58469 event pairs, 1443 based on Foata normal form. 0/7909 useless extension candidates. Maximal degree in co-relation 20740. Up to 3630 conditions per place. [2022-12-13 12:55:22,593 INFO L137 encePairwiseOnDemand]: 363/367 looper letters, 67 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2022-12-13 12:55:22,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 404 flow [2022-12-13 12:55:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:55:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:55:22,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 677 transitions. [2022-12-13 12:55:22,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4611716621253406 [2022-12-13 12:55:22,595 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 677 transitions. [2022-12-13 12:55:22,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 677 transitions. [2022-12-13 12:55:22,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:22,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 677 transitions. [2022-12-13 12:55:22,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,597 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 126 flow. Second operand 4 states and 677 transitions. [2022-12-13 12:55:22,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 404 flow [2022-12-13 12:55:22,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:22,599 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 136 flow [2022-12-13 12:55:22,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2022-12-13 12:55:22,599 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2022-12-13 12:55:22,599 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 136 flow [2022-12-13 12:55:22,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.375) internal successors, (1235), 8 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:22,600 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 12:55:22,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-13 12:55:22,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:22,801 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:55:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:22,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1999401825, now seen corresponding path program 1 times [2022-12-13 12:55:22,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:22,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826724715] [2022-12-13 12:55:22,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:22,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:55:22,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:55:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:55:22,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:55:22,843 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:55:22,843 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 12:55:22,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 12:55:22,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 12:55:22,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 12:55:22,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 12:55:22,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 12:55:22,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 12:55:22,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 12:55:22,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-13 12:55:22,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-13 12:55:22,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-13 12:55:22,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 12:55:22,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 12:55:22,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 12:55:22,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 12:55:22,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 12:55:22,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 12:55:22,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 12:55:22,845 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:22,846 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:55:22,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 12:55:22,875 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:55:22,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 233 transitions, 498 flow [2022-12-13 12:55:22,914 INFO L130 PetriNetUnfolder]: 25/283 cut-off events. [2022-12-13 12:55:22,914 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 12:55:22,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 283 events. 25/283 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 824 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 229. Up to 10 conditions per place. [2022-12-13 12:55:22,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 233 transitions, 498 flow [2022-12-13 12:55:22,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 233 transitions, 498 flow [2022-12-13 12:55:22,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:55:22,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 233 transitions, 498 flow [2022-12-13 12:55:22,920 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 233 transitions, 498 flow [2022-12-13 12:55:22,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 233 transitions, 498 flow [2022-12-13 12:55:22,957 INFO L130 PetriNetUnfolder]: 25/283 cut-off events. [2022-12-13 12:55:22,957 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 12:55:22,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 283 events. 25/283 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 824 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 229. Up to 10 conditions per place. [2022-12-13 12:55:22,971 INFO L119 LiptonReduction]: Number of co-enabled transitions 33600 [2022-12-13 12:55:25,565 INFO L134 LiptonReduction]: Checked pairs total: 53614 [2022-12-13 12:55:25,566 INFO L136 LiptonReduction]: Total number of compositions: 224 [2022-12-13 12:55:25,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:55:25,567 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;@7b01e365, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:55:25,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 12:55:25,569 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 12:55:25,569 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:55:25,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:25,569 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:25,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:55:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1583363621, now seen corresponding path program 1 times [2022-12-13 12:55:25,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:25,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945239533] [2022-12-13 12:55:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:25,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:25,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:25,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945239533] [2022-12-13 12:55:25,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945239533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:25,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:25,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799948863] [2022-12-13 12:55:25,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:25,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:25,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:25,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 457 [2022-12-13 12:55:25,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:25,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:25,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 457 [2022-12-13 12:55:25,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:29,542 INFO L130 PetriNetUnfolder]: 52466/71221 cut-off events. [2022-12-13 12:55:29,542 INFO L131 PetriNetUnfolder]: For 8148/8148 co-relation queries the response was YES. [2022-12-13 12:55:29,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140883 conditions, 71221 events. 52466/71221 cut-off events. For 8148/8148 co-relation queries the response was YES. Maximal size of possible extension queue 2981. Compared 501013 event pairs, 3464 based on Foata normal form. 0/43567 useless extension candidates. Maximal degree in co-relation 12845. Up to 59776 conditions per place. [2022-12-13 12:55:29,906 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 72 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2022-12-13 12:55:29,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 381 flow [2022-12-13 12:55:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:29,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2022-12-13 12:55:29,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4908825674690007 [2022-12-13 12:55:29,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2022-12-13 12:55:29,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2022-12-13 12:55:29,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:29,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2022-12-13 12:55:29,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:29,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:29,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:29,912 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 156 flow. Second operand 3 states and 673 transitions. [2022-12-13 12:55:29,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 381 flow [2022-12-13 12:55:29,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 363 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-12-13 12:55:29,916 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 142 flow [2022-12-13 12:55:29,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2022-12-13 12:55:29,916 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2022-12-13 12:55:29,916 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 142 flow [2022-12-13 12:55:29,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:29,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:29,917 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:55:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 12:55:29,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:55:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1583363767, now seen corresponding path program 1 times [2022-12-13 12:55:29,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:29,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193424741] [2022-12-13 12:55:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:29,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:29,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193424741] [2022-12-13 12:55:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193424741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:29,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:29,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680456241] [2022-12-13 12:55:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:29,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:29,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 457 [2022-12-13 12:55:29,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:29,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:29,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 457 [2022-12-13 12:55:29,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:33,827 INFO L130 PetriNetUnfolder]: 45717/60588 cut-off events. [2022-12-13 12:55:33,828 INFO L131 PetriNetUnfolder]: For 3805/3805 co-relation queries the response was YES. [2022-12-13 12:55:33,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122623 conditions, 60588 events. 45717/60588 cut-off events. For 3805/3805 co-relation queries the response was YES. Maximal size of possible extension queue 2528. Compared 375862 event pairs, 13346 based on Foata normal form. 0/38099 useless extension candidates. Maximal degree in co-relation 122510. Up to 52509 conditions per place. [2022-12-13 12:55:34,162 INFO L137 encePairwiseOnDemand]: 455/457 looper letters, 71 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2022-12-13 12:55:34,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 361 flow [2022-12-13 12:55:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-12-13 12:55:34,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4886943836615609 [2022-12-13 12:55:34,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-12-13 12:55:34,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-12-13 12:55:34,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:34,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-12-13 12:55:34,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:34,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:34,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:34,173 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 142 flow. Second operand 3 states and 670 transitions. [2022-12-13 12:55:34,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 361 flow [2022-12-13 12:55:34,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:34,178 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 141 flow [2022-12-13 12:55:34,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2022-12-13 12:55:34,179 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2022-12-13 12:55:34,179 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 141 flow [2022-12-13 12:55:34,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:34,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:34,180 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:34,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:55:34,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:55:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash 334279582, now seen corresponding path program 1 times [2022-12-13 12:55:34,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:34,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780587690] [2022-12-13 12:55:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:34,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:55:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:34,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780587690] [2022-12-13 12:55:34,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780587690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:34,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:34,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201112635] [2022-12-13 12:55:34,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:34,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:34,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:34,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:34,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 457 [2022-12-13 12:55:34,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:34,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:34,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 457 [2022-12-13 12:55:34,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:37,614 INFO L130 PetriNetUnfolder]: 45867/61015 cut-off events. [2022-12-13 12:55:37,614 INFO L131 PetriNetUnfolder]: For 3793/3793 co-relation queries the response was YES. [2022-12-13 12:55:37,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124683 conditions, 61015 events. 45867/61015 cut-off events. For 3793/3793 co-relation queries the response was YES. Maximal size of possible extension queue 2542. Compared 385496 event pairs, 9601 based on Foata normal form. 0/38385 useless extension candidates. Maximal degree in co-relation 106182. Up to 53104 conditions per place. [2022-12-13 12:55:37,918 INFO L137 encePairwiseOnDemand]: 455/457 looper letters, 69 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2022-12-13 12:55:37,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 350 flow [2022-12-13 12:55:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2022-12-13 12:55:37,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48723559445660103 [2022-12-13 12:55:37,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2022-12-13 12:55:37,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2022-12-13 12:55:37,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:37,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2022-12-13 12:55:37,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:37,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:37,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:37,926 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 141 flow. Second operand 3 states and 668 transitions. [2022-12-13 12:55:37,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 350 flow [2022-12-13 12:55:37,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:37,930 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 140 flow [2022-12-13 12:55:37,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2022-12-13 12:55:37,931 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2022-12-13 12:55:37,931 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 140 flow [2022-12-13 12:55:37,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:37,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:37,931 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:37,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 12:55:37,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:55:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash 334279708, now seen corresponding path program 1 times [2022-12-13 12:55:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:37,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222776361] [2022-12-13 12:55:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:37,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:55:37,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:37,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222776361] [2022-12-13 12:55:37,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222776361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:37,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:37,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115949692] [2022-12-13 12:55:37,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:37,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:37,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:37,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 457 [2022-12-13 12:55:37,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:37,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:37,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 457 [2022-12-13 12:55:37,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:41,716 INFO L130 PetriNetUnfolder]: 41635/56863 cut-off events. [2022-12-13 12:55:41,716 INFO L131 PetriNetUnfolder]: For 3364/3364 co-relation queries the response was YES. [2022-12-13 12:55:41,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114927 conditions, 56863 events. 41635/56863 cut-off events. For 3364/3364 co-relation queries the response was YES. Maximal size of possible extension queue 2333. Compared 389418 event pairs, 3073 based on Foata normal form. 0/36681 useless extension candidates. Maximal degree in co-relation 97964. Up to 46648 conditions per place. [2022-12-13 12:55:42,001 INFO L137 encePairwiseOnDemand]: 455/457 looper letters, 68 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2022-12-13 12:55:42,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 346 flow [2022-12-13 12:55:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-12-13 12:55:42,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4865061998541211 [2022-12-13 12:55:42,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-12-13 12:55:42,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-12-13 12:55:42,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:42,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-12-13 12:55:42,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:42,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:42,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:42,009 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 140 flow. Second operand 3 states and 667 transitions. [2022-12-13 12:55:42,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 346 flow [2022-12-13 12:55:42,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:42,015 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 139 flow [2022-12-13 12:55:42,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2022-12-13 12:55:42,015 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2022-12-13 12:55:42,015 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 139 flow [2022-12-13 12:55:42,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:42,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:42,016 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:42,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 12:55:42,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:55:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash 954133864, now seen corresponding path program 1 times [2022-12-13 12:55:42,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:42,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852501315] [2022-12-13 12:55:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:42,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:42,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852501315] [2022-12-13 12:55:42,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852501315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:42,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:42,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:55:42,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567245489] [2022-12-13 12:55:42,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:42,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:55:42,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:55:42,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:55:42,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2022-12-13 12:55:42,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:42,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:42,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2022-12-13 12:55:42,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:46,945 INFO L130 PetriNetUnfolder]: 63103/87065 cut-off events. [2022-12-13 12:55:46,945 INFO L131 PetriNetUnfolder]: For 5083/5083 co-relation queries the response was YES. [2022-12-13 12:55:47,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174853 conditions, 87065 events. 63103/87065 cut-off events. For 5083/5083 co-relation queries the response was YES. Maximal size of possible extension queue 3134. Compared 634331 event pairs, 3059 based on Foata normal form. 0/58234 useless extension candidates. Maximal degree in co-relation 174688. Up to 40218 conditions per place. [2022-12-13 12:55:47,459 INFO L137 encePairwiseOnDemand]: 453/457 looper letters, 102 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2022-12-13 12:55:47,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 511 flow [2022-12-13 12:55:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:55:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:55:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 891 transitions. [2022-12-13 12:55:47,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48741794310722103 [2022-12-13 12:55:47,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 891 transitions. [2022-12-13 12:55:47,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 891 transitions. [2022-12-13 12:55:47,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:47,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 891 transitions. [2022-12-13 12:55:47,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 222.75) internal successors, (891), 4 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:47,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:47,465 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:47,466 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 139 flow. Second operand 4 states and 891 transitions. [2022-12-13 12:55:47,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 511 flow [2022-12-13 12:55:47,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:47,470 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 148 flow [2022-12-13 12:55:47,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2022-12-13 12:55:47,470 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2022-12-13 12:55:47,470 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 148 flow [2022-12-13 12:55:47,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:47,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:47,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:47,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 12:55:47,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:55:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:47,471 INFO L85 PathProgramCache]: Analyzing trace with hash 954133863, now seen corresponding path program 1 times [2022-12-13 12:55:47,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:47,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133598702] [2022-12-13 12:55:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:47,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133598702] [2022-12-13 12:55:47,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133598702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:47,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:47,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:55:47,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162219457] [2022-12-13 12:55:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:47,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:55:47,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:47,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:55:47,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:55:47,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 457 [2022-12-13 12:55:47,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:47,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:47,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 457 [2022-12-13 12:55:47,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:52,961 INFO L130 PetriNetUnfolder]: 56685/78135 cut-off events. [2022-12-13 12:55:52,961 INFO L131 PetriNetUnfolder]: For 10711/10711 co-relation queries the response was YES. [2022-12-13 12:55:53,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166483 conditions, 78135 events. 56685/78135 cut-off events. For 10711/10711 co-relation queries the response was YES. Maximal size of possible extension queue 2662. Compared 529888 event pairs, 31273 based on Foata normal form. 1458/57860 useless extension candidates. Maximal degree in co-relation 138658. Up to 45224 conditions per place. [2022-12-13 12:55:53,390 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 71 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2022-12-13 12:55:53,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 377 flow [2022-12-13 12:55:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2022-12-13 12:55:53,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48067104303428154 [2022-12-13 12:55:53,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2022-12-13 12:55:53,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2022-12-13 12:55:53,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:53,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2022-12-13 12:55:53,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:53,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:53,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:53,396 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 148 flow. Second operand 3 states and 659 transitions. [2022-12-13 12:55:53,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 377 flow [2022-12-13 12:55:53,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:53,401 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 155 flow [2022-12-13 12:55:53,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2022-12-13 12:55:53,401 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2022-12-13 12:55:53,401 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 155 flow [2022-12-13 12:55:53,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:53,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:53,402 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:53,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 12:55:53,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:55:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash 7285854, now seen corresponding path program 1 times [2022-12-13 12:55:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:53,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139402364] [2022-12-13 12:55:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:55:53,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:53,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139402364] [2022-12-13 12:55:53,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139402364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:53,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:53,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996626319] [2022-12-13 12:55:53,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:53,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:53,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:53,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:53,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:53,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 457 [2022-12-13 12:55:53,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:53,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:53,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 457 [2022-12-13 12:55:53,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:58,404 INFO L130 PetriNetUnfolder]: 56989/77533 cut-off events. [2022-12-13 12:55:58,404 INFO L131 PetriNetUnfolder]: For 20000/20000 co-relation queries the response was YES. [2022-12-13 12:55:58,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171410 conditions, 77533 events. 56989/77533 cut-off events. For 20000/20000 co-relation queries the response was YES. Maximal size of possible extension queue 2714. Compared 533081 event pairs, 4091 based on Foata normal form. 0/56051 useless extension candidates. Maximal degree in co-relation 151383. Up to 64416 conditions per place. [2022-12-13 12:55:58,903 INFO L137 encePairwiseOnDemand]: 455/457 looper letters, 66 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2022-12-13 12:55:58,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 367 flow [2022-12-13 12:55:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:55:58,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:55:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-12-13 12:55:58,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48358862144420134 [2022-12-13 12:55:58,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-12-13 12:55:58,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-12-13 12:55:58,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:58,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-12-13 12:55:58,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:58,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:58,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:58,908 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 155 flow. Second operand 3 states and 663 transitions. [2022-12-13 12:55:58,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 367 flow [2022-12-13 12:55:58,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:58,912 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 151 flow [2022-12-13 12:55:58,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2022-12-13 12:55:58,912 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2022-12-13 12:55:58,912 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 151 flow [2022-12-13 12:55:58,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:58,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:58,913 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:58,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 12:55:58,913 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:55:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash 7286114, now seen corresponding path program 1 times [2022-12-13 12:55:58,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:58,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929114799] [2022-12-13 12:55:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:58,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:55:58,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:58,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929114799] [2022-12-13 12:55:58,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929114799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:58,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:58,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:55:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265171127] [2022-12-13 12:55:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:55:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:55:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:55:58,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 457 [2022-12-13 12:55:58,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:58,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:58,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 457 [2022-12-13 12:55:58,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:03,082 INFO L130 PetriNetUnfolder]: 50917/69701 cut-off events. [2022-12-13 12:56:03,083 INFO L131 PetriNetUnfolder]: For 13029/13029 co-relation queries the response was YES. [2022-12-13 12:56:03,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152446 conditions, 69701 events. 50917/69701 cut-off events. For 13029/13029 co-relation queries the response was YES. Maximal size of possible extension queue 2443. Compared 476093 event pairs, 4091 based on Foata normal form. 0/51344 useless extension candidates. Maximal degree in co-relation 135686. Up to 56584 conditions per place. [2022-12-13 12:56:03,509 INFO L137 encePairwiseOnDemand]: 455/457 looper letters, 65 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2022-12-13 12:56:03,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 357 flow [2022-12-13 12:56:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:56:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:56:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2022-12-13 12:56:03,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4828592268417214 [2022-12-13 12:56:03,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2022-12-13 12:56:03,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2022-12-13 12:56:03,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:03,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2022-12-13 12:56:03,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:03,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:03,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:03,514 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 151 flow. Second operand 3 states and 662 transitions. [2022-12-13 12:56:03,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 357 flow [2022-12-13 12:56:03,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:56:03,541 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 150 flow [2022-12-13 12:56:03,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-12-13 12:56:03,541 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2022-12-13 12:56:03,541 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 150 flow [2022-12-13 12:56:03,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:03,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:03,542 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:03,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 12:56:03,542 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:56:03,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash 777303817, now seen corresponding path program 1 times [2022-12-13 12:56:03,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:03,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326515830] [2022-12-13 12:56:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:03,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:56:03,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:03,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326515830] [2022-12-13 12:56:03,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326515830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:03,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:03,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:56:03,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892664946] [2022-12-13 12:56:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:03,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:56:03,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:56:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:56:03,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 457 [2022-12-13 12:56:03,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:03,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:03,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 457 [2022-12-13 12:56:03,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:11,058 INFO L130 PetriNetUnfolder]: 81845/111299 cut-off events. [2022-12-13 12:56:11,058 INFO L131 PetriNetUnfolder]: For 21416/21416 co-relation queries the response was YES. [2022-12-13 12:56:11,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246445 conditions, 111299 events. 81845/111299 cut-off events. For 21416/21416 co-relation queries the response was YES. Maximal size of possible extension queue 3521. Compared 761713 event pairs, 39015 based on Foata normal form. 0/83422 useless extension candidates. Maximal degree in co-relation 219372. Up to 55334 conditions per place. [2022-12-13 12:56:11,741 INFO L137 encePairwiseOnDemand]: 452/457 looper letters, 97 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2022-12-13 12:56:11,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 116 transitions, 528 flow [2022-12-13 12:56:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:56:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:56:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 879 transitions. [2022-12-13 12:56:11,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48085339168490154 [2022-12-13 12:56:11,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 879 transitions. [2022-12-13 12:56:11,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 879 transitions. [2022-12-13 12:56:11,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:11,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 879 transitions. [2022-12-13 12:56:11,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:11,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:11,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:11,747 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 150 flow. Second operand 4 states and 879 transitions. [2022-12-13 12:56:11,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 116 transitions, 528 flow [2022-12-13 12:56:11,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:56:11,765 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 172 flow [2022-12-13 12:56:11,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2022-12-13 12:56:11,766 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2022-12-13 12:56:11,766 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 172 flow [2022-12-13 12:56:11,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:11,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:11,766 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 12:56:11,766 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:56:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash 777303819, now seen corresponding path program 1 times [2022-12-13 12:56:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:11,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989461586] [2022-12-13 12:56:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:11,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:56:11,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:11,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989461586] [2022-12-13 12:56:11,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989461586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:11,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:11,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:56:11,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852098388] [2022-12-13 12:56:11,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:11,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:56:11,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:11,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:56:11,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:56:11,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2022-12-13 12:56:11,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:11,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:11,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2022-12-13 12:56:11,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:17,909 INFO L130 PetriNetUnfolder]: 70075/95615 cut-off events. [2022-12-13 12:56:17,909 INFO L131 PetriNetUnfolder]: For 25828/25828 co-relation queries the response was YES. [2022-12-13 12:56:18,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222852 conditions, 95615 events. 70075/95615 cut-off events. For 25828/25828 co-relation queries the response was YES. Maximal size of possible extension queue 3040. Compared 663222 event pairs, 7559 based on Foata normal form. 3564/79503 useless extension candidates. Maximal degree in co-relation 198630. Up to 49170 conditions per place. [2022-12-13 12:56:18,574 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 96 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2022-12-13 12:56:18,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 114 transitions, 531 flow [2022-12-13 12:56:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:56:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:56:18,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 881 transitions. [2022-12-13 12:56:18,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48194748358862144 [2022-12-13 12:56:18,577 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 881 transitions. [2022-12-13 12:56:18,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 881 transitions. [2022-12-13 12:56:18,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:18,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 881 transitions. [2022-12-13 12:56:18,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:18,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:18,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:18,580 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 172 flow. Second operand 4 states and 881 transitions. [2022-12-13 12:56:18,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 114 transitions, 531 flow [2022-12-13 12:56:18,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 114 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:56:18,592 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 163 flow [2022-12-13 12:56:18,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2022-12-13 12:56:18,593 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2022-12-13 12:56:18,593 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 163 flow [2022-12-13 12:56:18,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:18,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:18,593 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:18,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 12:56:18,593 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:56:18,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash 439634729, now seen corresponding path program 1 times [2022-12-13 12:56:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:18,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926272994] [2022-12-13 12:56:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:56:18,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926272994] [2022-12-13 12:56:18,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926272994] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:56:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388722227] [2022-12-13 12:56:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:18,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:56:18,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:56:18,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:56:18,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:56:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:18,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:56:18,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:56:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:56:18,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:56:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:56:18,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388722227] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:56:18,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:56:18,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 12:56:18,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104157645] [2022-12-13 12:56:18,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:56:18,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:56:18,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:56:18,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:56:18,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 457 [2022-12-13 12:56:18,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 163 flow. Second operand has 8 states, 8 states have (on average 196.375) internal successors, (1571), 8 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:18,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:18,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 457 [2022-12-13 12:56:18,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:26,110 INFO L130 PetriNetUnfolder]: 76535/104927 cut-off events. [2022-12-13 12:56:26,110 INFO L131 PetriNetUnfolder]: For 27058/27058 co-relation queries the response was YES. [2022-12-13 12:56:26,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242318 conditions, 104927 events. 76535/104927 cut-off events. For 27058/27058 co-relation queries the response was YES. Maximal size of possible extension queue 3208. Compared 742300 event pairs, 17163 based on Foata normal form. 1784/84957 useless extension candidates. Maximal degree in co-relation 224030. Up to 41294 conditions per place. [2022-12-13 12:56:26,818 INFO L137 encePairwiseOnDemand]: 453/457 looper letters, 97 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2022-12-13 12:56:26,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 555 flow [2022-12-13 12:56:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:56:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:56:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 875 transitions. [2022-12-13 12:56:26,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4786652078774617 [2022-12-13 12:56:26,821 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 875 transitions. [2022-12-13 12:56:26,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 875 transitions. [2022-12-13 12:56:26,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:26,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 875 transitions. [2022-12-13 12:56:26,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:26,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:26,825 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:26,825 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 163 flow. Second operand 4 states and 875 transitions. [2022-12-13 12:56:26,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 555 flow [2022-12-13 12:56:26,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 544 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 12:56:26,831 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 169 flow [2022-12-13 12:56:26,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2022-12-13 12:56:26,831 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2022-12-13 12:56:26,832 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 169 flow [2022-12-13 12:56:26,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.375) internal successors, (1571), 8 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:26,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:26,832 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:26,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 12:56:27,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 12:56:27,033 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:56:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:27,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1960224225, now seen corresponding path program 1 times [2022-12-13 12:56:27,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:27,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411824127] [2022-12-13 12:56:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:27,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:56:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:27,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411824127] [2022-12-13 12:56:27,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411824127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:27,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:27,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:56:27,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058405925] [2022-12-13 12:56:27,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:27,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:56:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:56:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:56:27,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 457 [2022-12-13 12:56:27,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:27,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:27,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 457 [2022-12-13 12:56:27,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:33,869 INFO L130 PetriNetUnfolder]: 75837/104359 cut-off events. [2022-12-13 12:56:33,869 INFO L131 PetriNetUnfolder]: For 41037/41037 co-relation queries the response was YES. [2022-12-13 12:56:34,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252893 conditions, 104359 events. 75837/104359 cut-off events. For 41037/41037 co-relation queries the response was YES. Maximal size of possible extension queue 3170. Compared 725057 event pairs, 10857 based on Foata normal form. 0/83103 useless extension candidates. Maximal degree in co-relation 225183. Up to 78144 conditions per place. [2022-12-13 12:56:34,575 INFO L137 encePairwiseOnDemand]: 455/457 looper letters, 63 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2022-12-13 12:56:34,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 384 flow [2022-12-13 12:56:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:56:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:56:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2022-12-13 12:56:34,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4784828592268417 [2022-12-13 12:56:34,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2022-12-13 12:56:34,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2022-12-13 12:56:34,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:34,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2022-12-13 12:56:34,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:34,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:34,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:34,580 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 169 flow. Second operand 3 states and 656 transitions. [2022-12-13 12:56:34,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 384 flow [2022-12-13 12:56:34,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:56:34,588 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 167 flow [2022-12-13 12:56:34,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2022-12-13 12:56:34,589 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2022-12-13 12:56:34,589 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 167 flow [2022-12-13 12:56:34,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:34,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:34,589 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:34,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 12:56:34,589 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:56:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:34,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1960224001, now seen corresponding path program 1 times [2022-12-13 12:56:34,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:34,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890132885] [2022-12-13 12:56:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:34,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:56:34,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:34,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890132885] [2022-12-13 12:56:34,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890132885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:34,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:34,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:56:34,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11370471] [2022-12-13 12:56:34,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:34,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:56:34,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:56:34,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:56:34,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 457 [2022-12-13 12:56:34,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:34,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:34,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 457 [2022-12-13 12:56:34,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:40,948 INFO L130 PetriNetUnfolder]: 68445/94855 cut-off events. [2022-12-13 12:56:40,949 INFO L131 PetriNetUnfolder]: For 35455/35455 co-relation queries the response was YES. [2022-12-13 12:56:41,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229510 conditions, 94855 events. 68445/94855 cut-off events. For 35455/35455 co-relation queries the response was YES. Maximal size of possible extension queue 2851. Compared 658613 event pairs, 10857 based on Foata normal form. 0/76695 useless extension candidates. Maximal degree in co-relation 205867. Up to 68640 conditions per place. [2022-12-13 12:56:41,589 INFO L137 encePairwiseOnDemand]: 455/457 looper letters, 62 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2022-12-13 12:56:41,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 378 flow [2022-12-13 12:56:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:56:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:56:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2022-12-13 12:56:41,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4777534646243618 [2022-12-13 12:56:41,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2022-12-13 12:56:41,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2022-12-13 12:56:41,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:41,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2022-12-13 12:56:41,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:41,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:41,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:41,593 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 167 flow. Second operand 3 states and 655 transitions. [2022-12-13 12:56:41,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 378 flow [2022-12-13 12:56:41,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:56:41,882 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 166 flow [2022-12-13 12:56:41,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2022-12-13 12:56:41,882 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2022-12-13 12:56:41,882 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 166 flow [2022-12-13 12:56:41,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:41,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:41,883 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:41,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 12:56:41,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:56:41,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:41,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1229674212, now seen corresponding path program 1 times [2022-12-13 12:56:41,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:41,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544456991] [2022-12-13 12:56:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:41,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:56:41,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:41,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544456991] [2022-12-13 12:56:41,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544456991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:41,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:41,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:56:41,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410671965] [2022-12-13 12:56:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:56:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:56:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:56:41,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 457 [2022-12-13 12:56:41,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:41,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:41,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 457 [2022-12-13 12:56:41,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:52,546 INFO L130 PetriNetUnfolder]: 110945/150955 cut-off events. [2022-12-13 12:56:52,546 INFO L131 PetriNetUnfolder]: For 58645/58645 co-relation queries the response was YES. [2022-12-13 12:56:53,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368152 conditions, 150955 events. 110945/150955 cut-off events. For 58645/58645 co-relation queries the response was YES. Maximal size of possible extension queue 4277. Compared 1054289 event pairs, 51727 based on Foata normal form. 0/123257 useless extension candidates. Maximal degree in co-relation 330244. Up to 74764 conditions per place. [2022-12-13 12:56:53,585 INFO L137 encePairwiseOnDemand]: 452/457 looper letters, 92 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2022-12-13 12:56:53,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 556 flow [2022-12-13 12:56:53,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:56:53,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:56:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 868 transitions. [2022-12-13 12:56:53,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.474835886214442 [2022-12-13 12:56:53,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 868 transitions. [2022-12-13 12:56:53,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 868 transitions. [2022-12-13 12:56:53,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:53,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 868 transitions. [2022-12-13 12:56:53,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:53,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:53,591 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:53,591 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 166 flow. Second operand 4 states and 868 transitions. [2022-12-13 12:56:53,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 556 flow [2022-12-13 12:56:53,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 110 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:56:53,774 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 188 flow [2022-12-13 12:56:53,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2022-12-13 12:56:53,774 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2022-12-13 12:56:53,774 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 188 flow [2022-12-13 12:56:53,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:53,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:53,775 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 12:56:53,775 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:56:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1229674214, now seen corresponding path program 1 times [2022-12-13 12:56:53,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:53,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113763090] [2022-12-13 12:56:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:56:53,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:53,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113763090] [2022-12-13 12:56:53,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113763090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:53,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:53,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:56:53,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054846990] [2022-12-13 12:56:53,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:53,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:56:53,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:53,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:56:53,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:56:53,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2022-12-13 12:56:53,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:56:53,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:53,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2022-12-13 12:56:53,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:03,727 INFO L130 PetriNetUnfolder]: 95637/132655 cut-off events. [2022-12-13 12:57:03,727 INFO L131 PetriNetUnfolder]: For 56477/56477 co-relation queries the response was YES. [2022-12-13 12:57:04,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334001 conditions, 132655 events. 95637/132655 cut-off events. For 56477/56477 co-relation queries the response was YES. Maximal size of possible extension queue 3782. Compared 964385 event pairs, 5635 based on Foata normal form. 4752/118669 useless extension candidates. Maximal degree in co-relation 300028. Up to 65736 conditions per place. [2022-12-13 12:57:04,693 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 91 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2022-12-13 12:57:04,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 108 transitions, 559 flow [2022-12-13 12:57:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:57:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:57:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 870 transitions. [2022-12-13 12:57:04,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4759299781181619 [2022-12-13 12:57:04,695 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 870 transitions. [2022-12-13 12:57:04,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 870 transitions. [2022-12-13 12:57:04,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:04,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 870 transitions. [2022-12-13 12:57:04,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 217.5) internal successors, (870), 4 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:04,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:04,698 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:04,698 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 188 flow. Second operand 4 states and 870 transitions. [2022-12-13 12:57:04,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 108 transitions, 559 flow [2022-12-13 12:57:04,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 555 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:57:04,764 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 179 flow [2022-12-13 12:57:04,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2022-12-13 12:57:04,764 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2022-12-13 12:57:04,764 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 179 flow [2022-12-13 12:57:04,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:04,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:04,764 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:04,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 12:57:04,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:57:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1461417729, now seen corresponding path program 1 times [2022-12-13 12:57:04,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:04,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589273205] [2022-12-13 12:57:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:04,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:57:04,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:04,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589273205] [2022-12-13 12:57:04,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589273205] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:57:04,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436305242] [2022-12-13 12:57:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:04,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:57:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:57:04,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:57:04,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:57:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:04,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:57:04,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:57:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:57:04,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:57:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:57:04,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436305242] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:57:04,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:57:04,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 12:57:04,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166810314] [2022-12-13 12:57:04,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:57:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:57:04,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:04,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:57:04,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:57:04,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 457 [2022-12-13 12:57:04,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 179 flow. Second operand has 8 states, 8 states have (on average 196.5) internal successors, (1572), 8 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:04,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:04,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 457 [2022-12-13 12:57:04,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:15,549 INFO L130 PetriNetUnfolder]: 104329/144607 cut-off events. [2022-12-13 12:57:15,549 INFO L131 PetriNetUnfolder]: For 66031/66031 co-relation queries the response was YES. [2022-12-13 12:57:16,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362489 conditions, 144607 events. 104329/144607 cut-off events. For 66031/66031 co-relation queries the response was YES. Maximal size of possible extension queue 4043. Compared 1078413 event pairs, 20279 based on Foata normal form. 0/126680 useless extension candidates. Maximal degree in co-relation 325594. Up to 55560 conditions per place. [2022-12-13 12:57:16,581 INFO L137 encePairwiseOnDemand]: 453/457 looper letters, 92 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2022-12-13 12:57:16,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 111 transitions, 587 flow [2022-12-13 12:57:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:57:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:57:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 864 transitions. [2022-12-13 12:57:16,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726477024070022 [2022-12-13 12:57:16,583 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 864 transitions. [2022-12-13 12:57:16,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 864 transitions. [2022-12-13 12:57:16,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:16,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 864 transitions. [2022-12-13 12:57:16,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:16,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:16,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:16,586 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 179 flow. Second operand 4 states and 864 transitions. [2022-12-13 12:57:16,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 111 transitions, 587 flow [2022-12-13 12:57:16,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 111 transitions, 578 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:57:16,621 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 187 flow [2022-12-13 12:57:16,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2022-12-13 12:57:16,622 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2022-12-13 12:57:16,622 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 187 flow [2022-12-13 12:57:16,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.5) internal successors, (1572), 8 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:16,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:16,622 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:16,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 12:57:16,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8156529f-10e1-4abb-8b7c-0d62bcd69f9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 12:57:16,823 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:57:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:16,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1701337224, now seen corresponding path program 1 times [2022-12-13 12:57:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:16,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974216689] [2022-12-13 12:57:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:57:16,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:57:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:57:16,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:57:16,874 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:57:16,874 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 12:57:16,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 12:57:16,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 12:57:16,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 12:57:16,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 12:57:16,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 12:57:16,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 12:57:16,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 12:57:16,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 12:57:16,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 12:57:16,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 12:57:16,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 12:57:16,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 12:57:16,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 12:57:16,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 12:57:16,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 12:57:16,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 12:57:16,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 12:57:16,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 12:57:16,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 12:57:16,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 12:57:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-13 12:57:16,878 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:16,878 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:57:16,878 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 12:57:16,903 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:57:16,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 282 transitions, 609 flow [2022-12-13 12:57:16,957 INFO L130 PetriNetUnfolder]: 31/345 cut-off events. [2022-12-13 12:57:16,957 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 12:57:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 345 events. 31/345 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1101 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 296. Up to 12 conditions per place. [2022-12-13 12:57:16,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 282 transitions, 609 flow [2022-12-13 12:57:16,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 282 transitions, 609 flow [2022-12-13 12:57:16,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:57:16,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 282 transitions, 609 flow [2022-12-13 12:57:16,964 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 282 transitions, 609 flow [2022-12-13 12:57:16,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 282 transitions, 609 flow [2022-12-13 12:57:17,010 INFO L130 PetriNetUnfolder]: 31/345 cut-off events. [2022-12-13 12:57:17,010 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 12:57:17,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 345 events. 31/345 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1101 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 296. Up to 12 conditions per place. [2022-12-13 12:57:17,022 INFO L119 LiptonReduction]: Number of co-enabled transitions 53760 [2022-12-13 12:57:20,043 INFO L134 LiptonReduction]: Checked pairs total: 85782 [2022-12-13 12:57:20,043 INFO L136 LiptonReduction]: Total number of compositions: 271 [2022-12-13 12:57:20,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:57:20,046 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;@7b01e365, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:57:20,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 12:57:20,047 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 12:57:20,047 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:57:20,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:20,048 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:57:20,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:57:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2142490740, now seen corresponding path program 1 times [2022-12-13 12:57:20,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:20,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126456836] [2022-12-13 12:57:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:20,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:57:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:20,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126456836] [2022-12-13 12:57:20,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126456836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:20,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:20,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:57:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063246274] [2022-12-13 12:57:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:20,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 553 [2022-12-13 12:57:20,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:20,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:20,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 553 [2022-12-13 12:57:20,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:06,045 INFO L130 PetriNetUnfolder]: 593396/738877 cut-off events. [2022-12-13 12:58:06,045 INFO L131 PetriNetUnfolder]: For 111540/111540 co-relation queries the response was YES. [2022-12-13 12:58:07,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506589 conditions, 738877 events. 593396/738877 cut-off events. For 111540/111540 co-relation queries the response was YES. Maximal size of possible extension queue 23220. Compared 4783727 event pairs, 185180 based on Foata normal form. 0/444313 useless extension candidates. Maximal degree in co-relation 146504. Up to 656098 conditions per place. [2022-12-13 12:58:11,300 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 92 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2022-12-13 12:58:11,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 493 flow [2022-12-13 12:58:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:58:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:58:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2022-12-13 12:58:11,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4936708860759494 [2022-12-13 12:58:11,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2022-12-13 12:58:11,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2022-12-13 12:58:11,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:11,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2022-12-13 12:58:11,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:11,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:11,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:11,306 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 197 flow. Second operand 3 states and 819 transitions. [2022-12-13 12:58:11,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 493 flow [2022-12-13 12:58:11,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 461 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-12-13 12:58:11,369 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 175 flow [2022-12-13 12:58:11,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2022-12-13 12:58:11,370 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2022-12-13 12:58:11,370 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 175 flow [2022-12-13 12:58:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:11,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:11,370 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:58:11,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-13 12:58:11,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:58:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2142490475, now seen corresponding path program 1 times [2022-12-13 12:58:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:11,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795987019] [2022-12-13 12:58:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:11,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:58:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:11,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795987019] [2022-12-13 12:58:11,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795987019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:11,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:11,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:58:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804889277] [2022-12-13 12:58:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:58:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:58:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:58:11,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 553 [2022-12-13 12:58:11,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:11,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:11,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 553 [2022-12-13 12:58:11,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:51,479 INFO L130 PetriNetUnfolder]: 535269/680544 cut-off events. [2022-12-13 12:58:51,479 INFO L131 PetriNetUnfolder]: For 34297/34297 co-relation queries the response was YES. [2022-12-13 12:58:53,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356902 conditions, 680544 events. 535269/680544 cut-off events. For 34297/34297 co-relation queries the response was YES. Maximal size of possible extension queue 21632. Compared 4798478 event pairs, 70532 based on Foata normal form. 0/417829 useless extension candidates. Maximal degree in co-relation 1356788. Up to 575931 conditions per place. [2022-12-13 12:58:56,243 INFO L137 encePairwiseOnDemand]: 551/553 looper letters, 91 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2022-12-13 12:58:56,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 459 flow [2022-12-13 12:58:56,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:58:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:58:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-12-13 12:58:56,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4918625678119349 [2022-12-13 12:58:56,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-12-13 12:58:56,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-12-13 12:58:56,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:56,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-12-13 12:58:56,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:56,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:56,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:56,249 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 175 flow. Second operand 3 states and 816 transitions. [2022-12-13 12:58:56,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 459 flow [2022-12-13 12:58:56,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 114 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:58:56,257 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 174 flow [2022-12-13 12:58:56,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2022-12-13 12:58:56,257 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2022-12-13 12:58:56,257 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 174 flow [2022-12-13 12:58:56,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:56,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:56,258 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:58:56,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-13 12:58:56,258 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:58:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1485103672, now seen corresponding path program 1 times [2022-12-13 12:58:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:56,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702433248] [2022-12-13 12:58:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:56,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:58:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702433248] [2022-12-13 12:58:56,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702433248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:56,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:56,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:58:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857776734] [2022-12-13 12:58:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:56,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:58:56,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:58:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:58:56,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 553 [2022-12-13 12:58:56,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:56,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:56,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 553 [2022-12-13 12:58:56,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand