./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:31:40,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:31:40,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:31:40,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:31:40,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:31:40,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:31:40,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:31:40,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:31:40,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:31:40,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:31:40,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:31:40,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:31:40,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:31:40,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:31:40,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:31:40,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:31:40,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:31:40,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:31:40,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:31:40,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:31:40,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:31:40,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:31:40,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:31:40,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:31:40,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:31:40,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:31:40,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:31:40,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:31:40,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:31:40,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:31:40,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:31:40,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:31:40,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:31:40,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:31:40,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:31:40,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:31:40,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:31:40,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:31:40,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:31:40,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:31:40,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:31:40,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:31:40,340 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:31:40,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:31:40,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:31:40,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:31:40,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:31:40,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:31:40,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:31:40,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:31:40,344 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:31:40,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:31:40,344 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:31:40,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:31:40,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:31:40,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:31:40,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:31:40,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:31:40,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:31:40,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:31:40,346 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:31:40,347 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:31:40,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:31:40,347 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:31:40,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:31:40,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:31:40,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:31:40,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:31:40,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:31:40,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:31:40,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:31:40,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:31:40,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:31:40,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:31:40,351 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:31:40,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:31:40,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:31:40,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2022-11-20 09:31:40,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:31:40,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:31:40,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:31:40,715 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:31:40,715 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:31:40,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-11-20 09:31:43,724 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:31:44,041 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:31:44,042 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-11-20 09:31:44,060 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/data/37f3a7887/446f44a473ed43828f0bdf80f42b1199/FLAGc36b70ecb [2022-11-20 09:31:44,084 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/data/37f3a7887/446f44a473ed43828f0bdf80f42b1199 [2022-11-20 09:31:44,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:31:44,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:31:44,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:31:44,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:31:44,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:31:44,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12763841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44, skipping insertion in model container [2022-11-20 09:31:44,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:31:44,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:31:44,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:31:44,724 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:31:44,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:31:44,829 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:31:44,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44 WrapperNode [2022-11-20 09:31:44,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:31:44,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:31:44,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:31:44,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:31:44,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,877 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-11-20 09:31:44,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:31:44,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:31:44,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:31:44,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:31:44,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,912 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:31:44,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:31:44,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:31:44,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:31:44,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2022-11-20 09:31:44,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:31:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:44,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:31:44,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:31:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:31:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:31:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:31:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:31:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:31:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:31:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 09:31:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 09:31:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:31:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:31:45,020 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:31:45,214 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:31:45,216 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:31:45,524 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:31:45,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:31:45,541 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 09:31:45,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:45 BoogieIcfgContainer [2022-11-20 09:31:45,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:31:45,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:31:45,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:31:45,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:31:45,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:31:44" (1/3) ... [2022-11-20 09:31:45,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337bb2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:45, skipping insertion in model container [2022-11-20 09:31:45,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (2/3) ... [2022-11-20 09:31:45,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337bb2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:45, skipping insertion in model container [2022-11-20 09:31:45,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:45" (3/3) ... [2022-11-20 09:31:45,553 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2022-11-20 09:31:45,563 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:31:45,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:31:45,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 09:31:45,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:31:45,648 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:31:45,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 110 transitions, 225 flow [2022-11-20 09:31:45,745 INFO L130 PetriNetUnfolder]: 6/109 cut-off events. [2022-11-20 09:31:45,745 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:31:45,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 109 events. 6/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-11-20 09:31:45,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 110 transitions, 225 flow [2022-11-20 09:31:45,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 109 transitions, 221 flow [2022-11-20 09:31:45,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:31:45,775 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;@7d3bd99d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:31:45,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 09:31:45,783 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-20 09:31:45,784 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:31:45,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:45,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:45,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:45,791 INFO L85 PathProgramCache]: Analyzing trace with hash -965315634, now seen corresponding path program 1 times [2022-11-20 09:31:45,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:45,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281903662] [2022-11-20 09:31:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:45,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:46,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:46,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281903662] [2022-11-20 09:31:46,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281903662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:46,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:46,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109378246] [2022-11-20 09:31:46,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:46,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:46,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:46,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:46,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-20 09:31:46,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:46,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-20 09:31:46,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:46,384 INFO L130 PetriNetUnfolder]: 3/113 cut-off events. [2022-11-20 09:31:46,384 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 09:31:46,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 113 events. 3/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 78. Up to 14 conditions per place. [2022-11-20 09:31:46,387 INFO L137 encePairwiseOnDemand]: 100/110 looper letters, 16 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2022-11-20 09:31:46,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 269 flow [2022-11-20 09:31:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:31:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2022-11-20 09:31:46,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9036363636363637 [2022-11-20 09:31:46,416 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2022-11-20 09:31:46,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2022-11-20 09:31:46,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:46,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2022-11-20 09:31:46,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,445 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,447 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 221 flow. Second operand 5 states and 497 transitions. [2022-11-20 09:31:46,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 269 flow [2022-11-20 09:31:46,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:31:46,464 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 246 flow [2022-11-20 09:31:46,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2022-11-20 09:31:46,475 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 6 predicate places. [2022-11-20 09:31:46,475 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 246 flow [2022-11-20 09:31:46,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:46,476 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:46,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:31:46,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -852436165, now seen corresponding path program 1 times [2022-11-20 09:31:46,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:46,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509734579] [2022-11-20 09:31:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:46,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:31:46,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:46,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509734579] [2022-11-20 09:31:46,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509734579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:46,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:46,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:46,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731265423] [2022-11-20 09:31:46,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:46,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:46,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:46,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:46,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:46,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-20 09:31:46,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:46,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-20 09:31:46,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:46,674 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-20 09:31:46,675 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:31:46,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 112 events. 3/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 192 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 110. Up to 7 conditions per place. [2022-11-20 09:31:46,683 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 8 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2022-11-20 09:31:46,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 276 flow [2022-11-20 09:31:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:31:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2022-11-20 09:31:46,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-20 09:31:46,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2022-11-20 09:31:46,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2022-11-20 09:31:46,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:46,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2022-11-20 09:31:46,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,691 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,691 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 246 flow. Second operand 5 states and 484 transitions. [2022-11-20 09:31:46,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 276 flow [2022-11-20 09:31:46,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 109 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:31:46,700 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 264 flow [2022-11-20 09:31:46,700 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2022-11-20 09:31:46,701 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2022-11-20 09:31:46,702 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 264 flow [2022-11-20 09:31:46,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:46,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:46,702 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:46,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:31:46,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:46,705 INFO L85 PathProgramCache]: Analyzing trace with hash -655717080, now seen corresponding path program 1 times [2022-11-20 09:31:46,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:46,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990444309] [2022-11-20 09:31:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:46,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:46,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990444309] [2022-11-20 09:31:46,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990444309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:46,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360886348] [2022-11-20 09:31:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:46,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:46,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:46,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:46,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:31:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:47,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:31:47,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:47,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:47,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360886348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:47,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:47,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:31:47,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515546134] [2022-11-20 09:31:47,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:31:47,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:31:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:31:47,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-20 09:31:47,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:47,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-20 09:31:47,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:47,268 INFO L130 PetriNetUnfolder]: 3/111 cut-off events. [2022-11-20 09:31:47,269 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-20 09:31:47,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 111 events. 3/111 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 108. Up to 6 conditions per place. [2022-11-20 09:31:47,276 INFO L137 encePairwiseOnDemand]: 105/110 looper letters, 12 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2022-11-20 09:31:47,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 302 flow [2022-11-20 09:31:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:31:47,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:31:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 677 transitions. [2022-11-20 09:31:47,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792207792207792 [2022-11-20 09:31:47,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 677 transitions. [2022-11-20 09:31:47,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 677 transitions. [2022-11-20 09:31:47,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:47,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 677 transitions. [2022-11-20 09:31:47,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 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) [2022-11-20 09:31:47,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,284 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,285 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 264 flow. Second operand 7 states and 677 transitions. [2022-11-20 09:31:47,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 302 flow [2022-11-20 09:31:47,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:31:47,291 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 260 flow [2022-11-20 09:31:47,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2022-11-20 09:31:47,294 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2022-11-20 09:31:47,294 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 260 flow [2022-11-20 09:31:47,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:47,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:47,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 09:31:47,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:47,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:47,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1921866257, now seen corresponding path program 1 times [2022-11-20 09:31:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:47,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868874254] [2022-11-20 09:31:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:47,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:47,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:47,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868874254] [2022-11-20 09:31:47,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868874254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:47,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228233480] [2022-11-20 09:31:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:47,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:47,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:47,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:31:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:47,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:31:47,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:31:47,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:47,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228233480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:47,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:47,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 09:31:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628932246] [2022-11-20 09:31:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:47,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:31:47,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:47,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:31:47,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:31:47,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 110 [2022-11-20 09:31:47,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:47,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 110 [2022-11-20 09:31:47,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:47,817 INFO L130 PetriNetUnfolder]: 3/135 cut-off events. [2022-11-20 09:31:47,817 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-20 09:31:47,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 135 events. 3/135 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 149 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 136. Up to 10 conditions per place. [2022-11-20 09:31:47,820 INFO L137 encePairwiseOnDemand]: 107/110 looper letters, 11 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-11-20 09:31:47,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 294 flow [2022-11-20 09:31:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:31:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:31:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2022-11-20 09:31:47,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-20 09:31:47,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2022-11-20 09:31:47,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2022-11-20 09:31:47,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:47,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2022-11-20 09:31:47,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,827 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 260 flow. Second operand 3 states and 308 transitions. [2022-11-20 09:31:47,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 294 flow [2022-11-20 09:31:47,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 112 transitions, 283 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 09:31:47,836 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 261 flow [2022-11-20 09:31:47,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2022-11-20 09:31:47,838 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2022-11-20 09:31:47,838 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 261 flow [2022-11-20 09:31:47,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:47,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:47,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:47,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 09:31:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:48,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1806466692, now seen corresponding path program 1 times [2022-11-20 09:31:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:48,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150267971] [2022-11-20 09:31:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:48,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:48,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150267971] [2022-11-20 09:31:48,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150267971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:48,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836773301] [2022-11-20 09:31:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:48,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:48,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:48,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:48,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:31:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:48,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:31:48,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:48,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:48,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836773301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:48,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:31:48,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 09:31:48,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350007663] [2022-11-20 09:31:48,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:48,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:31:48,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:31:48,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:31:48,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-20 09:31:48,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 261 flow. Second operand has 10 states, 10 states have (on average 96.7) internal successors, (967), 10 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:48,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-20 09:31:48,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:48,508 INFO L130 PetriNetUnfolder]: 3/143 cut-off events. [2022-11-20 09:31:48,508 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 09:31:48,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 143 events. 3/143 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2022-11-20 09:31:48,510 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 17 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2022-11-20 09:31:48,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 349 flow [2022-11-20 09:31:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:31:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 09:31:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 874 transitions. [2022-11-20 09:31:48,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8828282828282829 [2022-11-20 09:31:48,513 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 874 transitions. [2022-11-20 09:31:48,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 874 transitions. [2022-11-20 09:31:48,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:48,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 874 transitions. [2022-11-20 09:31:48,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.11111111111111) internal successors, (874), 9 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,520 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,520 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 261 flow. Second operand 9 states and 874 transitions. [2022-11-20 09:31:48,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 349 flow [2022-11-20 09:31:48,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 120 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:31:48,523 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 317 flow [2022-11-20 09:31:48,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=317, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2022-11-20 09:31:48,524 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 20 predicate places. [2022-11-20 09:31:48,525 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 317 flow [2022-11-20 09:31:48,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.7) internal successors, (967), 10 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:48,526 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:48,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:48,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:48,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash 510163484, now seen corresponding path program 2 times [2022-11-20 09:31:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:48,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902942440] [2022-11-20 09:31:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:48,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:48,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902942440] [2022-11-20 09:31:48,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902942440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:48,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051095185] [2022-11-20 09:31:48,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:48,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:48,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:48,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:48,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:31:48,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:48,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:48,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:31:48,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:49,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-20 09:31:49,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:49,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 09:31:49,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-20 09:31:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 09:31:49,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:49,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051095185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:49,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:49,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2022-11-20 09:31:49,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088952955] [2022-11-20 09:31:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:49,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:31:49,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:31:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:31:49,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-20 09:31:49,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 113 transitions, 317 flow. Second operand has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:49,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:49,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-20 09:31:49,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:50,021 INFO L130 PetriNetUnfolder]: 274/1168 cut-off events. [2022-11-20 09:31:50,022 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-20 09:31:50,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 1168 events. 274/1168 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 8131 event pairs, 78 based on Foata normal form. 0/1000 useless extension candidates. Maximal degree in co-relation 1722. Up to 378 conditions per place. [2022-11-20 09:31:50,029 INFO L137 encePairwiseOnDemand]: 99/110 looper letters, 69 selfloop transitions, 15 changer transitions 0/166 dead transitions. [2022-11-20 09:31:50,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 166 transitions, 591 flow [2022-11-20 09:31:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:31:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:31:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 921 transitions. [2022-11-20 09:31:50,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7611570247933884 [2022-11-20 09:31:50,032 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 921 transitions. [2022-11-20 09:31:50,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 921 transitions. [2022-11-20 09:31:50,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:50,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 921 transitions. [2022-11-20 09:31:50,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.72727272727273) internal successors, (921), 11 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:50,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:50,039 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:50,039 INFO L175 Difference]: Start difference. First operand has 127 places, 113 transitions, 317 flow. Second operand 11 states and 921 transitions. [2022-11-20 09:31:50,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 166 transitions, 591 flow [2022-11-20 09:31:50,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 166 transitions, 577 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 09:31:50,044 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 390 flow [2022-11-20 09:31:50,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=390, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2022-11-20 09:31:50,045 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 31 predicate places. [2022-11-20 09:31:50,045 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 390 flow [2022-11-20 09:31:50,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:50,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:50,046 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:50,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:50,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:50,252 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:50,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:50,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1818336817, now seen corresponding path program 1 times [2022-11-20 09:31:50,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:50,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398049627] [2022-11-20 09:31:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:50,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:50,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398049627] [2022-11-20 09:31:50,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398049627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:50,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290186401] [2022-11-20 09:31:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:50,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:50,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:50,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:50,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:31:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:50,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:31:50,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:50,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:50,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290186401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:50,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:31:50,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 09:31:50,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980660227] [2022-11-20 09:31:50,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:50,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:31:50,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:31:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:31:50,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-20 09:31:50,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 390 flow. Second operand has 18 states, 18 states have (on average 97.05555555555556) internal successors, (1747), 18 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:50,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:50,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-20 09:31:50,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:51,026 INFO L130 PetriNetUnfolder]: 24/629 cut-off events. [2022-11-20 09:31:51,027 INFO L131 PetriNetUnfolder]: For 149/153 co-relation queries the response was YES. [2022-11-20 09:31:51,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 629 events. 24/629 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3133 event pairs, 7 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 702. Up to 25 conditions per place. [2022-11-20 09:31:51,032 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 33 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2022-11-20 09:31:51,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 159 transitions, 660 flow [2022-11-20 09:31:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:31:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 09:31:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2032 transitions. [2022-11-20 09:31:51,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8796536796536797 [2022-11-20 09:31:51,038 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2032 transitions. [2022-11-20 09:31:51,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2032 transitions. [2022-11-20 09:31:51,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:51,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2032 transitions. [2022-11-20 09:31:51,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.76190476190476) internal successors, (2032), 21 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:51,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:51,051 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:51,051 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 390 flow. Second operand 21 states and 2032 transitions. [2022-11-20 09:31:51,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 159 transitions, 660 flow [2022-11-20 09:31:51,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 656 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:31:51,057 INFO L231 Difference]: Finished difference. Result has 161 places, 137 transitions, 550 flow [2022-11-20 09:31:51,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=550, PETRI_PLACES=161, PETRI_TRANSITIONS=137} [2022-11-20 09:31:51,057 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 54 predicate places. [2022-11-20 09:31:51,058 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 137 transitions, 550 flow [2022-11-20 09:31:51,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 97.05555555555556) internal successors, (1747), 18 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:51,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:51,059 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:51,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:51,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 09:31:51,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 384223089, now seen corresponding path program 2 times [2022-11-20 09:31:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:51,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859912610] [2022-11-20 09:31:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:51,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:51,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859912610] [2022-11-20 09:31:51,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859912610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:51,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005388109] [2022-11-20 09:31:51,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:51,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:51,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:51,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:51,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:31:51,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:51,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:51,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:31:51,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:51,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-20 09:31:52,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:52,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 09:31:52,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-20 09:31:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-20 09:31:52,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:52,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005388109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:52,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:52,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2022-11-20 09:31:52,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394280142] [2022-11-20 09:31:52,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:52,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:31:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:52,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:31:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:31:52,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-20 09:31:52,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 137 transitions, 550 flow. Second operand has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:52,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-20 09:31:52,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:52,826 INFO L130 PetriNetUnfolder]: 251/1190 cut-off events. [2022-11-20 09:31:52,826 INFO L131 PetriNetUnfolder]: For 411/431 co-relation queries the response was YES. [2022-11-20 09:31:52,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 1190 events. 251/1190 cut-off events. For 411/431 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8063 event pairs, 79 based on Foata normal form. 10/1029 useless extension candidates. Maximal degree in co-relation 2041. Up to 471 conditions per place. [2022-11-20 09:31:52,837 INFO L137 encePairwiseOnDemand]: 97/110 looper letters, 54 selfloop transitions, 17 changer transitions 0/171 dead transitions. [2022-11-20 09:31:52,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 171 transitions, 808 flow [2022-11-20 09:31:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:31:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:31:52,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 824 transitions. [2022-11-20 09:31:52,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7490909090909091 [2022-11-20 09:31:52,840 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 824 transitions. [2022-11-20 09:31:52,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 824 transitions. [2022-11-20 09:31:52,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:52,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 824 transitions. [2022-11-20 09:31:52,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.4) internal successors, (824), 10 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,846 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,847 INFO L175 Difference]: Start difference. First operand has 161 places, 137 transitions, 550 flow. Second operand 10 states and 824 transitions. [2022-11-20 09:31:52,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 171 transitions, 808 flow [2022-11-20 09:31:52,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 171 transitions, 764 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-20 09:31:52,853 INFO L231 Difference]: Finished difference. Result has 168 places, 152 transitions, 619 flow [2022-11-20 09:31:52,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=619, PETRI_PLACES=168, PETRI_TRANSITIONS=152} [2022-11-20 09:31:52,855 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 61 predicate places. [2022-11-20 09:31:52,855 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 152 transitions, 619 flow [2022-11-20 09:31:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:52,856 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:52,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 09:31:53,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:53,061 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:53,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1422313806, now seen corresponding path program 1 times [2022-11-20 09:31:53,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:53,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646980894] [2022-11-20 09:31:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:53,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:53,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:53,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646980894] [2022-11-20 09:31:53,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646980894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:53,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120274997] [2022-11-20 09:31:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:53,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:53,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:53,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:31:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:53,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:31:53,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:53,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:53,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120274997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:53,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:31:53,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 09:31:53,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80469677] [2022-11-20 09:31:53,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:53,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 09:31:53,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:53,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 09:31:53,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:31:53,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-20 09:31:53,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 152 transitions, 619 flow. Second operand has 23 states, 23 states have (on average 97.30434782608695) internal successors, (2238), 23 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:53,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:53,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-20 09:31:53,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:54,380 INFO L130 PetriNetUnfolder]: 49/865 cut-off events. [2022-11-20 09:31:54,380 INFO L131 PetriNetUnfolder]: For 298/299 co-relation queries the response was YES. [2022-11-20 09:31:54,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 865 events. 49/865 cut-off events. For 298/299 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4863 event pairs, 12 based on Foata normal form. 4/747 useless extension candidates. Maximal degree in co-relation 1104. Up to 32 conditions per place. [2022-11-20 09:31:54,389 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 45 selfloop transitions, 30 changer transitions 0/195 dead transitions. [2022-11-20 09:31:54,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 195 transitions, 967 flow [2022-11-20 09:31:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 09:31:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 09:31:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2898 transitions. [2022-11-20 09:31:54,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8781818181818182 [2022-11-20 09:31:54,397 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2898 transitions. [2022-11-20 09:31:54,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2898 transitions. [2022-11-20 09:31:54,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:54,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2898 transitions. [2022-11-20 09:31:54,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 96.6) internal successors, (2898), 30 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:54,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 110.0) internal successors, (3410), 31 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:54,417 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 110.0) internal successors, (3410), 31 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:54,417 INFO L175 Difference]: Start difference. First operand has 168 places, 152 transitions, 619 flow. Second operand 30 states and 2898 transitions. [2022-11-20 09:31:54,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 195 transitions, 967 flow [2022-11-20 09:31:54,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 195 transitions, 963 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:31:54,426 INFO L231 Difference]: Finished difference. Result has 199 places, 162 transitions, 781 flow [2022-11-20 09:31:54,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=781, PETRI_PLACES=199, PETRI_TRANSITIONS=162} [2022-11-20 09:31:54,427 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 92 predicate places. [2022-11-20 09:31:54,427 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 162 transitions, 781 flow [2022-11-20 09:31:54,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.30434782608695) internal successors, (2238), 23 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:54,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:54,429 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:54,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf62f7a-b85a-4f6b-bb1f-3bd7c2cdbc15/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:54,634 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2012827109, now seen corresponding path program 2 times [2022-11-20 09:31:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:54,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206540165] [2022-11-20 09:31:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:54,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:31:55,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:55,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206540165] [2022-11-20 09:31:55,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206540165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:55,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:55,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:31:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858322632] [2022-11-20 09:31:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:55,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:31:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:31:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:31:55,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-20 09:31:55,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 162 transitions, 781 flow. Second operand has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:55,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:55,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-20 09:31:55,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:55,756 INFO L130 PetriNetUnfolder]: 364/1618 cut-off events. [2022-11-20 09:31:55,756 INFO L131 PetriNetUnfolder]: For 1012/1035 co-relation queries the response was YES. [2022-11-20 09:31:55,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 1618 events. 364/1618 cut-off events. For 1012/1035 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11687 event pairs, 120 based on Foata normal form. 14/1415 useless extension candidates. Maximal degree in co-relation 3039. Up to 566 conditions per place. [2022-11-20 09:31:55,772 INFO L137 encePairwiseOnDemand]: 97/110 looper letters, 74 selfloop transitions, 24 changer transitions 0/208 dead transitions. [2022-11-20 09:31:55,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 208 transitions, 1154 flow [2022-11-20 09:31:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:31:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 09:31:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1078 transitions. [2022-11-20 09:31:55,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7538461538461538 [2022-11-20 09:31:55,778 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1078 transitions. [2022-11-20 09:31:55,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1078 transitions. [2022-11-20 09:31:55,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:55,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1078 transitions. [2022-11-20 09:31:55,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.92307692307692) internal successors, (1078), 13 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:55,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:55,787 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:55,787 INFO L175 Difference]: Start difference. First operand has 199 places, 162 transitions, 781 flow. Second operand 13 states and 1078 transitions. [2022-11-20 09:31:55,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 208 transitions, 1154 flow [2022-11-20 09:31:55,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 208 transitions, 1108 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-20 09:31:55,796 INFO L231 Difference]: Finished difference. Result has 196 places, 167 transitions, 838 flow [2022-11-20 09:31:55,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=838, PETRI_PLACES=196, PETRI_TRANSITIONS=167} [2022-11-20 09:31:55,799 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 89 predicate places. [2022-11-20 09:31:55,799 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 167 transitions, 838 flow [2022-11-20 09:31:55,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:55,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:55,800 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:55,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:31:55,801 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash -114159525, now seen corresponding path program 1 times [2022-11-20 09:31:55,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:55,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848429419] [2022-11-20 09:31:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:55,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:31:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:56,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848429419] [2022-11-20 09:31:56,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848429419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:56,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:56,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:31:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435231126] [2022-11-20 09:31:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:56,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:31:56,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:31:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:31:56,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-20 09:31:56,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 167 transitions, 838 flow. Second operand has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:56,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:56,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-20 09:31:56,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:56,794 INFO L130 PetriNetUnfolder]: 310/1426 cut-off events. [2022-11-20 09:31:56,794 INFO L131 PetriNetUnfolder]: For 1210/1274 co-relation queries the response was YES. [2022-11-20 09:31:56,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3220 conditions, 1426 events. 310/1426 cut-off events. For 1210/1274 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10246 event pairs, 30 based on Foata normal form. 15/1270 useless extension candidates. Maximal degree in co-relation 2946. Up to 525 conditions per place. [2022-11-20 09:31:56,809 INFO L137 encePairwiseOnDemand]: 96/110 looper letters, 59 selfloop transitions, 24 changer transitions 0/195 dead transitions. [2022-11-20 09:31:56,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 195 transitions, 1164 flow [2022-11-20 09:31:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:31:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 09:31:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1062 transitions. [2022-11-20 09:31:56,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7426573426573426 [2022-11-20 09:31:56,812 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1062 transitions. [2022-11-20 09:31:56,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1062 transitions. [2022-11-20 09:31:56,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:56,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1062 transitions. [2022-11-20 09:31:56,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.6923076923077) internal successors, (1062), 13 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:56,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:56,819 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:56,819 INFO L175 Difference]: Start difference. First operand has 196 places, 167 transitions, 838 flow. Second operand 13 states and 1062 transitions. [2022-11-20 09:31:56,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 195 transitions, 1164 flow [2022-11-20 09:31:56,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 195 transitions, 1113 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-20 09:31:56,830 INFO L231 Difference]: Finished difference. Result has 203 places, 171 transitions, 903 flow [2022-11-20 09:31:56,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=903, PETRI_PLACES=203, PETRI_TRANSITIONS=171} [2022-11-20 09:31:56,831 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 96 predicate places. [2022-11-20 09:31:56,831 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 171 transitions, 903 flow [2022-11-20 09:31:56,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:56,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:56,834 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:56,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:31:56,834 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -450798860, now seen corresponding path program 1 times [2022-11-20 09:31:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:56,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825896640] [2022-11-20 09:31:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:31:56,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:56,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825896640] [2022-11-20 09:31:56,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825896640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:56,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:56,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:56,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979786964] [2022-11-20 09:31:56,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:56,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:56,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:56,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-20 09:31:56,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 171 transitions, 903 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:56,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:56,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-20 09:31:56,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:57,232 INFO L130 PetriNetUnfolder]: 75/1136 cut-off events. [2022-11-20 09:31:57,233 INFO L131 PetriNetUnfolder]: For 773/789 co-relation queries the response was YES. [2022-11-20 09:31:57,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1136 events. 75/1136 cut-off events. For 773/789 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7419 event pairs, 19 based on Foata normal form. 6/1035 useless extension candidates. Maximal degree in co-relation 1920. Up to 124 conditions per place. [2022-11-20 09:31:57,244 INFO L137 encePairwiseOnDemand]: 103/110 looper letters, 18 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2022-11-20 09:31:57,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 178 transitions, 963 flow [2022-11-20 09:31:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:31:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2022-11-20 09:31:57,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8963636363636364 [2022-11-20 09:31:57,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2022-11-20 09:31:57,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2022-11-20 09:31:57,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:57,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2022-11-20 09:31:57,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,249 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,250 INFO L175 Difference]: Start difference. First operand has 203 places, 171 transitions, 903 flow. Second operand 5 states and 493 transitions. [2022-11-20 09:31:57,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 178 transitions, 963 flow [2022-11-20 09:31:57,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 178 transitions, 946 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 09:31:57,261 INFO L231 Difference]: Finished difference. Result has 204 places, 174 transitions, 918 flow [2022-11-20 09:31:57,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=918, PETRI_PLACES=204, PETRI_TRANSITIONS=174} [2022-11-20 09:31:57,264 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 97 predicate places. [2022-11-20 09:31:57,264 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 174 transitions, 918 flow [2022-11-20 09:31:57,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:57,264 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:57,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:31:57,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:57,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:57,265 INFO L85 PathProgramCache]: Analyzing trace with hash 853234883, now seen corresponding path program 1 times [2022-11-20 09:31:57,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:57,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019185934] [2022-11-20 09:31:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:57,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:31:57,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:57,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019185934] [2022-11-20 09:31:57,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019185934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:57,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:57,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:57,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138376576] [2022-11-20 09:31:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:57,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:57,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:57,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:57,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 110 [2022-11-20 09:31:57,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 174 transitions, 918 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:57,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 110 [2022-11-20 09:31:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:57,680 INFO L130 PetriNetUnfolder]: 75/1119 cut-off events. [2022-11-20 09:31:57,680 INFO L131 PetriNetUnfolder]: For 749/755 co-relation queries the response was YES. [2022-11-20 09:31:57,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1119 events. 75/1119 cut-off events. For 749/755 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7246 event pairs, 19 based on Foata normal form. 3/1070 useless extension candidates. Maximal degree in co-relation 1977. Up to 83 conditions per place. [2022-11-20 09:31:57,692 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 18 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-11-20 09:31:57,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 180 transitions, 976 flow [2022-11-20 09:31:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:31:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 488 transitions. [2022-11-20 09:31:57,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872727272727273 [2022-11-20 09:31:57,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 488 transitions. [2022-11-20 09:31:57,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 488 transitions. [2022-11-20 09:31:57,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:57,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 488 transitions. [2022-11-20 09:31:57,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,698 INFO L175 Difference]: Start difference. First operand has 204 places, 174 transitions, 918 flow. Second operand 5 states and 488 transitions. [2022-11-20 09:31:57,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 180 transitions, 976 flow [2022-11-20 09:31:57,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 180 transitions, 974 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:31:57,711 INFO L231 Difference]: Finished difference. Result has 210 places, 176 transitions, 942 flow [2022-11-20 09:31:57,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=942, PETRI_PLACES=210, PETRI_TRANSITIONS=176} [2022-11-20 09:31:57,713 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 103 predicate places. [2022-11-20 09:31:57,713 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 176 transitions, 942 flow [2022-11-20 09:31:57,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:57,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:57,714 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:31:57,715 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:31:57,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1187987450, now seen corresponding path program 1 times [2022-11-20 09:31:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:57,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117797553] [2022-11-20 09:31:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:31:58,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:58,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117797553] [2022-11-20 09:31:58,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117797553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:58,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:58,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:31:58,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981505654] [2022-11-20 09:31:58,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:58,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:31:58,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:58,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:31:58,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:31:58,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:31:58,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 176 transitions, 942 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:58,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:58,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:31:58,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:00,791 INFO L130 PetriNetUnfolder]: 1689/4988 cut-off events. [2022-11-20 09:32:00,791 INFO L131 PetriNetUnfolder]: For 4801/4823 co-relation queries the response was YES. [2022-11-20 09:32:00,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13102 conditions, 4988 events. 1689/4988 cut-off events. For 4801/4823 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 38970 event pairs, 702 based on Foata normal form. 28/4856 useless extension candidates. Maximal degree in co-relation 12821. Up to 2271 conditions per place. [2022-11-20 09:32:00,850 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 214 selfloop transitions, 54 changer transitions 0/367 dead transitions. [2022-11-20 09:32:00,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 367 transitions, 2356 flow [2022-11-20 09:32:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:32:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 09:32:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1719 transitions. [2022-11-20 09:32:00,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6794466403162055 [2022-11-20 09:32:00,856 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1719 transitions. [2022-11-20 09:32:00,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1719 transitions. [2022-11-20 09:32:00,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:00,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1719 transitions. [2022-11-20 09:32:00,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 74.73913043478261) internal successors, (1719), 23 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:00,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 110.0) internal successors, (2640), 24 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:00,866 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 110.0) internal successors, (2640), 24 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:00,866 INFO L175 Difference]: Start difference. First operand has 210 places, 176 transitions, 942 flow. Second operand 23 states and 1719 transitions. [2022-11-20 09:32:00,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 367 transitions, 2356 flow [2022-11-20 09:32:00,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 367 transitions, 2352 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:32:00,901 INFO L231 Difference]: Finished difference. Result has 243 places, 208 transitions, 1399 flow [2022-11-20 09:32:00,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1399, PETRI_PLACES=243, PETRI_TRANSITIONS=208} [2022-11-20 09:32:00,902 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 136 predicate places. [2022-11-20 09:32:00,902 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 208 transitions, 1399 flow [2022-11-20 09:32:00,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:00,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:00,903 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:00,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:32:00,904 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:00,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:00,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1886310264, now seen corresponding path program 2 times [2022-11-20 09:32:00,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:00,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628858338] [2022-11-20 09:32:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:01,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628858338] [2022-11-20 09:32:01,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628858338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:01,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:01,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678824124] [2022-11-20 09:32:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:01,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:01,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:01,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 208 transitions, 1399 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:01,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:01,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:01,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:04,885 INFO L130 PetriNetUnfolder]: 2013/6075 cut-off events. [2022-11-20 09:32:04,886 INFO L131 PetriNetUnfolder]: For 12757/12766 co-relation queries the response was YES. [2022-11-20 09:32:04,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17848 conditions, 6075 events. 2013/6075 cut-off events. For 12757/12766 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 49232 event pairs, 571 based on Foata normal form. 28/5912 useless extension candidates. Maximal degree in co-relation 17550. Up to 2324 conditions per place. [2022-11-20 09:32:04,965 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 244 selfloop transitions, 93 changer transitions 0/436 dead transitions. [2022-11-20 09:32:04,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 436 transitions, 3404 flow [2022-11-20 09:32:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 09:32:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 09:32:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2267 transitions. [2022-11-20 09:32:04,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6648093841642229 [2022-11-20 09:32:04,973 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2267 transitions. [2022-11-20 09:32:04,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2267 transitions. [2022-11-20 09:32:04,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:04,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2267 transitions. [2022-11-20 09:32:04,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 73.12903225806451) internal successors, (2267), 31 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:04,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:04,990 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:04,990 INFO L175 Difference]: Start difference. First operand has 243 places, 208 transitions, 1399 flow. Second operand 31 states and 2267 transitions. [2022-11-20 09:32:04,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 436 transitions, 3404 flow [2022-11-20 09:32:05,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 436 transitions, 3250 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-11-20 09:32:05,053 INFO L231 Difference]: Finished difference. Result has 284 places, 260 transitions, 2200 flow [2022-11-20 09:32:05,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2200, PETRI_PLACES=284, PETRI_TRANSITIONS=260} [2022-11-20 09:32:05,054 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 177 predicate places. [2022-11-20 09:32:05,055 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 260 transitions, 2200 flow [2022-11-20 09:32:05,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:05,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:05,056 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:05,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:32:05,056 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:05,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1049337056, now seen corresponding path program 3 times [2022-11-20 09:32:05,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:05,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407507406] [2022-11-20 09:32:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:05,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:05,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:05,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407507406] [2022-11-20 09:32:05,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407507406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:05,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:05,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:05,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299930836] [2022-11-20 09:32:05,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:05,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:05,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:05,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:05,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:05,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 260 transitions, 2200 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:05,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:05,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:05,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:09,751 INFO L130 PetriNetUnfolder]: 2479/7029 cut-off events. [2022-11-20 09:32:09,751 INFO L131 PetriNetUnfolder]: For 27777/27799 co-relation queries the response was YES. [2022-11-20 09:32:09,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23871 conditions, 7029 events. 2479/7029 cut-off events. For 27777/27799 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 57805 event pairs, 891 based on Foata normal form. 30/6848 useless extension candidates. Maximal degree in co-relation 23552. Up to 3155 conditions per place. [2022-11-20 09:32:09,886 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 291 selfloop transitions, 103 changer transitions 0/493 dead transitions. [2022-11-20 09:32:09,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 493 transitions, 4571 flow [2022-11-20 09:32:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 09:32:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 09:32:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2145 transitions. [2022-11-20 09:32:09,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2022-11-20 09:32:09,893 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2145 transitions. [2022-11-20 09:32:09,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2145 transitions. [2022-11-20 09:32:09,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:09,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2145 transitions. [2022-11-20 09:32:09,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 73.96551724137932) internal successors, (2145), 29 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:09,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:09,910 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:09,911 INFO L175 Difference]: Start difference. First operand has 284 places, 260 transitions, 2200 flow. Second operand 29 states and 2145 transitions. [2022-11-20 09:32:09,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 493 transitions, 4571 flow [2022-11-20 09:32:10,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 493 transitions, 4350 flow, removed 47 selfloop flow, removed 8 redundant places. [2022-11-20 09:32:10,055 INFO L231 Difference]: Finished difference. Result has 322 places, 307 transitions, 3066 flow [2022-11-20 09:32:10,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3066, PETRI_PLACES=322, PETRI_TRANSITIONS=307} [2022-11-20 09:32:10,056 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 215 predicate places. [2022-11-20 09:32:10,057 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 307 transitions, 3066 flow [2022-11-20 09:32:10,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:10,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:10,058 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:10,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:32:10,058 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:10,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:10,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1624451152, now seen corresponding path program 4 times [2022-11-20 09:32:10,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:10,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416356118] [2022-11-20 09:32:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:10,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:10,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:10,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416356118] [2022-11-20 09:32:10,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416356118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:10,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:10,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:10,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262443308] [2022-11-20 09:32:10,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:10,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:10,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:10,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:10,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:10,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:10,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 307 transitions, 3066 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:10,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:10,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:10,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:15,163 INFO L130 PetriNetUnfolder]: 2864/8306 cut-off events. [2022-11-20 09:32:15,163 INFO L131 PetriNetUnfolder]: For 49179/49188 co-relation queries the response was YES. [2022-11-20 09:32:15,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30442 conditions, 8306 events. 2864/8306 cut-off events. For 49179/49188 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 70741 event pairs, 766 based on Foata normal form. 28/8092 useless extension candidates. Maximal degree in co-relation 30103. Up to 3084 conditions per place. [2022-11-20 09:32:15,262 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 343 selfloop transitions, 153 changer transitions 0/595 dead transitions. [2022-11-20 09:32:15,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 595 transitions, 6391 flow [2022-11-20 09:32:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 09:32:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 09:32:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2585 transitions. [2022-11-20 09:32:15,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2022-11-20 09:32:15,268 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2585 transitions. [2022-11-20 09:32:15,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2585 transitions. [2022-11-20 09:32:15,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:15,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2585 transitions. [2022-11-20 09:32:15,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 73.85714285714286) internal successors, (2585), 35 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,282 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,282 INFO L175 Difference]: Start difference. First operand has 322 places, 307 transitions, 3066 flow. Second operand 35 states and 2585 transitions. [2022-11-20 09:32:15,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 595 transitions, 6391 flow [2022-11-20 09:32:15,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 595 transitions, 6111 flow, removed 108 selfloop flow, removed 6 redundant places. [2022-11-20 09:32:15,540 INFO L231 Difference]: Finished difference. Result has 369 places, 366 transitions, 4375 flow [2022-11-20 09:32:15,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4375, PETRI_PLACES=369, PETRI_TRANSITIONS=366} [2022-11-20 09:32:15,541 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 262 predicate places. [2022-11-20 09:32:15,541 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 366 transitions, 4375 flow [2022-11-20 09:32:15,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:15,542 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:15,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:32:15,543 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:15,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:15,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1297807034, now seen corresponding path program 1 times [2022-11-20 09:32:15,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:15,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656611031] [2022-11-20 09:32:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:16,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:16,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656611031] [2022-11-20 09:32:16,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656611031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:16,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:16,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:16,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340845387] [2022-11-20 09:32:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:16,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:16,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:16,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 366 transitions, 4375 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:16,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:16,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:16,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:20,522 INFO L130 PetriNetUnfolder]: 3238/9353 cut-off events. [2022-11-20 09:32:20,522 INFO L131 PetriNetUnfolder]: For 75199/75199 co-relation queries the response was YES. [2022-11-20 09:32:20,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36686 conditions, 9353 events. 3238/9353 cut-off events. For 75199/75199 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 83284 event pairs, 485 based on Foata normal form. 0/9083 useless extension candidates. Maximal degree in co-relation 36326. Up to 4131 conditions per place. [2022-11-20 09:32:20,692 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 428 selfloop transitions, 174 changer transitions 0/701 dead transitions. [2022-11-20 09:32:20,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 701 transitions, 9136 flow [2022-11-20 09:32:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 09:32:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 09:32:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2294 transitions. [2022-11-20 09:32:20,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2022-11-20 09:32:20,706 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2294 transitions. [2022-11-20 09:32:20,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2294 transitions. [2022-11-20 09:32:20,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:20,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2294 transitions. [2022-11-20 09:32:20,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 74.0) internal successors, (2294), 31 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,727 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,728 INFO L175 Difference]: Start difference. First operand has 369 places, 366 transitions, 4375 flow. Second operand 31 states and 2294 transitions. [2022-11-20 09:32:20,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 701 transitions, 9136 flow [2022-11-20 09:32:21,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 701 transitions, 8432 flow, removed 235 selfloop flow, removed 11 redundant places. [2022-11-20 09:32:21,297 INFO L231 Difference]: Finished difference. Result has 407 places, 419 transitions, 5348 flow [2022-11-20 09:32:21,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5348, PETRI_PLACES=407, PETRI_TRANSITIONS=419} [2022-11-20 09:32:21,298 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 300 predicate places. [2022-11-20 09:32:21,299 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 419 transitions, 5348 flow [2022-11-20 09:32:21,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:21,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:21,300 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:21,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:32:21,300 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:21,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash 827309012, now seen corresponding path program 5 times [2022-11-20 09:32:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:21,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161232271] [2022-11-20 09:32:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:21,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:21,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161232271] [2022-11-20 09:32:21,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161232271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:21,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:21,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125547687] [2022-11-20 09:32:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:21,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:21,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:21,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:21,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:21,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:21,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 419 transitions, 5348 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:21,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:21,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:21,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:26,789 INFO L130 PetriNetUnfolder]: 3731/10581 cut-off events. [2022-11-20 09:32:26,790 INFO L131 PetriNetUnfolder]: For 110362/110381 co-relation queries the response was YES. [2022-11-20 09:32:26,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45943 conditions, 10581 events. 3731/10581 cut-off events. For 110362/110381 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 94916 event pairs, 950 based on Foata normal form. 28/10481 useless extension candidates. Maximal degree in co-relation 45562. Up to 4657 conditions per place. [2022-11-20 09:32:26,984 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 402 selfloop transitions, 172 changer transitions 0/673 dead transitions. [2022-11-20 09:32:26,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 673 transitions, 8993 flow [2022-11-20 09:32:26,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 09:32:26,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 09:32:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2138 transitions. [2022-11-20 09:32:26,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6702194357366771 [2022-11-20 09:32:26,990 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2138 transitions. [2022-11-20 09:32:26,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2138 transitions. [2022-11-20 09:32:26,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:26,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2138 transitions. [2022-11-20 09:32:26,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 73.72413793103448) internal successors, (2138), 29 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,002 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,003 INFO L175 Difference]: Start difference. First operand has 407 places, 419 transitions, 5348 flow. Second operand 29 states and 2138 transitions. [2022-11-20 09:32:27,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 673 transitions, 8993 flow [2022-11-20 09:32:27,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 673 transitions, 8653 flow, removed 107 selfloop flow, removed 10 redundant places. [2022-11-20 09:32:27,688 INFO L231 Difference]: Finished difference. Result has 442 places, 471 transitions, 6754 flow [2022-11-20 09:32:27,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=5073, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6754, PETRI_PLACES=442, PETRI_TRANSITIONS=471} [2022-11-20 09:32:27,689 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 335 predicate places. [2022-11-20 09:32:27,690 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 471 transitions, 6754 flow [2022-11-20 09:32:27,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:27,690 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:27,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 09:32:27,690 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 727232828, now seen corresponding path program 6 times [2022-11-20 09:32:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:27,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069315192] [2022-11-20 09:32:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:28,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:28,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069315192] [2022-11-20 09:32:28,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069315192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:28,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:28,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:28,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346669943] [2022-11-20 09:32:28,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:28,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:28,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:28,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:28,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 471 transitions, 6754 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:28,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:28,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:28,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:34,035 INFO L130 PetriNetUnfolder]: 4048/11376 cut-off events. [2022-11-20 09:32:34,035 INFO L131 PetriNetUnfolder]: For 157952/157973 co-relation queries the response was YES. [2022-11-20 09:32:34,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52993 conditions, 11376 events. 4048/11376 cut-off events. For 157952/157973 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 103134 event pairs, 964 based on Foata normal form. 30/11276 useless extension candidates. Maximal degree in co-relation 52596. Up to 4677 conditions per place. [2022-11-20 09:32:34,274 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 419 selfloop transitions, 213 changer transitions 0/731 dead transitions. [2022-11-20 09:32:34,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 731 transitions, 10532 flow [2022-11-20 09:32:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 09:32:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 09:32:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2561 transitions. [2022-11-20 09:32:34,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6651948051948052 [2022-11-20 09:32:34,281 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2561 transitions. [2022-11-20 09:32:34,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2561 transitions. [2022-11-20 09:32:34,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:34,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2561 transitions. [2022-11-20 09:32:34,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 73.17142857142858) internal successors, (2561), 35 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:34,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:34,296 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:34,296 INFO L175 Difference]: Start difference. First operand has 442 places, 471 transitions, 6754 flow. Second operand 35 states and 2561 transitions. [2022-11-20 09:32:34,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 731 transitions, 10532 flow [2022-11-20 09:32:35,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 731 transitions, 10036 flow, removed 242 selfloop flow, removed 4 redundant places. [2022-11-20 09:32:35,370 INFO L231 Difference]: Finished difference. Result has 482 places, 515 transitions, 7959 flow [2022-11-20 09:32:35,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=6296, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7959, PETRI_PLACES=482, PETRI_TRANSITIONS=515} [2022-11-20 09:32:35,371 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 375 predicate places. [2022-11-20 09:32:35,371 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 515 transitions, 7959 flow [2022-11-20 09:32:35,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:35,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:35,372 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:35,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 09:32:35,372 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 680108252, now seen corresponding path program 2 times [2022-11-20 09:32:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:35,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897934603] [2022-11-20 09:32:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:35,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:35,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897934603] [2022-11-20 09:32:35,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897934603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:35,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:35,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604617709] [2022-11-20 09:32:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:35,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:35,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:35,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:35,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:35,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 515 transitions, 7959 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:35,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:35,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:35,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:42,228 INFO L130 PetriNetUnfolder]: 4371/12539 cut-off events. [2022-11-20 09:32:42,228 INFO L131 PetriNetUnfolder]: For 201328/201332 co-relation queries the response was YES. [2022-11-20 09:32:42,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59735 conditions, 12539 events. 4371/12539 cut-off events. For 201328/201332 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 118761 event pairs, 609 based on Foata normal form. 36/12423 useless extension candidates. Maximal degree in co-relation 59326. Up to 5787 conditions per place. [2022-11-20 09:32:42,521 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 586 selfloop transitions, 203 changer transitions 0/888 dead transitions. [2022-11-20 09:32:42,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 888 transitions, 13927 flow [2022-11-20 09:32:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 09:32:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 09:32:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2612 transitions. [2022-11-20 09:32:42,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6784415584415584 [2022-11-20 09:32:42,526 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2612 transitions. [2022-11-20 09:32:42,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2612 transitions. [2022-11-20 09:32:42,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:42,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2612 transitions. [2022-11-20 09:32:42,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 74.62857142857143) internal successors, (2612), 35 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:42,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:42,538 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:42,538 INFO L175 Difference]: Start difference. First operand has 482 places, 515 transitions, 7959 flow. Second operand 35 states and 2612 transitions. [2022-11-20 09:32:42,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 888 transitions, 13927 flow [2022-11-20 09:32:43,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 888 transitions, 13329 flow, removed 284 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:43,444 INFO L231 Difference]: Finished difference. Result has 520 places, 536 transitions, 8432 flow [2022-11-20 09:32:43,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7475, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8432, PETRI_PLACES=520, PETRI_TRANSITIONS=536} [2022-11-20 09:32:43,445 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 413 predicate places. [2022-11-20 09:32:43,445 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 536 transitions, 8432 flow [2022-11-20 09:32:43,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:43,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:43,445 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:43,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 09:32:43,446 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash -191810130, now seen corresponding path program 7 times [2022-11-20 09:32:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:43,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413204880] [2022-11-20 09:32:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:43,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:44,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:44,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413204880] [2022-11-20 09:32:44,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413204880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:44,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:44,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:44,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042542504] [2022-11-20 09:32:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:44,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:44,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:44,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:44,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 536 transitions, 8432 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:44,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:44,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:44,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:51,252 INFO L130 PetriNetUnfolder]: 4613/13094 cut-off events. [2022-11-20 09:32:51,252 INFO L131 PetriNetUnfolder]: For 247146/247166 co-relation queries the response was YES. [2022-11-20 09:32:51,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66560 conditions, 13094 events. 4613/13094 cut-off events. For 247146/247166 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 122601 event pairs, 926 based on Foata normal form. 28/12956 useless extension candidates. Maximal degree in co-relation 66140. Up to 4677 conditions per place. [2022-11-20 09:32:51,640 INFO L137 encePairwiseOnDemand]: 92/110 looper letters, 453 selfloop transitions, 259 changer transitions 0/811 dead transitions. [2022-11-20 09:32:51,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 811 transitions, 12452 flow [2022-11-20 09:32:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 09:32:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 09:32:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2779 transitions. [2022-11-20 09:32:51,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6648325358851674 [2022-11-20 09:32:51,644 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2779 transitions. [2022-11-20 09:32:51,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2779 transitions. [2022-11-20 09:32:51,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:51,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2779 transitions. [2022-11-20 09:32:51,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 73.13157894736842) internal successors, (2779), 38 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 110.0) internal successors, (4290), 39 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,656 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 110.0) internal successors, (4290), 39 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,656 INFO L175 Difference]: Start difference. First operand has 520 places, 536 transitions, 8432 flow. Second operand 38 states and 2779 transitions. [2022-11-20 09:32:51,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 811 transitions, 12452 flow [2022-11-20 09:32:52,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 811 transitions, 11688 flow, removed 125 selfloop flow, removed 32 redundant places. [2022-11-20 09:32:52,851 INFO L231 Difference]: Finished difference. Result has 531 places, 549 transitions, 8762 flow [2022-11-20 09:32:52,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7758, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8762, PETRI_PLACES=531, PETRI_TRANSITIONS=549} [2022-11-20 09:32:52,853 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 424 predicate places. [2022-11-20 09:32:52,853 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 549 transitions, 8762 flow [2022-11-20 09:32:52,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:52,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:52,854 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:52,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 09:32:52,855 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:52,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1004228602, now seen corresponding path program 3 times [2022-11-20 09:32:52,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:52,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72898791] [2022-11-20 09:32:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:52,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:32:53,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:53,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72898791] [2022-11-20 09:32:53,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72898791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:53,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:53,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:32:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119284491] [2022-11-20 09:32:53,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:53,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:53,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:53,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:53,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:32:53,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 549 transitions, 8762 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:53,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:53,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:32:53,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:00,713 INFO L130 PetriNetUnfolder]: 4963/14234 cut-off events. [2022-11-20 09:33:00,713 INFO L131 PetriNetUnfolder]: For 287243/287245 co-relation queries the response was YES. [2022-11-20 09:33:01,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73888 conditions, 14234 events. 4963/14234 cut-off events. For 287243/287245 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 138541 event pairs, 722 based on Foata normal form. 36/14073 useless extension candidates. Maximal degree in co-relation 73467. Up to 6640 conditions per place. [2022-11-20 09:33:01,094 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 636 selfloop transitions, 221 changer transitions 0/956 dead transitions. [2022-11-20 09:33:01,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 956 transitions, 16154 flow [2022-11-20 09:33:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 09:33:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 09:33:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2667 transitions. [2022-11-20 09:33:01,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6734848484848485 [2022-11-20 09:33:01,097 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2667 transitions. [2022-11-20 09:33:01,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2667 transitions. [2022-11-20 09:33:01,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:01,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2667 transitions. [2022-11-20 09:33:01,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 74.08333333333333) internal successors, (2667), 36 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:01,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 110.0) internal successors, (4070), 37 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:01,105 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 110.0) internal successors, (4070), 37 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:01,105 INFO L175 Difference]: Start difference. First operand has 531 places, 549 transitions, 8762 flow. Second operand 36 states and 2667 transitions. [2022-11-20 09:33:01,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 956 transitions, 16154 flow [2022-11-20 09:33:02,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 956 transitions, 15058 flow, removed 114 selfloop flow, removed 35 redundant places. [2022-11-20 09:33:02,778 INFO L231 Difference]: Finished difference. Result has 543 places, 583 transitions, 9189 flow [2022-11-20 09:33:02,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7834, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9189, PETRI_PLACES=543, PETRI_TRANSITIONS=583} [2022-11-20 09:33:02,779 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 436 predicate places. [2022-11-20 09:33:02,779 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 583 transitions, 9189 flow [2022-11-20 09:33:02,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:02,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:02,780 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:02,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 09:33:02,781 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:33:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 703071070, now seen corresponding path program 4 times [2022-11-20 09:33:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:02,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865339774] [2022-11-20 09:33:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 09:33:03,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:03,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865339774] [2022-11-20 09:33:03,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865339774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:03,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:03,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:33:03,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991904483] [2022-11-20 09:33:03,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:03,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:33:03,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:33:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:33:03,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-20 09:33:03,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 583 transitions, 9189 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:03,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:03,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-20 09:33:03,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand