./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:32:50,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:32:50,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:32:50,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:32:50,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:32:50,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:32:50,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:32:50,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:32:50,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:32:50,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:32:50,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:32:50,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:32:50,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:32:50,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:32:50,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:32:50,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:32:50,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:32:50,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:32:50,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:32:50,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:32:50,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:32:50,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:32:50,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:32:50,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:32:50,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:32:50,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:32:50,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:32:50,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:32:50,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:32:50,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:32:50,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:32:50,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:32:50,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:32:50,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:32:50,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:32:50,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:32:50,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:32:50,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:32:50,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:32:50,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:32:50,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:32:50,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:32:50,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:32:50,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:32:50,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:32:50,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:32:50,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:32:50,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:32:50,480 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:32:50,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:32:50,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:32:50,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:32:50,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:32:50,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:32:50,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:32:50,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:32:50,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:32:50,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:32:50,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:32:50,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:32:50,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:32:50,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:32:50,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:32:50,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:32:50,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:32:50,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:32:50,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:32:50,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:32:50,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:32:50,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:32:50,487 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:32:50,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:32:50,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:32:50,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:32:50,490 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_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2021-11-09 09:32:50,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:32:50,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:32:50,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:32:50,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:32:50,838 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:32:50,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-11-09 09:32:50,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/data/1165505dd/d7b863140d074bcf82da6e7a3a7003b0/FLAGdb3750eb8 [2021-11-09 09:32:51,589 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:32:51,594 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-11-09 09:32:51,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/data/1165505dd/d7b863140d074bcf82da6e7a3a7003b0/FLAGdb3750eb8 [2021-11-09 09:32:51,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/data/1165505dd/d7b863140d074bcf82da6e7a3a7003b0 [2021-11-09 09:32:51,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:32:51,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:32:51,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:32:51,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:32:51,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:32:51,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:51,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2127e1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51, skipping insertion in model container [2021-11-09 09:32:51,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:51,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:32:51,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:32:52,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-11-09 09:32:52,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:32:52,268 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:32:52,318 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-11-09 09:32:52,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:32:52,338 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:32:52,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52 WrapperNode [2021-11-09 09:32:52,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:32:52,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:32:52,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:32:52,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:32:52,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:32:52,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:32:52,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:32:52,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:32:52,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:32:52,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:32:52,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:32:52,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:32:52,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:32:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:32:52,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:32:52,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467e31eb-3e3b-405a-8b75-e3178002ebf7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-09 09:32:52,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-09 09:32:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-09 09:32:52,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-09 09:32:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:32:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:32:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:32:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:32:52,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:32:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:32:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:32:52,544 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 09:32:53,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:32:53,002 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-11-09 09:32:53,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:32:53 BoogieIcfgContainer [2021-11-09 09:32:53,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:32:53,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:32:53,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:32:53,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:32:53,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:32:51" (1/3) ... [2021-11-09 09:32:53,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67239a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:32:53, skipping insertion in model container [2021-11-09 09:32:53,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (2/3) ... [2021-11-09 09:32:53,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67239a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:32:53, skipping insertion in model container [2021-11-09 09:32:53,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:32:53" (3/3) ... [2021-11-09 09:32:53,015 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2021-11-09 09:32:53,022 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 09:32:53,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:32:53,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:32:53,023 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 09:32:53,064 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,068 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,068 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,068 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,068 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,070 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,070 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,070 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,071 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,071 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,071 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,071 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,072 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,072 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,072 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,073 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,073 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,073 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,073 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,074 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,074 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,074 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,075 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,075 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,075 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,076 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,077 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,078 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,078 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,078 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,079 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,079 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,080 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,080 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,081 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,081 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,082 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,082 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,082 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,083 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,083 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,083 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,083 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,084 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,084 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,084 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,085 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,085 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,085 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,085 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,086 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,086 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,086 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,088 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,088 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,088 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,089 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,103 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,104 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,104 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,104 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,105 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,106 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,107 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,107 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,108 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,108 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,108 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,108 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,109 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,109 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,109 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,110 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,110 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,111 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,111 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,111 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,111 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,112 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,112 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,113 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,113 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,114 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,114 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,114 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,114 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,115 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,115 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,115 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,116 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,116 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,116 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,116 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,117 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,117 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,123 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,123 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,123 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,123 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,125 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,126 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,131 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,131 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,131 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,131 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,133 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:32:53,140 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-09 09:32:53,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:32:53,204 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:32:53,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-09 09:32:53,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 152 transitions, 320 flow [2021-11-09 09:32:53,309 INFO L129 PetriNetUnfolder]: 13/150 cut-off events. [2021-11-09 09:32:53,310 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-09 09:32:53,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 150 events. 13/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 253 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2021-11-09 09:32:53,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 152 transitions, 320 flow [2021-11-09 09:32:53,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 142 transitions, 296 flow [2021-11-09 09:32:53,400 INFO L129 PetriNetUnfolder]: 13/141 cut-off events. [2021-11-09 09:32:53,401 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-09 09:32:53,401 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:53,407 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:53,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:53,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1161888943, now seen corresponding path program 1 times [2021-11-09 09:32:53,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:53,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125133125] [2021-11-09 09:32:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:53,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:54,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:54,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125133125] [2021-11-09 09:32:54,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125133125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:54,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:54,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:32:54,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426542454] [2021-11-09 09:32:54,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:32:54,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:32:54,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:32:54,108 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2021-11-09 09:32:54,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 119.75) internal successors, (958), 8 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:54,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:54,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2021-11-09 09:32:54,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:54,588 INFO L129 PetriNetUnfolder]: 47/335 cut-off events. [2021-11-09 09:32:54,588 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-11-09 09:32:54,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 335 events. 47/335 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1481 event pairs, 9 based on Foata normal form. 24/334 useless extension candidates. Maximal degree in co-relation 344. Up to 38 conditions per place. [2021-11-09 09:32:54,618 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 46 selfloop transitions, 10 changer transitions 32/196 dead transitions. [2021-11-09 09:32:54,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 196 transitions, 589 flow [2021-11-09 09:32:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:32:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-09 09:32:54,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1867 transitions. [2021-11-09 09:32:54,646 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8188596491228071 [2021-11-09 09:32:54,647 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1867 transitions. [2021-11-09 09:32:54,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1867 transitions. [2021-11-09 09:32:54,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:54,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1867 transitions. [2021-11-09 09:32:54,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.46666666666667) internal successors, (1867), 15 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:54,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:54,695 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:54,697 INFO L186 Difference]: Start difference. First operand has 136 places, 142 transitions, 296 flow. Second operand 15 states and 1867 transitions. [2021-11-09 09:32:54,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 196 transitions, 589 flow [2021-11-09 09:32:54,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 196 transitions, 575 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-09 09:32:54,715 INFO L242 Difference]: Finished difference. Result has 156 places, 140 transitions, 347 flow [2021-11-09 09:32:54,718 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=347, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2021-11-09 09:32:54,719 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 20 predicate places. [2021-11-09 09:32:54,719 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 347 flow [2021-11-09 09:32:54,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.75) internal successors, (958), 8 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:54,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:54,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:54,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:32:54,722 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:54,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:54,723 INFO L85 PathProgramCache]: Analyzing trace with hash -643551031, now seen corresponding path program 1 times [2021-11-09 09:32:54,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:54,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106577927] [2021-11-09 09:32:54,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:54,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:54,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:54,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106577927] [2021-11-09 09:32:54,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106577927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:54,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:54,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:32:54,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382654327] [2021-11-09 09:32:54,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:32:54,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:32:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:32:54,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-09 09:32:54,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:54,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:54,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-09 09:32:54,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:55,189 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([361] L44-15-->L44-16: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite6_3|) InVars {thread1Thread1of1ForFork0_#t~ite6=|v_thread1Thread1of1ForFork0_#t~ite6_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite6=|v_thread1Thread1of1ForFork0_#t~ite6_3|} AuxVars[] AssignedVars[~result_4~0][49], [26#L44-16true, 33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-09 09:32:55,189 INFO L384 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2021-11-09 09:32:55,190 INFO L387 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2021-11-09 09:32:55,190 INFO L387 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2021-11-09 09:32:55,190 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-09 09:32:55,195 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([404] L50-16-->L50-17: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite10=|v_thread2Thread1of1ForFork1_#t~ite10_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite10][110], [26#L44-16true, 33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-09 09:32:55,195 INFO L384 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2021-11-09 09:32:55,195 INFO L387 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2021-11-09 09:32:55,195 INFO L387 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2021-11-09 09:32:55,197 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-09 09:32:55,204 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([404] L50-16-->L50-17: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite10=|v_thread2Thread1of1ForFork1_#t~ite10_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite10][110], [33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), 138#L44-17true, Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-09 09:32:55,204 INFO L384 tUnfolder$Statistics]: this new event has 69 ancestors and is cut-off event [2021-11-09 09:32:55,204 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-11-09 09:32:55,204 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-11-09 09:32:55,204 INFO L387 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2021-11-09 09:32:55,213 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([361] L44-15-->L44-16: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite6_3|) InVars {thread1Thread1of1ForFork0_#t~ite6=|v_thread1Thread1of1ForFork0_#t~ite6_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite6=|v_thread1Thread1of1ForFork0_#t~ite6_3|} AuxVars[] AssignedVars[~result_4~0][49], [26#L44-16true, 33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-09 09:32:55,213 INFO L384 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2021-11-09 09:32:55,214 INFO L387 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2021-11-09 09:32:55,214 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-11-09 09:32:55,214 INFO L387 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2021-11-09 09:32:55,214 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-09 09:32:55,215 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([404] L50-16-->L50-17: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite10=|v_thread2Thread1of1ForFork1_#t~ite10_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite10][110], [26#L44-16true, 33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-09 09:32:55,215 INFO L384 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2021-11-09 09:32:55,215 INFO L387 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2021-11-09 09:32:55,215 INFO L387 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2021-11-09 09:32:55,216 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-09 09:32:55,216 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-11-09 09:32:55,217 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([404] L50-16-->L50-17: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite10=|v_thread2Thread1of1ForFork1_#t~ite10_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite10][110], [33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), 138#L44-17true, Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-09 09:32:55,217 INFO L384 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2021-11-09 09:32:55,217 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-11-09 09:32:55,217 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-11-09 09:32:55,217 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2021-11-09 09:32:55,217 INFO L387 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2021-11-09 09:32:55,247 INFO L129 PetriNetUnfolder]: 70/768 cut-off events. [2021-11-09 09:32:55,248 INFO L130 PetriNetUnfolder]: For 255/267 co-relation queries the response was YES. [2021-11-09 09:32:55,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 768 events. 70/768 cut-off events. For 255/267 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5613 event pairs, 9 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 1139. Up to 53 conditions per place. [2021-11-09 09:32:55,281 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 21 selfloop transitions, 12 changer transitions 1/158 dead transitions. [2021-11-09 09:32:55,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 158 transitions, 451 flow [2021-11-09 09:32:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:32:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:32:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2021-11-09 09:32:55,284 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9013157894736842 [2021-11-09 09:32:55,284 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2021-11-09 09:32:55,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2021-11-09 09:32:55,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:55,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2021-11-09 09:32:55,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,293 INFO L186 Difference]: Start difference. First operand has 156 places, 140 transitions, 347 flow. Second operand 4 states and 548 transitions. [2021-11-09 09:32:55,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 158 transitions, 451 flow [2021-11-09 09:32:55,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 158 transitions, 440 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-11-09 09:32:55,316 INFO L242 Difference]: Finished difference. Result has 147 places, 150 transitions, 424 flow [2021-11-09 09:32:55,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=147, PETRI_TRANSITIONS=150} [2021-11-09 09:32:55,317 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 11 predicate places. [2021-11-09 09:32:55,317 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 424 flow [2021-11-09 09:32:55,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:55,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:55,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:32:55,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash 256040129, now seen corresponding path program 2 times [2021-11-09 09:32:55,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:55,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747751069] [2021-11-09 09:32:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:55,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:55,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:55,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747751069] [2021-11-09 09:32:55,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747751069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:55,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:55,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:32:55,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999807133] [2021-11-09 09:32:55,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:32:55,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:32:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:32:55,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-09 09:32:55,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 150 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:55,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-09 09:32:55,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:55,719 INFO L129 PetriNetUnfolder]: 59/727 cut-off events. [2021-11-09 09:32:55,719 INFO L130 PetriNetUnfolder]: For 216/290 co-relation queries the response was YES. [2021-11-09 09:32:55,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 727 events. 59/727 cut-off events. For 216/290 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5226 event pairs, 9 based on Foata normal form. 13/707 useless extension candidates. Maximal degree in co-relation 992. Up to 63 conditions per place. [2021-11-09 09:32:55,727 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 28 selfloop transitions, 8 changer transitions 2/162 dead transitions. [2021-11-09 09:32:55,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 162 transitions, 554 flow [2021-11-09 09:32:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:32:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:32:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2021-11-09 09:32:55,730 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8914473684210527 [2021-11-09 09:32:55,730 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2021-11-09 09:32:55,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2021-11-09 09:32:55,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:55,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2021-11-09 09:32:55,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,736 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,737 INFO L186 Difference]: Start difference. First operand has 147 places, 150 transitions, 424 flow. Second operand 4 states and 542 transitions. [2021-11-09 09:32:55,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 162 transitions, 554 flow [2021-11-09 09:32:55,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 162 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 09:32:55,748 INFO L242 Difference]: Finished difference. Result has 153 places, 155 transitions, 498 flow [2021-11-09 09:32:55,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=153, PETRI_TRANSITIONS=155} [2021-11-09 09:32:55,749 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 17 predicate places. [2021-11-09 09:32:55,749 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 155 transitions, 498 flow [2021-11-09 09:32:55,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,751 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:55,751 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:55,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:32:55,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash 667588757, now seen corresponding path program 1 times [2021-11-09 09:32:55,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:55,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200896330] [2021-11-09 09:32:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:55,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:55,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:55,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200896330] [2021-11-09 09:32:55,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200896330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:55,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:55,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:32:55,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32675512] [2021-11-09 09:32:55,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:32:55,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:55,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:32:55,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:32:55,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-09 09:32:55,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 155 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:55,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:55,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-09 09:32:55,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:56,148 INFO L129 PetriNetUnfolder]: 60/846 cut-off events. [2021-11-09 09:32:56,148 INFO L130 PetriNetUnfolder]: For 363/480 co-relation queries the response was YES. [2021-11-09 09:32:56,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 846 events. 60/846 cut-off events. For 363/480 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6060 event pairs, 7 based on Foata normal form. 18/831 useless extension candidates. Maximal degree in co-relation 1183. Up to 57 conditions per place. [2021-11-09 09:32:56,157 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 32 selfloop transitions, 11 changer transitions 2/169 dead transitions. [2021-11-09 09:32:56,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 658 flow [2021-11-09 09:32:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:32:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:32:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2021-11-09 09:32:56,160 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8947368421052632 [2021-11-09 09:32:56,160 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2021-11-09 09:32:56,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2021-11-09 09:32:56,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:56,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2021-11-09 09:32:56,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,168 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,168 INFO L186 Difference]: Start difference. First operand has 153 places, 155 transitions, 498 flow. Second operand 4 states and 544 transitions. [2021-11-09 09:32:56,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 658 flow [2021-11-09 09:32:56,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 169 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 09:32:56,181 INFO L242 Difference]: Finished difference. Result has 158 places, 158 transitions, 560 flow [2021-11-09 09:32:56,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=560, PETRI_PLACES=158, PETRI_TRANSITIONS=158} [2021-11-09 09:32:56,181 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 22 predicate places. [2021-11-09 09:32:56,182 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 158 transitions, 560 flow [2021-11-09 09:32:56,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,182 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:56,182 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:56,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:32:56,183 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:56,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2031003169, now seen corresponding path program 2 times [2021-11-09 09:32:56,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:56,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458694942] [2021-11-09 09:32:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:56,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:56,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:56,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458694942] [2021-11-09 09:32:56,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458694942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:56,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:56,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:32:56,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589728046] [2021-11-09 09:32:56,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:32:56,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:56,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:32:56,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:32:56,306 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-09 09:32:56,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 158 transitions, 560 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:56,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-09 09:32:56,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:56,522 INFO L129 PetriNetUnfolder]: 58/863 cut-off events. [2021-11-09 09:32:56,522 INFO L130 PetriNetUnfolder]: For 491/600 co-relation queries the response was YES. [2021-11-09 09:32:56,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 863 events. 58/863 cut-off events. For 491/600 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6135 event pairs, 7 based on Foata normal form. 19/852 useless extension candidates. Maximal degree in co-relation 1244. Up to 59 conditions per place. [2021-11-09 09:32:56,533 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 33 selfloop transitions, 13 changer transitions 2/172 dead transitions. [2021-11-09 09:32:56,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 172 transitions, 746 flow [2021-11-09 09:32:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:32:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:32:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2021-11-09 09:32:56,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8914473684210527 [2021-11-09 09:32:56,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2021-11-09 09:32:56,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2021-11-09 09:32:56,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:56,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2021-11-09 09:32:56,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,543 INFO L186 Difference]: Start difference. First operand has 158 places, 158 transitions, 560 flow. Second operand 4 states and 542 transitions. [2021-11-09 09:32:56,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 172 transitions, 746 flow [2021-11-09 09:32:56,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 172 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-09 09:32:56,554 INFO L242 Difference]: Finished difference. Result has 162 places, 164 transitions, 656 flow [2021-11-09 09:32:56,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=656, PETRI_PLACES=162, PETRI_TRANSITIONS=164} [2021-11-09 09:32:56,555 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 26 predicate places. [2021-11-09 09:32:56,555 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 164 transitions, 656 flow [2021-11-09 09:32:56,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:56,556 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:56,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:32:56,556 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1385567207, now seen corresponding path program 3 times [2021-11-09 09:32:56,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:56,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824981892] [2021-11-09 09:32:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:56,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:56,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:56,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824981892] [2021-11-09 09:32:56,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824981892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:56,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:56,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:32:56,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859708846] [2021-11-09 09:32:56,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:32:56,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:32:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:32:56,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-09 09:32:56,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 164 transitions, 656 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:56,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-09 09:32:56,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:56,880 INFO L129 PetriNetUnfolder]: 49/750 cut-off events. [2021-11-09 09:32:56,880 INFO L130 PetriNetUnfolder]: For 555/683 co-relation queries the response was YES. [2021-11-09 09:32:56,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 750 events. 49/750 cut-off events. For 555/683 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4978 event pairs, 7 based on Foata normal form. 18/742 useless extension candidates. Maximal degree in co-relation 1144. Up to 49 conditions per place. [2021-11-09 09:32:56,889 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 31 selfloop transitions, 16 changer transitions 4/173 dead transitions. [2021-11-09 09:32:56,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 173 transitions, 808 flow [2021-11-09 09:32:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:32:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:32:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2021-11-09 09:32:56,892 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8914473684210527 [2021-11-09 09:32:56,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2021-11-09 09:32:56,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2021-11-09 09:32:56,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:56,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2021-11-09 09:32:56,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,924 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,924 INFO L186 Difference]: Start difference. First operand has 162 places, 164 transitions, 656 flow. Second operand 4 states and 542 transitions. [2021-11-09 09:32:56,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 173 transitions, 808 flow [2021-11-09 09:32:56,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 173 transitions, 784 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-09 09:32:56,938 INFO L242 Difference]: Finished difference. Result has 164 places, 165 transitions, 713 flow [2021-11-09 09:32:56,938 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=164, PETRI_TRANSITIONS=165} [2021-11-09 09:32:56,939 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 28 predicate places. [2021-11-09 09:32:56,939 INFO L470 AbstractCegarLoop]: Abstraction has has 164 places, 165 transitions, 713 flow [2021-11-09 09:32:56,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:56,939 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:56,940 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:56,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:32:56,940 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:56,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:56,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1352966081, now seen corresponding path program 3 times [2021-11-09 09:32:56,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:56,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693518390] [2021-11-09 09:32:56,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:56,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:57,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:57,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693518390] [2021-11-09 09:32:57,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693518390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:57,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:57,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:32:57,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677561280] [2021-11-09 09:32:57,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:32:57,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:32:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:32:57,050 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-09 09:32:57,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 165 transitions, 713 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:57,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:57,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-09 09:32:57,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:57,275 INFO L129 PetriNetUnfolder]: 42/776 cut-off events. [2021-11-09 09:32:57,275 INFO L130 PetriNetUnfolder]: For 653/835 co-relation queries the response was YES. [2021-11-09 09:32:57,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 776 events. 42/776 cut-off events. For 653/835 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5166 event pairs, 9 based on Foata normal form. 25/778 useless extension candidates. Maximal degree in co-relation 1195. Up to 42 conditions per place. [2021-11-09 09:32:57,283 INFO L132 encePairwiseOnDemand]: 139/152 looper letters, 33 selfloop transitions, 21 changer transitions 2/178 dead transitions. [2021-11-09 09:32:57,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 178 transitions, 899 flow [2021-11-09 09:32:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:32:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 09:32:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 679 transitions. [2021-11-09 09:32:57,287 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8934210526315789 [2021-11-09 09:32:57,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 679 transitions. [2021-11-09 09:32:57,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 679 transitions. [2021-11-09 09:32:57,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:57,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 679 transitions. [2021-11-09 09:32:57,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:57,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:57,294 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:57,294 INFO L186 Difference]: Start difference. First operand has 164 places, 165 transitions, 713 flow. Second operand 5 states and 679 transitions. [2021-11-09 09:32:57,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 178 transitions, 899 flow [2021-11-09 09:32:57,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 178 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 09:32:57,312 INFO L242 Difference]: Finished difference. Result has 168 places, 171 transitions, 828 flow [2021-11-09 09:32:57,312 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2021-11-09 09:32:57,312 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 32 predicate places. [2021-11-09 09:32:57,313 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 828 flow [2021-11-09 09:32:57,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:57,313 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:57,313 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:57,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:32:57,314 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -816977134, now seen corresponding path program 1 times [2021-11-09 09:32:57,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:57,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470870376] [2021-11-09 09:32:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:57,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:57,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:57,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470870376] [2021-11-09 09:32:57,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470870376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:57,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:57,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:32:57,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586438271] [2021-11-09 09:32:57,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:32:57,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:32:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:32:57,583 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:32:57,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 828 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:57,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:57,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:32:57,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:58,458 INFO L129 PetriNetUnfolder]: 274/1387 cut-off events. [2021-11-09 09:32:58,458 INFO L130 PetriNetUnfolder]: For 1024/1075 co-relation queries the response was YES. [2021-11-09 09:32:58,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3005 conditions, 1387 events. 274/1387 cut-off events. For 1024/1075 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10308 event pairs, 158 based on Foata normal form. 1/1347 useless extension candidates. Maximal degree in co-relation 2715. Up to 546 conditions per place. [2021-11-09 09:32:58,475 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 90 selfloop transitions, 7 changer transitions 38/265 dead transitions. [2021-11-09 09:32:58,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 265 transitions, 1414 flow [2021-11-09 09:32:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:32:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-09 09:32:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3476 transitions. [2021-11-09 09:32:58,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7376910016977929 [2021-11-09 09:32:58,490 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3476 transitions. [2021-11-09 09:32:58,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3476 transitions. [2021-11-09 09:32:58,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:58,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3476 transitions. [2021-11-09 09:32:58,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 112.12903225806451) internal successors, (3476), 31 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:58,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:58,527 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:58,528 INFO L186 Difference]: Start difference. First operand has 168 places, 171 transitions, 828 flow. Second operand 31 states and 3476 transitions. [2021-11-09 09:32:58,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 265 transitions, 1414 flow [2021-11-09 09:32:58,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 265 transitions, 1400 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-11-09 09:32:58,548 INFO L242 Difference]: Finished difference. Result has 226 places, 177 transitions, 949 flow [2021-11-09 09:32:58,549 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=949, PETRI_PLACES=226, PETRI_TRANSITIONS=177} [2021-11-09 09:32:58,549 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 90 predicate places. [2021-11-09 09:32:58,549 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 177 transitions, 949 flow [2021-11-09 09:32:58,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:58,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:58,551 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:58,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:32:58,551 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash -15218642, now seen corresponding path program 2 times [2021-11-09 09:32:58,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:58,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30658369] [2021-11-09 09:32:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:58,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:58,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:58,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30658369] [2021-11-09 09:32:58,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30658369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:58,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:58,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:32:58,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105999376] [2021-11-09 09:32:58,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:32:58,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:32:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:32:58,760 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:32:58,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 177 transitions, 949 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:58,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:58,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:32:58,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:32:59,636 INFO L129 PetriNetUnfolder]: 267/1425 cut-off events. [2021-11-09 09:32:59,637 INFO L130 PetriNetUnfolder]: For 5844/5895 co-relation queries the response was YES. [2021-11-09 09:32:59,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 1425 events. 267/1425 cut-off events. For 5844/5895 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 10897 event pairs, 150 based on Foata normal form. 1/1387 useless extension candidates. Maximal degree in co-relation 4720. Up to 547 conditions per place. [2021-11-09 09:32:59,661 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 130 selfloop transitions, 5 changer transitions 38/303 dead transitions. [2021-11-09 09:32:59,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 303 transitions, 2265 flow [2021-11-09 09:32:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:32:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-09 09:32:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3370 transitions. [2021-11-09 09:32:59,673 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7390350877192983 [2021-11-09 09:32:59,673 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3370 transitions. [2021-11-09 09:32:59,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3370 transitions. [2021-11-09 09:32:59,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:32:59,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3370 transitions. [2021-11-09 09:32:59,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.33333333333333) internal successors, (3370), 30 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:59,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:59,735 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:59,735 INFO L186 Difference]: Start difference. First operand has 226 places, 177 transitions, 949 flow. Second operand 30 states and 3370 transitions. [2021-11-09 09:32:59,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 303 transitions, 2265 flow [2021-11-09 09:32:59,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 303 transitions, 2099 flow, removed 80 selfloop flow, removed 13 redundant places. [2021-11-09 09:32:59,782 INFO L242 Difference]: Finished difference. Result has 248 places, 181 transitions, 1057 flow [2021-11-09 09:32:59,783 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1057, PETRI_PLACES=248, PETRI_TRANSITIONS=181} [2021-11-09 09:32:59,783 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 112 predicate places. [2021-11-09 09:32:59,783 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 181 transitions, 1057 flow [2021-11-09 09:32:59,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:59,784 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:32:59,785 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:59,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:32:59,785 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:32:59,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash -749051736, now seen corresponding path program 3 times [2021-11-09 09:32:59,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:59,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338512353] [2021-11-09 09:32:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:59,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:59,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:59,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338512353] [2021-11-09 09:32:59,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338512353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:59,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:59,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:32:59,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432885952] [2021-11-09 09:32:59,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:32:59,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:59,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:32:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:32:59,929 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:32:59,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 181 transitions, 1057 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:59,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:32:59,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:32:59,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:00,808 INFO L129 PetriNetUnfolder]: 277/1417 cut-off events. [2021-11-09 09:33:00,809 INFO L130 PetriNetUnfolder]: For 9928/9979 co-relation queries the response was YES. [2021-11-09 09:33:00,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5756 conditions, 1417 events. 277/1417 cut-off events. For 9928/9979 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10657 event pairs, 164 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 5548. Up to 593 conditions per place. [2021-11-09 09:33:00,838 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 85 selfloop transitions, 16 changer transitions 31/262 dead transitions. [2021-11-09 09:33:00,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 262 transitions, 2382 flow [2021-11-09 09:33:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:33:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-09 09:33:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3133 transitions. [2021-11-09 09:33:00,852 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7361372180451128 [2021-11-09 09:33:00,852 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3133 transitions. [2021-11-09 09:33:00,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3133 transitions. [2021-11-09 09:33:00,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:00,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3133 transitions. [2021-11-09 09:33:00,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.89285714285714) internal successors, (3133), 28 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:00,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:00,888 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:00,896 INFO L186 Difference]: Start difference. First operand has 248 places, 181 transitions, 1057 flow. Second operand 28 states and 3133 transitions. [2021-11-09 09:33:00,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 262 transitions, 2382 flow [2021-11-09 09:33:00,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 262 transitions, 2236 flow, removed 71 selfloop flow, removed 13 redundant places. [2021-11-09 09:33:00,981 INFO L242 Difference]: Finished difference. Result has 256 places, 194 transitions, 1271 flow [2021-11-09 09:33:00,982 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1271, PETRI_PLACES=256, PETRI_TRANSITIONS=194} [2021-11-09 09:33:00,983 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 120 predicate places. [2021-11-09 09:33:00,983 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 194 transitions, 1271 flow [2021-11-09 09:33:00,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:00,984 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:00,984 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:00,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:33:00,985 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash 912650246, now seen corresponding path program 4 times [2021-11-09 09:33:00,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:00,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155230549] [2021-11-09 09:33:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:00,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:01,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:01,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155230549] [2021-11-09 09:33:01,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155230549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:01,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:01,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:01,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973752214] [2021-11-09 09:33:01,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:01,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:01,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:01,188 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:01,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 194 transitions, 1271 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:01,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:01,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:01,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:01,973 INFO L129 PetriNetUnfolder]: 297/1474 cut-off events. [2021-11-09 09:33:01,974 INFO L130 PetriNetUnfolder]: For 11221/11272 co-relation queries the response was YES. [2021-11-09 09:33:01,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6398 conditions, 1474 events. 297/1474 cut-off events. For 11221/11272 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11171 event pairs, 181 based on Foata normal form. 1/1429 useless extension candidates. Maximal degree in co-relation 6185. Up to 614 conditions per place. [2021-11-09 09:33:02,003 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 84 selfloop transitions, 25 changer transitions 31/270 dead transitions. [2021-11-09 09:33:02,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 270 transitions, 2676 flow [2021-11-09 09:33:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:33:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-09 09:33:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2808 transitions. [2021-11-09 09:33:02,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7389473684210527 [2021-11-09 09:33:02,010 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2808 transitions. [2021-11-09 09:33:02,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2808 transitions. [2021-11-09 09:33:02,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:02,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2808 transitions. [2021-11-09 09:33:02,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 112.32) internal successors, (2808), 25 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:02,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:02,026 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:02,027 INFO L186 Difference]: Start difference. First operand has 256 places, 194 transitions, 1271 flow. Second operand 25 states and 2808 transitions. [2021-11-09 09:33:02,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 270 transitions, 2676 flow [2021-11-09 09:33:02,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 270 transitions, 2424 flow, removed 126 selfloop flow, removed 11 redundant places. [2021-11-09 09:33:02,113 INFO L242 Difference]: Finished difference. Result has 273 places, 208 transitions, 1531 flow [2021-11-09 09:33:02,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1531, PETRI_PLACES=273, PETRI_TRANSITIONS=208} [2021-11-09 09:33:02,114 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 137 predicate places. [2021-11-09 09:33:02,115 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 208 transitions, 1531 flow [2021-11-09 09:33:02,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:02,115 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:02,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:02,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:33:02,116 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:02,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1638871922, now seen corresponding path program 5 times [2021-11-09 09:33:02,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:02,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474706050] [2021-11-09 09:33:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:02,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:02,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:02,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474706050] [2021-11-09 09:33:02,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474706050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:02,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:02,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:02,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171783803] [2021-11-09 09:33:02,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:02,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:02,285 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:02,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 208 transitions, 1531 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:02,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:02,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:02,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:03,232 INFO L129 PetriNetUnfolder]: 308/1520 cut-off events. [2021-11-09 09:33:03,232 INFO L130 PetriNetUnfolder]: For 14733/14787 co-relation queries the response was YES. [2021-11-09 09:33:03,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7164 conditions, 1520 events. 308/1520 cut-off events. For 14733/14787 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11613 event pairs, 165 based on Foata normal form. 1/1475 useless extension candidates. Maximal degree in co-relation 6939. Up to 606 conditions per place. [2021-11-09 09:33:03,274 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 97 selfloop transitions, 27 changer transitions 29/283 dead transitions. [2021-11-09 09:33:03,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 283 transitions, 3115 flow [2021-11-09 09:33:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:33:03,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:33:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2021-11-09 09:33:03,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7401315789473685 [2021-11-09 09:33:03,283 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2021-11-09 09:33:03,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2021-11-09 09:33:03,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:03,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2021-11-09 09:33:03,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.5) internal successors, (2475), 22 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:03,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:03,299 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:03,299 INFO L186 Difference]: Start difference. First operand has 273 places, 208 transitions, 1531 flow. Second operand 22 states and 2475 transitions. [2021-11-09 09:33:03,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 283 transitions, 3115 flow [2021-11-09 09:33:03,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 283 transitions, 2868 flow, removed 110 selfloop flow, removed 11 redundant places. [2021-11-09 09:33:03,434 INFO L242 Difference]: Finished difference. Result has 285 places, 221 transitions, 1759 flow [2021-11-09 09:33:03,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1759, PETRI_PLACES=285, PETRI_TRANSITIONS=221} [2021-11-09 09:33:03,435 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 149 predicate places. [2021-11-09 09:33:03,435 INFO L470 AbstractCegarLoop]: Abstraction has has 285 places, 221 transitions, 1759 flow [2021-11-09 09:33:03,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:03,436 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:03,436 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:03,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:33:03,437 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash 895889222, now seen corresponding path program 6 times [2021-11-09 09:33:03,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:03,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58052181] [2021-11-09 09:33:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:03,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:03,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:03,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58052181] [2021-11-09 09:33:03,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58052181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:03,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:03,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:03,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285014791] [2021-11-09 09:33:03,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:03,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:03,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:03,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:03,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:03,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 221 transitions, 1759 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:03,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:03,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:03,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:04,418 INFO L129 PetriNetUnfolder]: 320/1550 cut-off events. [2021-11-09 09:33:04,418 INFO L130 PetriNetUnfolder]: For 16451/16526 co-relation queries the response was YES. [2021-11-09 09:33:04,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7503 conditions, 1550 events. 320/1550 cut-off events. For 16451/16526 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11864 event pairs, 175 based on Foata normal form. 9/1513 useless extension candidates. Maximal degree in co-relation 7386. Up to 622 conditions per place. [2021-11-09 09:33:04,455 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 106 selfloop transitions, 39 changer transitions 24/299 dead transitions. [2021-11-09 09:33:04,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 299 transitions, 3273 flow [2021-11-09 09:33:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:33:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:33:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2145 transitions. [2021-11-09 09:33:04,460 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7427285318559557 [2021-11-09 09:33:04,460 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2145 transitions. [2021-11-09 09:33:04,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2145 transitions. [2021-11-09 09:33:04,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:04,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2145 transitions. [2021-11-09 09:33:04,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.89473684210526) internal successors, (2145), 19 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) [2021-11-09 09:33:04,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:04,472 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:04,472 INFO L186 Difference]: Start difference. First operand has 285 places, 221 transitions, 1759 flow. Second operand 19 states and 2145 transitions. [2021-11-09 09:33:04,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 299 transitions, 3273 flow [2021-11-09 09:33:04,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 299 transitions, 3019 flow, removed 97 selfloop flow, removed 13 redundant places. [2021-11-09 09:33:04,616 INFO L242 Difference]: Finished difference. Result has 291 places, 235 transitions, 1979 flow [2021-11-09 09:33:04,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1979, PETRI_PLACES=291, PETRI_TRANSITIONS=235} [2021-11-09 09:33:04,617 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 155 predicate places. [2021-11-09 09:33:04,618 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 235 transitions, 1979 flow [2021-11-09 09:33:04,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:04,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:04,619 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:04,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:33:04,619 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:04,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:04,620 INFO L85 PathProgramCache]: Analyzing trace with hash 968481708, now seen corresponding path program 7 times [2021-11-09 09:33:04,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:04,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715775772] [2021-11-09 09:33:04,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:04,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:04,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715775772] [2021-11-09 09:33:04,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715775772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:04,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:04,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:04,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142444596] [2021-11-09 09:33:04,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:04,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:04,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:04,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:04,812 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:04,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 235 transitions, 1979 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:04,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:04,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:04,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:05,818 INFO L129 PetriNetUnfolder]: 315/1592 cut-off events. [2021-11-09 09:33:05,818 INFO L130 PetriNetUnfolder]: For 16419/16476 co-relation queries the response was YES. [2021-11-09 09:33:05,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7627 conditions, 1592 events. 315/1592 cut-off events. For 16419/16476 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12435 event pairs, 169 based on Foata normal form. 1/1547 useless extension candidates. Maximal degree in co-relation 7451. Up to 609 conditions per place. [2021-11-09 09:33:05,854 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 118 selfloop transitions, 32 changer transitions 35/315 dead transitions. [2021-11-09 09:33:05,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 315 transitions, 3803 flow [2021-11-09 09:33:05,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:33:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:33:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2918 transitions. [2021-11-09 09:33:05,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7383603238866396 [2021-11-09 09:33:05,860 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2918 transitions. [2021-11-09 09:33:05,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2918 transitions. [2021-11-09 09:33:05,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:05,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2918 transitions. [2021-11-09 09:33:05,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.23076923076923) internal successors, (2918), 26 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:05,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:05,877 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:05,878 INFO L186 Difference]: Start difference. First operand has 291 places, 235 transitions, 1979 flow. Second operand 26 states and 2918 transitions. [2021-11-09 09:33:05,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 315 transitions, 3803 flow [2021-11-09 09:33:06,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 315 transitions, 3606 flow, removed 60 selfloop flow, removed 8 redundant places. [2021-11-09 09:33:06,035 INFO L242 Difference]: Finished difference. Result has 322 places, 246 transitions, 2178 flow [2021-11-09 09:33:06,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2178, PETRI_PLACES=322, PETRI_TRANSITIONS=246} [2021-11-09 09:33:06,036 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 186 predicate places. [2021-11-09 09:33:06,036 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 246 transitions, 2178 flow [2021-11-09 09:33:06,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:06,037 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:06,037 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:06,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:33:06,038 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:06,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:06,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1464833810, now seen corresponding path program 8 times [2021-11-09 09:33:06,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:06,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848607423] [2021-11-09 09:33:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:06,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:06,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:06,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848607423] [2021-11-09 09:33:06,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848607423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:06,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:06,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:06,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283440122] [2021-11-09 09:33:06,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:06,187 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:06,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 246 transitions, 2178 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:06,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:06,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:06,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:07,179 INFO L129 PetriNetUnfolder]: 325/1601 cut-off events. [2021-11-09 09:33:07,180 INFO L130 PetriNetUnfolder]: For 20250/20329 co-relation queries the response was YES. [2021-11-09 09:33:07,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8138 conditions, 1601 events. 325/1601 cut-off events. For 20250/20329 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12550 event pairs, 171 based on Foata normal form. 9/1563 useless extension candidates. Maximal degree in co-relation 7887. Up to 628 conditions per place. [2021-11-09 09:33:07,214 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 122 selfloop transitions, 44 changer transitions 39/335 dead transitions. [2021-11-09 09:33:07,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 335 transitions, 3893 flow [2021-11-09 09:33:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:33:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-09 09:33:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3137 transitions. [2021-11-09 09:33:07,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7370770676691729 [2021-11-09 09:33:07,220 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3137 transitions. [2021-11-09 09:33:07,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3137 transitions. [2021-11-09 09:33:07,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:07,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3137 transitions. [2021-11-09 09:33:07,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 112.03571428571429) internal successors, (3137), 28 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:07,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:07,235 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:07,236 INFO L186 Difference]: Start difference. First operand has 322 places, 246 transitions, 2178 flow. Second operand 28 states and 3137 transitions. [2021-11-09 09:33:07,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 335 transitions, 3893 flow [2021-11-09 09:33:07,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 335 transitions, 3626 flow, removed 123 selfloop flow, removed 17 redundant places. [2021-11-09 09:33:07,427 INFO L242 Difference]: Finished difference. Result has 335 places, 253 transitions, 2274 flow [2021-11-09 09:33:07,428 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2274, PETRI_PLACES=335, PETRI_TRANSITIONS=253} [2021-11-09 09:33:07,428 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-09 09:33:07,428 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 253 transitions, 2274 flow [2021-11-09 09:33:07,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:07,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:07,429 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:07,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:33:07,429 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:07,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash -234916372, now seen corresponding path program 9 times [2021-11-09 09:33:07,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:07,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763737251] [2021-11-09 09:33:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:07,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:07,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:07,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763737251] [2021-11-09 09:33:07,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763737251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:07,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:07,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:07,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596869407] [2021-11-09 09:33:07,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:07,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:07,583 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:07,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 253 transitions, 2274 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:07,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:07,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:07,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:08,604 INFO L129 PetriNetUnfolder]: 322/1623 cut-off events. [2021-11-09 09:33:08,605 INFO L130 PetriNetUnfolder]: For 18184/18265 co-relation queries the response was YES. [2021-11-09 09:33:08,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7964 conditions, 1623 events. 322/1623 cut-off events. For 18184/18265 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12766 event pairs, 196 based on Foata normal form. 4/1577 useless extension candidates. Maximal degree in co-relation 7795. Up to 626 conditions per place. [2021-11-09 09:33:08,637 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 121 selfloop transitions, 37 changer transitions 35/323 dead transitions. [2021-11-09 09:33:08,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 323 transitions, 3895 flow [2021-11-09 09:33:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:33:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-09 09:33:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3030 transitions. [2021-11-09 09:33:08,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7383040935672515 [2021-11-09 09:33:08,644 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3030 transitions. [2021-11-09 09:33:08,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3030 transitions. [2021-11-09 09:33:08,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:08,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3030 transitions. [2021-11-09 09:33:08,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.22222222222223) internal successors, (3030), 27 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:08,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:08,659 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:08,660 INFO L186 Difference]: Start difference. First operand has 335 places, 253 transitions, 2274 flow. Second operand 27 states and 3030 transitions. [2021-11-09 09:33:08,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 323 transitions, 3895 flow [2021-11-09 09:33:08,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 323 transitions, 3667 flow, removed 90 selfloop flow, removed 20 redundant places. [2021-11-09 09:33:08,787 INFO L242 Difference]: Finished difference. Result has 343 places, 258 transitions, 2454 flow [2021-11-09 09:33:08,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2454, PETRI_PLACES=343, PETRI_TRANSITIONS=258} [2021-11-09 09:33:08,788 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-09 09:33:08,788 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 258 transitions, 2454 flow [2021-11-09 09:33:08,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:08,788 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:08,789 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:08,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:33:08,789 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:08,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash -27740822, now seen corresponding path program 10 times [2021-11-09 09:33:08,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:08,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717511242] [2021-11-09 09:33:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:08,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:08,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:08,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717511242] [2021-11-09 09:33:08,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717511242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:08,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:08,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:08,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645845770] [2021-11-09 09:33:08,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:08,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:08,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:08,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 258 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:08,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:08,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:08,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:09,733 INFO L129 PetriNetUnfolder]: 310/1552 cut-off events. [2021-11-09 09:33:09,734 INFO L130 PetriNetUnfolder]: For 17641/17711 co-relation queries the response was YES. [2021-11-09 09:33:09,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 1552 events. 310/1552 cut-off events. For 17641/17711 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12108 event pairs, 169 based on Foata normal form. 7/1516 useless extension candidates. Maximal degree in co-relation 7567. Up to 627 conditions per place. [2021-11-09 09:33:09,763 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 120 selfloop transitions, 45 changer transitions 34/329 dead transitions. [2021-11-09 09:33:09,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 329 transitions, 3928 flow [2021-11-09 09:33:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:33:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:33:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2695 transitions. [2021-11-09 09:33:09,768 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7387609649122807 [2021-11-09 09:33:09,769 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2695 transitions. [2021-11-09 09:33:09,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2695 transitions. [2021-11-09 09:33:09,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:09,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2695 transitions. [2021-11-09 09:33:09,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.29166666666667) internal successors, (2695), 24 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:09,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:09,782 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:09,782 INFO L186 Difference]: Start difference. First operand has 343 places, 258 transitions, 2454 flow. Second operand 24 states and 2695 transitions. [2021-11-09 09:33:09,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 329 transitions, 3928 flow [2021-11-09 09:33:09,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 329 transitions, 3658 flow, removed 94 selfloop flow, removed 20 redundant places. [2021-11-09 09:33:09,924 INFO L242 Difference]: Finished difference. Result has 341 places, 258 transitions, 2436 flow [2021-11-09 09:33:09,925 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2436, PETRI_PLACES=341, PETRI_TRANSITIONS=258} [2021-11-09 09:33:09,925 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 205 predicate places. [2021-11-09 09:33:09,925 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 258 transitions, 2436 flow [2021-11-09 09:33:09,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:09,926 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:09,927 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:09,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:33:09,927 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1053746396, now seen corresponding path program 11 times [2021-11-09 09:33:09,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:09,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080602994] [2021-11-09 09:33:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:09,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:10,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:10,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080602994] [2021-11-09 09:33:10,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080602994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:10,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:10,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:10,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966710942] [2021-11-09 09:33:10,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:10,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:10,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:10,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 258 transitions, 2436 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:10,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:10,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:10,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:10,986 INFO L129 PetriNetUnfolder]: 306/1539 cut-off events. [2021-11-09 09:33:10,986 INFO L130 PetriNetUnfolder]: For 16559/16643 co-relation queries the response was YES. [2021-11-09 09:33:11,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1539 events. 306/1539 cut-off events. For 16559/16643 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11911 event pairs, 169 based on Foata normal form. 9/1501 useless extension candidates. Maximal degree in co-relation 7315. Up to 625 conditions per place. [2021-11-09 09:33:11,018 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 111 selfloop transitions, 29 changer transitions 32/302 dead transitions. [2021-11-09 09:33:11,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 302 transitions, 3388 flow [2021-11-09 09:33:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2245 transitions. [2021-11-09 09:33:11,024 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7384868421052632 [2021-11-09 09:33:11,024 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2245 transitions. [2021-11-09 09:33:11,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2245 transitions. [2021-11-09 09:33:11,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:11,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2245 transitions. [2021-11-09 09:33:11,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.25) internal successors, (2245), 20 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:11,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:11,036 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:11,036 INFO L186 Difference]: Start difference. First operand has 341 places, 258 transitions, 2436 flow. Second operand 20 states and 2245 transitions. [2021-11-09 09:33:11,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 302 transitions, 3388 flow [2021-11-09 09:33:11,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 302 transitions, 3236 flow, removed 46 selfloop flow, removed 21 redundant places. [2021-11-09 09:33:11,178 INFO L242 Difference]: Finished difference. Result has 331 places, 237 transitions, 2080 flow [2021-11-09 09:33:11,179 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2080, PETRI_PLACES=331, PETRI_TRANSITIONS=237} [2021-11-09 09:33:11,179 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 195 predicate places. [2021-11-09 09:33:11,180 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 237 transitions, 2080 flow [2021-11-09 09:33:11,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:11,180 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:11,180 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:11,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 09:33:11,181 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:11,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1435626564, now seen corresponding path program 12 times [2021-11-09 09:33:11,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:11,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294162126] [2021-11-09 09:33:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:11,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:11,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:11,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294162126] [2021-11-09 09:33:11,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294162126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:11,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:11,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:11,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532344903] [2021-11-09 09:33:11,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:11,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:11,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:11,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 237 transitions, 2080 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:11,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:11,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:11,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:12,214 INFO L129 PetriNetUnfolder]: 304/1506 cut-off events. [2021-11-09 09:33:12,214 INFO L130 PetriNetUnfolder]: For 15214/15276 co-relation queries the response was YES. [2021-11-09 09:33:12,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7450 conditions, 1506 events. 304/1506 cut-off events. For 15214/15276 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11547 event pairs, 181 based on Foata normal form. 3/1464 useless extension candidates. Maximal degree in co-relation 7340. Up to 624 conditions per place. [2021-11-09 09:33:12,243 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 97 selfloop transitions, 39 changer transitions 25/291 dead transitions. [2021-11-09 09:33:12,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 291 transitions, 3262 flow [2021-11-09 09:33:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:33:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:33:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2021-11-09 09:33:12,249 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7401315789473685 [2021-11-09 09:33:12,249 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2021-11-09 09:33:12,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2021-11-09 09:33:12,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:12,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2021-11-09 09:33:12,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.5) internal successors, (2475), 22 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:12,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:12,263 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:12,263 INFO L186 Difference]: Start difference. First operand has 331 places, 237 transitions, 2080 flow. Second operand 22 states and 2475 transitions. [2021-11-09 09:33:12,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 291 transitions, 3262 flow [2021-11-09 09:33:12,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 291 transitions, 2971 flow, removed 43 selfloop flow, removed 21 redundant places. [2021-11-09 09:33:12,451 INFO L242 Difference]: Finished difference. Result has 312 places, 249 transitions, 2227 flow [2021-11-09 09:33:12,452 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2227, PETRI_PLACES=312, PETRI_TRANSITIONS=249} [2021-11-09 09:33:12,452 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 176 predicate places. [2021-11-09 09:33:12,453 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 249 transitions, 2227 flow [2021-11-09 09:33:12,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:12,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:12,454 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:12,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 09:33:12,454 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:12,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash 64569744, now seen corresponding path program 13 times [2021-11-09 09:33:12,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:12,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052548521] [2021-11-09 09:33:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:12,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:12,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:12,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052548521] [2021-11-09 09:33:12,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052548521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:12,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:12,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:12,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752179997] [2021-11-09 09:33:12,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:12,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:12,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:12,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:12,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 249 transitions, 2227 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:12,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:12,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:12,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:13,516 INFO L129 PetriNetUnfolder]: 310/1540 cut-off events. [2021-11-09 09:33:13,517 INFO L130 PetriNetUnfolder]: For 14268/14330 co-relation queries the response was YES. [2021-11-09 09:33:13,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1540 events. 310/1540 cut-off events. For 14268/14330 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11885 event pairs, 183 based on Foata normal form. 3/1498 useless extension candidates. Maximal degree in co-relation 7328. Up to 624 conditions per place. [2021-11-09 09:33:13,545 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 103 selfloop transitions, 47 changer transitions 25/305 dead transitions. [2021-11-09 09:33:13,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 305 transitions, 3441 flow [2021-11-09 09:33:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:13,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2258 transitions. [2021-11-09 09:33:13,550 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7427631578947368 [2021-11-09 09:33:13,550 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2258 transitions. [2021-11-09 09:33:13,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2258 transitions. [2021-11-09 09:33:13,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:13,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2258 transitions. [2021-11-09 09:33:13,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:13,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:13,562 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:13,563 INFO L186 Difference]: Start difference. First operand has 312 places, 249 transitions, 2227 flow. Second operand 20 states and 2258 transitions. [2021-11-09 09:33:13,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 305 transitions, 3441 flow [2021-11-09 09:33:13,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 305 transitions, 3330 flow, removed 43 selfloop flow, removed 5 redundant places. [2021-11-09 09:33:13,734 INFO L242 Difference]: Finished difference. Result has 328 places, 261 transitions, 2503 flow [2021-11-09 09:33:13,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2503, PETRI_PLACES=328, PETRI_TRANSITIONS=261} [2021-11-09 09:33:13,735 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 192 predicate places. [2021-11-09 09:33:13,735 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 261 transitions, 2503 flow [2021-11-09 09:33:13,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:13,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:13,736 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:13,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 09:33:13,737 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 772646652, now seen corresponding path program 14 times [2021-11-09 09:33:13,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:13,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313859729] [2021-11-09 09:33:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:13,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:13,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:13,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313859729] [2021-11-09 09:33:13,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313859729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:13,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:13,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:13,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869019096] [2021-11-09 09:33:13,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:13,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:13,934 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:13,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 261 transitions, 2503 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:13,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:13,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:13,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:14,758 INFO L129 PetriNetUnfolder]: 306/1527 cut-off events. [2021-11-09 09:33:14,758 INFO L130 PetriNetUnfolder]: For 14893/14953 co-relation queries the response was YES. [2021-11-09 09:33:14,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7495 conditions, 1527 events. 306/1527 cut-off events. For 14893/14953 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11799 event pairs, 180 based on Foata normal form. 3/1485 useless extension candidates. Maximal degree in co-relation 7381. Up to 624 conditions per place. [2021-11-09 09:33:14,800 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 107 selfloop transitions, 46 changer transitions 27/310 dead transitions. [2021-11-09 09:33:14,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 310 transitions, 3694 flow [2021-11-09 09:33:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:33:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-09 09:33:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2368 transitions. [2021-11-09 09:33:14,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7418546365914787 [2021-11-09 09:33:14,805 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2368 transitions. [2021-11-09 09:33:14,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2368 transitions. [2021-11-09 09:33:14,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:14,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2368 transitions. [2021-11-09 09:33:14,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.76190476190476) internal successors, (2368), 21 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:14,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:14,815 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:14,816 INFO L186 Difference]: Start difference. First operand has 328 places, 261 transitions, 2503 flow. Second operand 21 states and 2368 transitions. [2021-11-09 09:33:14,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 310 transitions, 3694 flow [2021-11-09 09:33:15,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 310 transitions, 3565 flow, removed 36 selfloop flow, removed 8 redundant places. [2021-11-09 09:33:15,010 INFO L242 Difference]: Finished difference. Result has 343 places, 268 transitions, 2702 flow [2021-11-09 09:33:15,011 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2702, PETRI_PLACES=343, PETRI_TRANSITIONS=268} [2021-11-09 09:33:15,011 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-09 09:33:15,012 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 268 transitions, 2702 flow [2021-11-09 09:33:15,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:15,012 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:15,012 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:15,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 09:33:15,013 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:15,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:15,015 INFO L85 PathProgramCache]: Analyzing trace with hash -803067856, now seen corresponding path program 15 times [2021-11-09 09:33:15,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:15,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914427784] [2021-11-09 09:33:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:15,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:15,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:15,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914427784] [2021-11-09 09:33:15,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914427784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:15,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:15,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:15,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806758064] [2021-11-09 09:33:15,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:15,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:15,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:15,176 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:15,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 268 transitions, 2702 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:15,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:15,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:15,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:16,042 INFO L129 PetriNetUnfolder]: 308/1542 cut-off events. [2021-11-09 09:33:16,043 INFO L130 PetriNetUnfolder]: For 15501/15561 co-relation queries the response was YES. [2021-11-09 09:33:16,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1542 events. 308/1542 cut-off events. For 15501/15561 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11972 event pairs, 180 based on Foata normal form. 3/1500 useless extension candidates. Maximal degree in co-relation 7545. Up to 625 conditions per place. [2021-11-09 09:33:16,077 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 110 selfloop transitions, 50 changer transitions 33/323 dead transitions. [2021-11-09 09:33:16,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 323 transitions, 3969 flow [2021-11-09 09:33:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:33:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:33:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2699 transitions. [2021-11-09 09:33:16,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398574561403509 [2021-11-09 09:33:16,088 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2699 transitions. [2021-11-09 09:33:16,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2699 transitions. [2021-11-09 09:33:16,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:16,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2699 transitions. [2021-11-09 09:33:16,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.45833333333333) internal successors, (2699), 24 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:16,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:16,107 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:16,107 INFO L186 Difference]: Start difference. First operand has 343 places, 268 transitions, 2702 flow. Second operand 24 states and 2699 transitions. [2021-11-09 09:33:16,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 323 transitions, 3969 flow [2021-11-09 09:33:16,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 323 transitions, 3828 flow, removed 39 selfloop flow, removed 7 redundant places. [2021-11-09 09:33:16,281 INFO L242 Difference]: Finished difference. Result has 364 places, 273 transitions, 2856 flow [2021-11-09 09:33:16,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2856, PETRI_PLACES=364, PETRI_TRANSITIONS=273} [2021-11-09 09:33:16,281 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 228 predicate places. [2021-11-09 09:33:16,281 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 273 transitions, 2856 flow [2021-11-09 09:33:16,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:16,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:16,282 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:16,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 09:33:16,282 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2103982150, now seen corresponding path program 16 times [2021-11-09 09:33:16,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:16,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678257179] [2021-11-09 09:33:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:16,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:16,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:16,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678257179] [2021-11-09 09:33:16,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678257179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:16,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:16,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:16,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790753503] [2021-11-09 09:33:16,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:16,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:16,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:16,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:16,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:16,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 273 transitions, 2856 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:16,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:16,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:16,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:17,195 INFO L129 PetriNetUnfolder]: 311/1565 cut-off events. [2021-11-09 09:33:17,195 INFO L130 PetriNetUnfolder]: For 16923/16994 co-relation queries the response was YES. [2021-11-09 09:33:17,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7766 conditions, 1565 events. 311/1565 cut-off events. For 16923/16994 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12138 event pairs, 195 based on Foata normal form. 3/1518 useless extension candidates. Maximal degree in co-relation 7637. Up to 624 conditions per place. [2021-11-09 09:33:17,271 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 114 selfloop transitions, 45 changer transitions 38/327 dead transitions. [2021-11-09 09:33:17,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 327 transitions, 4173 flow [2021-11-09 09:33:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:33:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-09 09:33:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2588 transitions. [2021-11-09 09:33:17,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7402745995423341 [2021-11-09 09:33:17,274 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2588 transitions. [2021-11-09 09:33:17,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2588 transitions. [2021-11-09 09:33:17,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:17,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2588 transitions. [2021-11-09 09:33:17,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.52173913043478) internal successors, (2588), 23 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:17,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:17,283 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:17,283 INFO L186 Difference]: Start difference. First operand has 364 places, 273 transitions, 2856 flow. Second operand 23 states and 2588 transitions. [2021-11-09 09:33:17,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 327 transitions, 4173 flow [2021-11-09 09:33:17,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 327 transitions, 3986 flow, removed 55 selfloop flow, removed 16 redundant places. [2021-11-09 09:33:17,484 INFO L242 Difference]: Finished difference. Result has 368 places, 272 transitions, 2857 flow [2021-11-09 09:33:17,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2857, PETRI_PLACES=368, PETRI_TRANSITIONS=272} [2021-11-09 09:33:17,485 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 232 predicate places. [2021-11-09 09:33:17,485 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 272 transitions, 2857 flow [2021-11-09 09:33:17,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:17,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:17,486 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:17,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 09:33:17,487 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1513369266, now seen corresponding path program 17 times [2021-11-09 09:33:17,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:17,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315644340] [2021-11-09 09:33:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:17,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:17,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:17,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315644340] [2021-11-09 09:33:17,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315644340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:17,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:17,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:17,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554925769] [2021-11-09 09:33:17,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:17,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:17,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:17,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:17,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 272 transitions, 2857 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:17,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:17,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:17,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:18,378 INFO L129 PetriNetUnfolder]: 295/1499 cut-off events. [2021-11-09 09:33:18,378 INFO L130 PetriNetUnfolder]: For 15499/15559 co-relation queries the response was YES. [2021-11-09 09:33:18,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7390 conditions, 1499 events. 295/1499 cut-off events. For 15499/15559 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11607 event pairs, 179 based on Foata normal form. 3/1457 useless extension candidates. Maximal degree in co-relation 7261. Up to 622 conditions per place. [2021-11-09 09:33:18,398 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 103 selfloop transitions, 34 changer transitions 32/299 dead transitions. [2021-11-09 09:33:18,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 299 transitions, 3573 flow [2021-11-09 09:33:18,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2252 transitions. [2021-11-09 09:33:18,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7407894736842106 [2021-11-09 09:33:18,402 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2252 transitions. [2021-11-09 09:33:18,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2252 transitions. [2021-11-09 09:33:18,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:18,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2252 transitions. [2021-11-09 09:33:18,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.6) internal successors, (2252), 20 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:18,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:18,410 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:18,410 INFO L186 Difference]: Start difference. First operand has 368 places, 272 transitions, 2857 flow. Second operand 20 states and 2252 transitions. [2021-11-09 09:33:18,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 299 transitions, 3573 flow [2021-11-09 09:33:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 299 transitions, 3365 flow, removed 39 selfloop flow, removed 21 redundant places. [2021-11-09 09:33:18,560 INFO L242 Difference]: Finished difference. Result has 359 places, 254 transitions, 2448 flow [2021-11-09 09:33:18,561 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2448, PETRI_PLACES=359, PETRI_TRANSITIONS=254} [2021-11-09 09:33:18,561 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 223 predicate places. [2021-11-09 09:33:18,561 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 254 transitions, 2448 flow [2021-11-09 09:33:18,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:18,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:18,562 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:18,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 09:33:18,562 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 334460434, now seen corresponding path program 18 times [2021-11-09 09:33:18,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:18,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708091028] [2021-11-09 09:33:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:18,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:18,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:18,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708091028] [2021-11-09 09:33:18,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708091028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:18,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:18,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:18,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242145301] [2021-11-09 09:33:18,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:18,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:18,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:18,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:18,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:18,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 254 transitions, 2448 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:18,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:18,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:18,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:19,358 INFO L129 PetriNetUnfolder]: 296/1534 cut-off events. [2021-11-09 09:33:19,359 INFO L130 PetriNetUnfolder]: For 15133/15204 co-relation queries the response was YES. [2021-11-09 09:33:19,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7203 conditions, 1534 events. 296/1534 cut-off events. For 15133/15204 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11922 event pairs, 195 based on Foata normal form. 3/1487 useless extension candidates. Maximal degree in co-relation 7082. Up to 623 conditions per place. [2021-11-09 09:33:19,380 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 97 selfloop transitions, 29 changer transitions 31/287 dead transitions. [2021-11-09 09:33:19,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 287 transitions, 3243 flow [2021-11-09 09:33:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:33:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:33:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2141 transitions. [2021-11-09 09:33:19,382 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7413434903047091 [2021-11-09 09:33:19,382 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2141 transitions. [2021-11-09 09:33:19,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2141 transitions. [2021-11-09 09:33:19,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:19,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2141 transitions. [2021-11-09 09:33:19,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.6842105263158) internal successors, (2141), 19 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:19,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:19,388 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:19,388 INFO L186 Difference]: Start difference. First operand has 359 places, 254 transitions, 2448 flow. Second operand 19 states and 2141 transitions. [2021-11-09 09:33:19,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 287 transitions, 3243 flow [2021-11-09 09:33:19,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 287 transitions, 3028 flow, removed 24 selfloop flow, removed 22 redundant places. [2021-11-09 09:33:19,523 INFO L242 Difference]: Finished difference. Result has 337 places, 243 transitions, 2165 flow [2021-11-09 09:33:19,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2165, PETRI_PLACES=337, PETRI_TRANSITIONS=243} [2021-11-09 09:33:19,523 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 201 predicate places. [2021-11-09 09:33:19,523 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 243 transitions, 2165 flow [2021-11-09 09:33:19,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:19,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:19,524 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:19,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 09:33:19,524 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash -26173834, now seen corresponding path program 19 times [2021-11-09 09:33:19,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:19,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622138047] [2021-11-09 09:33:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:19,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:19,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:19,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622138047] [2021-11-09 09:33:19,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622138047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:19,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:19,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:19,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456324907] [2021-11-09 09:33:19,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:19,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:19,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:19,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 243 transitions, 2165 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:19,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:19,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:19,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:20,354 INFO L129 PetriNetUnfolder]: 287/1492 cut-off events. [2021-11-09 09:33:20,354 INFO L130 PetriNetUnfolder]: For 13975/14046 co-relation queries the response was YES. [2021-11-09 09:33:20,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6814 conditions, 1492 events. 287/1492 cut-off events. For 13975/14046 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11445 event pairs, 195 based on Foata normal form. 3/1445 useless extension candidates. Maximal degree in co-relation 6700. Up to 614 conditions per place. [2021-11-09 09:33:20,385 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 86 selfloop transitions, 15 changer transitions 33/264 dead transitions. [2021-11-09 09:33:20,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 264 transitions, 2706 flow [2021-11-09 09:33:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2238 transitions. [2021-11-09 09:33:20,389 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7361842105263158 [2021-11-09 09:33:20,390 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2238 transitions. [2021-11-09 09:33:20,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2238 transitions. [2021-11-09 09:33:20,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:20,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2238 transitions. [2021-11-09 09:33:20,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 111.9) internal successors, (2238), 20 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) [2021-11-09 09:33:20,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:20,398 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:20,398 INFO L186 Difference]: Start difference. First operand has 337 places, 243 transitions, 2165 flow. Second operand 20 states and 2238 transitions. [2021-11-09 09:33:20,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 264 transitions, 2706 flow [2021-11-09 09:33:20,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 264 transitions, 2550 flow, removed 23 selfloop flow, removed 23 redundant places. [2021-11-09 09:33:20,559 INFO L242 Difference]: Finished difference. Result has 320 places, 218 transitions, 1713 flow [2021-11-09 09:33:20,559 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1713, PETRI_PLACES=320, PETRI_TRANSITIONS=218} [2021-11-09 09:33:20,560 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 184 predicate places. [2021-11-09 09:33:20,560 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 218 transitions, 1713 flow [2021-11-09 09:33:20,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:20,560 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:20,560 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:20,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 09:33:20,561 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:20,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1558727268, now seen corresponding path program 20 times [2021-11-09 09:33:20,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:20,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629489688] [2021-11-09 09:33:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:20,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:20,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:20,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629489688] [2021-11-09 09:33:20,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629489688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:20,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:20,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:20,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575634268] [2021-11-09 09:33:20,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:20,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:20,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:20,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 218 transitions, 1713 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:20,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:20,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:20,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:21,467 INFO L129 PetriNetUnfolder]: 285/1482 cut-off events. [2021-11-09 09:33:21,467 INFO L130 PetriNetUnfolder]: For 13662/13716 co-relation queries the response was YES. [2021-11-09 09:33:21,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6764 conditions, 1482 events. 285/1482 cut-off events. For 13662/13716 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11340 event pairs, 172 based on Foata normal form. 1/1438 useless extension candidates. Maximal degree in co-relation 6658. Up to 599 conditions per place. [2021-11-09 09:33:21,487 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 85 selfloop transitions, 35 changer transitions 34/284 dead transitions. [2021-11-09 09:33:21,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 284 transitions, 3067 flow [2021-11-09 09:33:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:33:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-09 09:33:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3027 transitions. [2021-11-09 09:33:21,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7375730994152047 [2021-11-09 09:33:21,491 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3027 transitions. [2021-11-09 09:33:21,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3027 transitions. [2021-11-09 09:33:21,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:21,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3027 transitions. [2021-11-09 09:33:21,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.11111111111111) internal successors, (3027), 27 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:21,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:21,501 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:21,501 INFO L186 Difference]: Start difference. First operand has 320 places, 218 transitions, 1713 flow. Second operand 27 states and 3027 transitions. [2021-11-09 09:33:21,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 284 transitions, 3067 flow [2021-11-09 09:33:21,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 284 transitions, 2889 flow, removed 32 selfloop flow, removed 20 redundant places. [2021-11-09 09:33:21,604 INFO L242 Difference]: Finished difference. Result has 309 places, 226 transitions, 1887 flow [2021-11-09 09:33:21,605 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1887, PETRI_PLACES=309, PETRI_TRANSITIONS=226} [2021-11-09 09:33:21,605 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 173 predicate places. [2021-11-09 09:33:21,605 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 226 transitions, 1887 flow [2021-11-09 09:33:21,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:21,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:21,606 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:21,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 09:33:21,607 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:21,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2011217434, now seen corresponding path program 21 times [2021-11-09 09:33:21,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:21,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784747009] [2021-11-09 09:33:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:21,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:21,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:21,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784747009] [2021-11-09 09:33:21,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784747009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:21,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:21,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:21,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479372521] [2021-11-09 09:33:21,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:21,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:21,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:21,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 226 transitions, 1887 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:21,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:21,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:21,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:22,514 INFO L129 PetriNetUnfolder]: 281/1463 cut-off events. [2021-11-09 09:33:22,514 INFO L130 PetriNetUnfolder]: For 13455/13509 co-relation queries the response was YES. [2021-11-09 09:33:22,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 1463 events. 281/1463 cut-off events. For 13455/13509 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11147 event pairs, 169 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 6673. Up to 597 conditions per place. [2021-11-09 09:33:22,532 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 88 selfloop transitions, 34 changer transitions 33/285 dead transitions. [2021-11-09 09:33:22,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 285 transitions, 3275 flow [2021-11-09 09:33:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:33:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:33:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2920 transitions. [2021-11-09 09:33:22,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7388663967611336 [2021-11-09 09:33:22,536 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2920 transitions. [2021-11-09 09:33:22,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2920 transitions. [2021-11-09 09:33:22,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:22,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2920 transitions. [2021-11-09 09:33:22,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.3076923076923) internal successors, (2920), 26 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:22,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:22,545 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:22,545 INFO L186 Difference]: Start difference. First operand has 309 places, 226 transitions, 1887 flow. Second operand 26 states and 2920 transitions. [2021-11-09 09:33:22,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 285 transitions, 3275 flow [2021-11-09 09:33:22,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 3066 flow, removed 85 selfloop flow, removed 17 redundant places. [2021-11-09 09:33:22,634 INFO L242 Difference]: Finished difference. Result has 321 places, 233 transitions, 2085 flow [2021-11-09 09:33:22,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2085, PETRI_PLACES=321, PETRI_TRANSITIONS=233} [2021-11-09 09:33:22,635 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 185 predicate places. [2021-11-09 09:33:22,635 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 233 transitions, 2085 flow [2021-11-09 09:33:22,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:22,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:22,636 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:22,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-09 09:33:22,636 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1408346988, now seen corresponding path program 22 times [2021-11-09 09:33:22,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:22,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554145505] [2021-11-09 09:33:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:22,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:22,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:22,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554145505] [2021-11-09 09:33:22,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554145505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:22,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:22,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:22,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741682794] [2021-11-09 09:33:22,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:22,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:22,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:22,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 233 transitions, 2085 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:22,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:22,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:22,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:23,339 INFO L129 PetriNetUnfolder]: 274/1428 cut-off events. [2021-11-09 09:33:23,339 INFO L130 PetriNetUnfolder]: For 13538/13592 co-relation queries the response was YES. [2021-11-09 09:33:23,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1428 events. 274/1428 cut-off events. For 13538/13592 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 10808 event pairs, 164 based on Foata normal form. 1/1385 useless extension candidates. Maximal degree in co-relation 6586. Up to 599 conditions per place. [2021-11-09 09:33:23,359 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 95 selfloop transitions, 39 changer transitions 26/290 dead transitions. [2021-11-09 09:33:23,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 290 transitions, 3333 flow [2021-11-09 09:33:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:33:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:33:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2470 transitions. [2021-11-09 09:33:23,362 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-11-09 09:33:23,362 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2470 transitions. [2021-11-09 09:33:23,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2470 transitions. [2021-11-09 09:33:23,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:23,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2470 transitions. [2021-11-09 09:33:23,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.27272727272727) internal successors, (2470), 22 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:23,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:23,370 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:23,370 INFO L186 Difference]: Start difference. First operand has 321 places, 233 transitions, 2085 flow. Second operand 22 states and 2470 transitions. [2021-11-09 09:33:23,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 290 transitions, 3333 flow [2021-11-09 09:33:23,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 290 transitions, 3092 flow, removed 90 selfloop flow, removed 18 redundant places. [2021-11-09 09:33:23,496 INFO L242 Difference]: Finished difference. Result has 319 places, 240 transitions, 2171 flow [2021-11-09 09:33:23,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2171, PETRI_PLACES=319, PETRI_TRANSITIONS=240} [2021-11-09 09:33:23,497 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 183 predicate places. [2021-11-09 09:33:23,497 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 240 transitions, 2171 flow [2021-11-09 09:33:23,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:23,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:23,499 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:23,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 09:33:23,502 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1079357320, now seen corresponding path program 23 times [2021-11-09 09:33:23,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:23,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889155153] [2021-11-09 09:33:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:23,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:23,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:23,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889155153] [2021-11-09 09:33:23,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889155153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:23,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:23,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:23,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303246875] [2021-11-09 09:33:23,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:23,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:23,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:23,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:23,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:23,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 240 transitions, 2171 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:23,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:23,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:23,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:24,272 INFO L129 PetriNetUnfolder]: 278/1461 cut-off events. [2021-11-09 09:33:24,272 INFO L130 PetriNetUnfolder]: For 12464/12518 co-relation queries the response was YES. [2021-11-09 09:33:24,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1461 events. 278/1461 cut-off events. For 12464/12518 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11114 event pairs, 168 based on Foata normal form. 1/1417 useless extension candidates. Maximal degree in co-relation 6622. Up to 601 conditions per place. [2021-11-09 09:33:24,292 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 90 selfloop transitions, 46 changer transitions 26/292 dead transitions. [2021-11-09 09:33:24,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 292 transitions, 3334 flow [2021-11-09 09:33:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:33:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-09 09:33:24,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2364 transitions. [2021-11-09 09:33:24,296 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7406015037593985 [2021-11-09 09:33:24,296 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2364 transitions. [2021-11-09 09:33:24,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2364 transitions. [2021-11-09 09:33:24,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:24,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2364 transitions. [2021-11-09 09:33:24,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.57142857142857) internal successors, (2364), 21 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:24,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:24,301 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:24,301 INFO L186 Difference]: Start difference. First operand has 319 places, 240 transitions, 2171 flow. Second operand 21 states and 2364 transitions. [2021-11-09 09:33:24,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 292 transitions, 3334 flow [2021-11-09 09:33:24,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 292 transitions, 3213 flow, removed 45 selfloop flow, removed 10 redundant places. [2021-11-09 09:33:24,448 INFO L242 Difference]: Finished difference. Result has 330 places, 250 transitions, 2407 flow [2021-11-09 09:33:24,449 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2407, PETRI_PLACES=330, PETRI_TRANSITIONS=250} [2021-11-09 09:33:24,449 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 194 predicate places. [2021-11-09 09:33:24,449 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 250 transitions, 2407 flow [2021-11-09 09:33:24,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:24,450 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:24,450 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:24,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-09 09:33:24,450 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:24,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:24,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2127205980, now seen corresponding path program 24 times [2021-11-09 09:33:24,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:24,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537002801] [2021-11-09 09:33:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:24,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:24,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:24,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537002801] [2021-11-09 09:33:24,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537002801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:24,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:24,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:24,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144074872] [2021-11-09 09:33:24,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:24,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:24,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:24,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:24,593 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:24,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 250 transitions, 2407 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:24,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:24,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:24,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:25,306 INFO L129 PetriNetUnfolder]: 274/1452 cut-off events. [2021-11-09 09:33:25,306 INFO L130 PetriNetUnfolder]: For 12434/12488 co-relation queries the response was YES. [2021-11-09 09:33:25,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 1452 events. 274/1452 cut-off events. For 12434/12488 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11075 event pairs, 166 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 6627. Up to 599 conditions per place. [2021-11-09 09:33:25,329 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 98 selfloop transitions, 41 changer transitions 27/296 dead transitions. [2021-11-09 09:33:25,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 296 transitions, 3551 flow [2021-11-09 09:33:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:33:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:33:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2021-11-09 09:33:25,332 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7401315789473685 [2021-11-09 09:33:25,332 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2021-11-09 09:33:25,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2021-11-09 09:33:25,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:25,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2021-11-09 09:33:25,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.5) internal successors, (2475), 22 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:25,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:25,338 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:25,338 INFO L186 Difference]: Start difference. First operand has 330 places, 250 transitions, 2407 flow. Second operand 22 states and 2475 transitions. [2021-11-09 09:33:25,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 296 transitions, 3551 flow [2021-11-09 09:33:25,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 296 transitions, 3406 flow, removed 43 selfloop flow, removed 9 redundant places. [2021-11-09 09:33:25,445 INFO L242 Difference]: Finished difference. Result has 343 places, 254 transitions, 2524 flow [2021-11-09 09:33:25,445 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2524, PETRI_PLACES=343, PETRI_TRANSITIONS=254} [2021-11-09 09:33:25,445 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-09 09:33:25,445 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 254 transitions, 2524 flow [2021-11-09 09:33:25,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:25,446 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:25,446 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:25,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 09:33:25,446 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1439936064, now seen corresponding path program 25 times [2021-11-09 09:33:25,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:25,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147461284] [2021-11-09 09:33:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:25,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:25,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:25,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147461284] [2021-11-09 09:33:25,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147461284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:25,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:25,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:25,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707357199] [2021-11-09 09:33:25,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:25,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:25,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:25,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 254 transitions, 2524 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:25,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:25,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:25,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:26,285 INFO L129 PetriNetUnfolder]: 280/1476 cut-off events. [2021-11-09 09:33:26,285 INFO L130 PetriNetUnfolder]: For 13300/13354 co-relation queries the response was YES. [2021-11-09 09:33:26,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 1476 events. 280/1476 cut-off events. For 13300/13354 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11317 event pairs, 164 based on Foata normal form. 1/1431 useless extension candidates. Maximal degree in co-relation 6860. Up to 601 conditions per place. [2021-11-09 09:33:26,311 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 91 selfloop transitions, 56 changer transitions 25/302 dead transitions. [2021-11-09 09:33:26,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 302 transitions, 3751 flow [2021-11-09 09:33:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2257 transitions. [2021-11-09 09:33:26,314 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7424342105263158 [2021-11-09 09:33:26,314 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2257 transitions. [2021-11-09 09:33:26,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2257 transitions. [2021-11-09 09:33:26,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:26,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2257 transitions. [2021-11-09 09:33:26,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.85) internal successors, (2257), 20 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:26,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:26,320 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:26,321 INFO L186 Difference]: Start difference. First operand has 343 places, 254 transitions, 2524 flow. Second operand 20 states and 2257 transitions. [2021-11-09 09:33:26,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 302 transitions, 3751 flow [2021-11-09 09:33:26,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 302 transitions, 3583 flow, removed 58 selfloop flow, removed 8 redundant places. [2021-11-09 09:33:26,434 INFO L242 Difference]: Finished difference. Result has 356 places, 266 transitions, 2845 flow [2021-11-09 09:33:26,434 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2845, PETRI_PLACES=356, PETRI_TRANSITIONS=266} [2021-11-09 09:33:26,435 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 220 predicate places. [2021-11-09 09:33:26,435 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 266 transitions, 2845 flow [2021-11-09 09:33:26,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:26,436 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:26,436 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:26,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 09:33:26,436 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:26,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1842571272, now seen corresponding path program 26 times [2021-11-09 09:33:26,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:26,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894538855] [2021-11-09 09:33:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:26,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:26,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:26,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894538855] [2021-11-09 09:33:26,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894538855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:26,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:26,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:26,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263826082] [2021-11-09 09:33:26,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:26,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:26,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:26,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:26,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 266 transitions, 2845 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:26,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:26,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:26,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:27,368 INFO L129 PetriNetUnfolder]: 284/1489 cut-off events. [2021-11-09 09:33:27,369 INFO L130 PetriNetUnfolder]: For 14196/14250 co-relation queries the response was YES. [2021-11-09 09:33:27,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 1489 events. 284/1489 cut-off events. For 14196/14250 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11447 event pairs, 161 based on Foata normal form. 1/1444 useless extension candidates. Maximal degree in co-relation 7128. Up to 603 conditions per place. [2021-11-09 09:33:27,392 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 111 selfloop transitions, 46 changer transitions 25/312 dead transitions. [2021-11-09 09:33:27,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 312 transitions, 4147 flow [2021-11-09 09:33:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:33:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:33:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2478 transitions. [2021-11-09 09:33:27,395 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7410287081339713 [2021-11-09 09:33:27,395 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2478 transitions. [2021-11-09 09:33:27,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2478 transitions. [2021-11-09 09:33:27,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:27,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2478 transitions. [2021-11-09 09:33:27,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.63636363636364) internal successors, (2478), 22 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:27,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:27,401 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:27,402 INFO L186 Difference]: Start difference. First operand has 356 places, 266 transitions, 2845 flow. Second operand 22 states and 2478 transitions. [2021-11-09 09:33:27,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 312 transitions, 4147 flow [2021-11-09 09:33:27,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 312 transitions, 3909 flow, removed 71 selfloop flow, removed 9 redundant places. [2021-11-09 09:33:27,551 INFO L242 Difference]: Finished difference. Result has 369 places, 278 transitions, 3085 flow [2021-11-09 09:33:27,551 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3085, PETRI_PLACES=369, PETRI_TRANSITIONS=278} [2021-11-09 09:33:27,551 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 233 predicate places. [2021-11-09 09:33:27,552 INFO L470 AbstractCegarLoop]: Abstraction has has 369 places, 278 transitions, 3085 flow [2021-11-09 09:33:27,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:27,552 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:27,552 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:27,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 09:33:27,553 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash -570479608, now seen corresponding path program 27 times [2021-11-09 09:33:27,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:27,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149279370] [2021-11-09 09:33:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:27,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:27,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:27,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149279370] [2021-11-09 09:33:27,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149279370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:27,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:27,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:27,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67779382] [2021-11-09 09:33:27,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:27,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:27,694 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:27,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 278 transitions, 3085 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:27,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:27,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:27,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:28,440 INFO L129 PetriNetUnfolder]: 280/1483 cut-off events. [2021-11-09 09:33:28,441 INFO L130 PetriNetUnfolder]: For 14237/14291 co-relation queries the response was YES. [2021-11-09 09:33:28,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7207 conditions, 1483 events. 280/1483 cut-off events. For 14237/14291 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11367 event pairs, 161 based on Foata normal form. 1/1438 useless extension candidates. Maximal degree in co-relation 7076. Up to 601 conditions per place. [2021-11-09 09:33:28,462 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 114 selfloop transitions, 48 changer transitions 27/319 dead transitions. [2021-11-09 09:33:28,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 319 transitions, 4328 flow [2021-11-09 09:33:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:33:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-09 09:33:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2371 transitions. [2021-11-09 09:33:28,465 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7427944862155389 [2021-11-09 09:33:28,465 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2371 transitions. [2021-11-09 09:33:28,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2371 transitions. [2021-11-09 09:33:28,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:28,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2371 transitions. [2021-11-09 09:33:28,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.9047619047619) internal successors, (2371), 21 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,472 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,472 INFO L186 Difference]: Start difference. First operand has 369 places, 278 transitions, 3085 flow. Second operand 21 states and 2371 transitions. [2021-11-09 09:33:28,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 319 transitions, 4328 flow [2021-11-09 09:33:28,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 319 transitions, 4049 flow, removed 120 selfloop flow, removed 6 redundant places. [2021-11-09 09:33:28,643 INFO L242 Difference]: Finished difference. Result has 384 places, 285 transitions, 3212 flow [2021-11-09 09:33:28,644 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3212, PETRI_PLACES=384, PETRI_TRANSITIONS=285} [2021-11-09 09:33:28,644 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 248 predicate places. [2021-11-09 09:33:28,644 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 285 transitions, 3212 flow [2021-11-09 09:33:28,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:28,645 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:28,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 09:33:28,645 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:28,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash 400796910, now seen corresponding path program 28 times [2021-11-09 09:33:28,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:28,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464605465] [2021-11-09 09:33:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:28,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:28,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:28,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464605465] [2021-11-09 09:33:28,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464605465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:28,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:28,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:28,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431703140] [2021-11-09 09:33:28,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:28,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:28,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:28,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:28,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:28,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 285 transitions, 3212 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:28,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:28,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:29,376 INFO L129 PetriNetUnfolder]: 270/1461 cut-off events. [2021-11-09 09:33:29,379 INFO L130 PetriNetUnfolder]: For 13444/13498 co-relation queries the response was YES. [2021-11-09 09:33:29,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6957 conditions, 1461 events. 270/1461 cut-off events. For 13444/13498 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11238 event pairs, 160 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 6818. Up to 598 conditions per place. [2021-11-09 09:33:29,414 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 115 selfloop transitions, 36 changer transitions 34/315 dead transitions. [2021-11-09 09:33:29,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 315 transitions, 4042 flow [2021-11-09 09:33:29,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:33:29,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-09 09:33:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2029 transitions. [2021-11-09 09:33:29,420 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.741593567251462 [2021-11-09 09:33:29,420 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2029 transitions. [2021-11-09 09:33:29,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2029 transitions. [2021-11-09 09:33:29,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:29,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2029 transitions. [2021-11-09 09:33:29,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.72222222222223) internal successors, (2029), 18 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,427 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,427 INFO L186 Difference]: Start difference. First operand has 384 places, 285 transitions, 3212 flow. Second operand 18 states and 2029 transitions. [2021-11-09 09:33:29,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 315 transitions, 4042 flow [2021-11-09 09:33:29,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 315 transitions, 3860 flow, removed 49 selfloop flow, removed 12 redundant places. [2021-11-09 09:33:29,589 INFO L242 Difference]: Finished difference. Result has 384 places, 265 transitions, 2757 flow [2021-11-09 09:33:29,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3036, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2757, PETRI_PLACES=384, PETRI_TRANSITIONS=265} [2021-11-09 09:33:29,590 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 248 predicate places. [2021-11-09 09:33:29,590 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 265 transitions, 2757 flow [2021-11-09 09:33:29,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,590 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:29,590 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:29,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 09:33:29,597 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1364501168, now seen corresponding path program 29 times [2021-11-09 09:33:29,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:29,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881994673] [2021-11-09 09:33:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:29,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:29,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:29,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881994673] [2021-11-09 09:33:29,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881994673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:29,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:29,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:29,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108699471] [2021-11-09 09:33:29,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:29,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:29,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:29,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 265 transitions, 2757 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:29,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:29,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:30,374 INFO L129 PetriNetUnfolder]: 265/1446 cut-off events. [2021-11-09 09:33:30,374 INFO L130 PetriNetUnfolder]: For 12584/12638 co-relation queries the response was YES. [2021-11-09 09:33:30,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6736 conditions, 1446 events. 265/1446 cut-off events. For 12584/12638 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11097 event pairs, 162 based on Foata normal form. 1/1402 useless extension candidates. Maximal degree in co-relation 6602. Up to 596 conditions per place. [2021-11-09 09:33:30,396 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 107 selfloop transitions, 27 changer transitions 32/296 dead transitions. [2021-11-09 09:33:30,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 296 transitions, 3593 flow [2021-11-09 09:33:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:33:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:33:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2141 transitions. [2021-11-09 09:33:30,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7413434903047091 [2021-11-09 09:33:30,399 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2141 transitions. [2021-11-09 09:33:30,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2141 transitions. [2021-11-09 09:33:30,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:30,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2141 transitions. [2021-11-09 09:33:30,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.6842105263158) internal successors, (2141), 19 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,404 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,404 INFO L186 Difference]: Start difference. First operand has 384 places, 265 transitions, 2757 flow. Second operand 19 states and 2141 transitions. [2021-11-09 09:33:30,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 296 transitions, 3593 flow [2021-11-09 09:33:30,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 296 transitions, 3306 flow, removed 35 selfloop flow, removed 23 redundant places. [2021-11-09 09:33:30,518 INFO L242 Difference]: Finished difference. Result has 362 places, 254 transitions, 2407 flow [2021-11-09 09:33:30,519 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2407, PETRI_PLACES=362, PETRI_TRANSITIONS=254} [2021-11-09 09:33:30,519 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 226 predicate places. [2021-11-09 09:33:30,519 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 254 transitions, 2407 flow [2021-11-09 09:33:30,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:30,519 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:30,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-09 09:33:30,520 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2056501944, now seen corresponding path program 30 times [2021-11-09 09:33:30,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:30,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014476899] [2021-11-09 09:33:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:30,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:30,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:30,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014476899] [2021-11-09 09:33:30,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014476899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:30,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:30,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:30,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707990272] [2021-11-09 09:33:30,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:30,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:30,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:30,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 254 transitions, 2407 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:30,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:30,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:31,261 INFO L129 PetriNetUnfolder]: 256/1380 cut-off events. [2021-11-09 09:33:31,262 INFO L130 PetriNetUnfolder]: For 10872/10926 co-relation queries the response was YES. [2021-11-09 09:33:31,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6150 conditions, 1380 events. 256/1380 cut-off events. For 10872/10926 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10342 event pairs, 162 based on Foata normal form. 1/1336 useless extension candidates. Maximal degree in co-relation 6023. Up to 592 conditions per place. [2021-11-09 09:33:31,283 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 96 selfloop transitions, 15 changer transitions 33/274 dead transitions. [2021-11-09 09:33:31,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 274 transitions, 2981 flow [2021-11-09 09:33:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2241 transitions. [2021-11-09 09:33:31,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7371710526315789 [2021-11-09 09:33:31,286 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2241 transitions. [2021-11-09 09:33:31,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2241 transitions. [2021-11-09 09:33:31,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:31,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2241 transitions. [2021-11-09 09:33:31,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.05) internal successors, (2241), 20 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,290 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,290 INFO L186 Difference]: Start difference. First operand has 362 places, 254 transitions, 2407 flow. Second operand 20 states and 2241 transitions. [2021-11-09 09:33:31,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 274 transitions, 2981 flow [2021-11-09 09:33:31,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 274 transitions, 2830 flow, removed 21 selfloop flow, removed 23 redundant places. [2021-11-09 09:33:31,393 INFO L242 Difference]: Finished difference. Result has 345 places, 231 transitions, 1977 flow [2021-11-09 09:33:31,394 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1977, PETRI_PLACES=345, PETRI_TRANSITIONS=231} [2021-11-09 09:33:31,394 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 209 predicate places. [2021-11-09 09:33:31,394 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 231 transitions, 1977 flow [2021-11-09 09:33:31,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,394 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:31,395 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:31,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-09 09:33:31,395 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1033402056, now seen corresponding path program 31 times [2021-11-09 09:33:31,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:31,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657630907] [2021-11-09 09:33:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:31,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:31,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:31,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657630907] [2021-11-09 09:33:31,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657630907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:31,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:31,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:31,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549153557] [2021-11-09 09:33:31,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:31,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:31,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:31,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:31,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 231 transitions, 1977 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:31,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:31,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:32,226 INFO L129 PetriNetUnfolder]: 259/1406 cut-off events. [2021-11-09 09:33:32,226 INFO L130 PetriNetUnfolder]: For 10621/10675 co-relation queries the response was YES. [2021-11-09 09:33:32,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6153 conditions, 1406 events. 259/1406 cut-off events. For 10621/10675 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10678 event pairs, 161 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 6035. Up to 592 conditions per place. [2021-11-09 09:33:32,248 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 78 selfloop transitions, 37 changer transitions 33/278 dead transitions. [2021-11-09 09:33:32,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 278 transitions, 3009 flow [2021-11-09 09:33:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:33:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:33:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2698 transitions. [2021-11-09 09:33:32,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2021-11-09 09:33:32,253 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2698 transitions. [2021-11-09 09:33:32,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2698 transitions. [2021-11-09 09:33:32,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:32,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2698 transitions. [2021-11-09 09:33:32,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.41666666666667) internal successors, (2698), 24 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,263 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,264 INFO L186 Difference]: Start difference. First operand has 345 places, 231 transitions, 1977 flow. Second operand 24 states and 2698 transitions. [2021-11-09 09:33:32,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 278 transitions, 3009 flow [2021-11-09 09:33:32,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 278 transitions, 2823 flow, removed 29 selfloop flow, removed 20 redundant places. [2021-11-09 09:33:32,398 INFO L242 Difference]: Finished difference. Result has 331 places, 236 transitions, 2086 flow [2021-11-09 09:33:32,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2086, PETRI_PLACES=331, PETRI_TRANSITIONS=236} [2021-11-09 09:33:32,399 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 195 predicate places. [2021-11-09 09:33:32,399 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 236 transitions, 2086 flow [2021-11-09 09:33:32,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:32,400 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:32,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-09 09:33:32,400 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:32,401 INFO L85 PathProgramCache]: Analyzing trace with hash 243979502, now seen corresponding path program 32 times [2021-11-09 09:33:32,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:32,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416181385] [2021-11-09 09:33:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:32,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:32,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:32,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416181385] [2021-11-09 09:33:32,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416181385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:32,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:32,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:32,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721728098] [2021-11-09 09:33:32,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:32,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:32,581 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:32,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 236 transitions, 2086 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:32,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:32,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:33,357 INFO L129 PetriNetUnfolder]: 256/1393 cut-off events. [2021-11-09 09:33:33,357 INFO L130 PetriNetUnfolder]: For 10112/10166 co-relation queries the response was YES. [2021-11-09 09:33:33,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 1393 events. 256/1393 cut-off events. For 10112/10166 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10580 event pairs, 160 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 5873. Up to 592 conditions per place. [2021-11-09 09:33:33,388 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 82 selfloop transitions, 32 changer transitions 38/282 dead transitions. [2021-11-09 09:33:33,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 282 transitions, 3113 flow [2021-11-09 09:33:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:33:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-09 09:33:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2587 transitions. [2021-11-09 09:33:33,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7399885583524027 [2021-11-09 09:33:33,398 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2587 transitions. [2021-11-09 09:33:33,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2587 transitions. [2021-11-09 09:33:33,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:33,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2587 transitions. [2021-11-09 09:33:33,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.47826086956522) internal successors, (2587), 23 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,406 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,406 INFO L186 Difference]: Start difference. First operand has 331 places, 236 transitions, 2086 flow. Second operand 23 states and 2587 transitions. [2021-11-09 09:33:33,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 282 transitions, 3113 flow [2021-11-09 09:33:33,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 282 transitions, 2993 flow, removed 42 selfloop flow, removed 14 redundant places. [2021-11-09 09:33:33,497 INFO L242 Difference]: Finished difference. Result has 337 places, 235 transitions, 2104 flow [2021-11-09 09:33:33,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2104, PETRI_PLACES=337, PETRI_TRANSITIONS=235} [2021-11-09 09:33:33,497 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 201 predicate places. [2021-11-09 09:33:33,497 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 235 transitions, 2104 flow [2021-11-09 09:33:33,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,498 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:33,498 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:33,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-09 09:33:33,498 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1359564634, now seen corresponding path program 33 times [2021-11-09 09:33:33,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:33,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299645763] [2021-11-09 09:33:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:33,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:33,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:33,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299645763] [2021-11-09 09:33:33,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299645763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:33,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:33,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:33,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834065135] [2021-11-09 09:33:33,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:33,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:33,666 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:33,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 235 transitions, 2104 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:33,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:33,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:34,262 INFO L129 PetriNetUnfolder]: 246/1349 cut-off events. [2021-11-09 09:33:34,263 INFO L130 PetriNetUnfolder]: For 9693/9747 co-relation queries the response was YES. [2021-11-09 09:33:34,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 1349 events. 246/1349 cut-off events. For 9693/9747 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10111 event pairs, 160 based on Foata normal form. 1/1304 useless extension candidates. Maximal degree in co-relation 5610. Up to 590 conditions per place. [2021-11-09 09:33:34,283 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 71 selfloop transitions, 21 changer transitions 32/254 dead transitions. [2021-11-09 09:33:34,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 254 transitions, 2606 flow [2021-11-09 09:33:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2251 transitions. [2021-11-09 09:33:34,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7404605263157895 [2021-11-09 09:33:34,285 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2251 transitions. [2021-11-09 09:33:34,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2251 transitions. [2021-11-09 09:33:34,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:34,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2251 transitions. [2021-11-09 09:33:34,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.55) internal successors, (2251), 20 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,293 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,293 INFO L186 Difference]: Start difference. First operand has 337 places, 235 transitions, 2104 flow. Second operand 20 states and 2251 transitions. [2021-11-09 09:33:34,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 254 transitions, 2606 flow [2021-11-09 09:33:34,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 254 transitions, 2435 flow, removed 33 selfloop flow, removed 21 redundant places. [2021-11-09 09:33:34,373 INFO L242 Difference]: Finished difference. Result has 328 places, 217 transitions, 1726 flow [2021-11-09 09:33:34,374 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1726, PETRI_PLACES=328, PETRI_TRANSITIONS=217} [2021-11-09 09:33:34,374 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 192 predicate places. [2021-11-09 09:33:34,374 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 217 transitions, 1726 flow [2021-11-09 09:33:34,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,374 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:34,374 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:34,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-09 09:33:34,375 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:34,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1059898950, now seen corresponding path program 34 times [2021-11-09 09:33:34,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:34,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918033486] [2021-11-09 09:33:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:34,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:34,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:34,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918033486] [2021-11-09 09:33:34,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918033486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:34,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:34,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:34,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564619630] [2021-11-09 09:33:34,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:34,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:34,541 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:34,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 217 transitions, 1726 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:34,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:34,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:35,273 INFO L129 PetriNetUnfolder]: 241/1330 cut-off events. [2021-11-09 09:33:35,273 INFO L130 PetriNetUnfolder]: For 9131/9185 co-relation queries the response was YES. [2021-11-09 09:33:35,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1330 events. 241/1330 cut-off events. For 9131/9185 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10000 event pairs, 160 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 5391. Up to 588 conditions per place. [2021-11-09 09:33:35,287 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 64 selfloop transitions, 17 changer transitions 30/241 dead transitions. [2021-11-09 09:33:35,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 241 transitions, 2290 flow [2021-11-09 09:33:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2249 transitions. [2021-11-09 09:33:35,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398026315789473 [2021-11-09 09:33:35,289 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2249 transitions. [2021-11-09 09:33:35,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2249 transitions. [2021-11-09 09:33:35,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:35,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2249 transitions. [2021-11-09 09:33:35,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.45) internal successors, (2249), 20 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,292 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,293 INFO L186 Difference]: Start difference. First operand has 328 places, 217 transitions, 1726 flow. Second operand 20 states and 2249 transitions. [2021-11-09 09:33:35,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 241 transitions, 2290 flow [2021-11-09 09:33:35,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 241 transitions, 2116 flow, removed 21 selfloop flow, removed 22 redundant places. [2021-11-09 09:33:35,350 INFO L242 Difference]: Finished difference. Result has 308 places, 206 transitions, 1485 flow [2021-11-09 09:33:35,351 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1485, PETRI_PLACES=308, PETRI_TRANSITIONS=206} [2021-11-09 09:33:35,351 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 172 predicate places. [2021-11-09 09:33:35,351 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 206 transitions, 1485 flow [2021-11-09 09:33:35,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,351 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:35,351 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:35,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-09 09:33:35,352 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:35,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:35,352 INFO L85 PathProgramCache]: Analyzing trace with hash 683463240, now seen corresponding path program 35 times [2021-11-09 09:33:35,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:35,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156717697] [2021-11-09 09:33:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:35,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:35,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:35,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156717697] [2021-11-09 09:33:35,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156717697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:35,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:35,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:35,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932451341] [2021-11-09 09:33:35,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:35,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:35,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:35,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 206 transitions, 1485 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:35,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:35,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:36,123 INFO L129 PetriNetUnfolder]: 233/1285 cut-off events. [2021-11-09 09:33:36,124 INFO L130 PetriNetUnfolder]: For 8384/8438 co-relation queries the response was YES. [2021-11-09 09:33:36,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5140 conditions, 1285 events. 233/1285 cut-off events. For 8384/8438 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9506 event pairs, 160 based on Foata normal form. 1/1240 useless extension candidates. Maximal degree in co-relation 5035. Up to 571 conditions per place. [2021-11-09 09:33:36,145 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 54 selfloop transitions, 2 changer transitions 36/220 dead transitions. [2021-11-09 09:33:36,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 220 transitions, 1840 flow [2021-11-09 09:33:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:33:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:33:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2129 transitions. [2021-11-09 09:33:36,154 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7371883656509696 [2021-11-09 09:33:36,154 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2129 transitions. [2021-11-09 09:33:36,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2129 transitions. [2021-11-09 09:33:36,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:36,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2129 transitions. [2021-11-09 09:33:36,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.05263157894737) internal successors, (2129), 19 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:36,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:36,162 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:36,162 INFO L186 Difference]: Start difference. First operand has 308 places, 206 transitions, 1485 flow. Second operand 19 states and 2129 transitions. [2021-11-09 09:33:36,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 220 transitions, 1840 flow [2021-11-09 09:33:36,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 220 transitions, 1732 flow, removed 22 selfloop flow, removed 22 redundant places. [2021-11-09 09:33:36,226 INFO L242 Difference]: Finished difference. Result has 290 places, 179 transitions, 1072 flow [2021-11-09 09:33:36,227 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1072, PETRI_PLACES=290, PETRI_TRANSITIONS=179} [2021-11-09 09:33:36,227 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 154 predicate places. [2021-11-09 09:33:36,227 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 179 transitions, 1072 flow [2021-11-09 09:33:36,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:36,227 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:36,227 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:36,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-09 09:33:36,228 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash 453423764, now seen corresponding path program 1 times [2021-11-09 09:33:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:36,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777083208] [2021-11-09 09:33:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:36,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:36,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:36,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777083208] [2021-11-09 09:33:36,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777083208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:36,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:36,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:36,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209150370] [2021-11-09 09:33:36,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:36,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:36,372 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:36,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 179 transitions, 1072 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:36,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:36,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:36,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:37,258 INFO L129 PetriNetUnfolder]: 262/1371 cut-off events. [2021-11-09 09:33:37,258 INFO L130 PetriNetUnfolder]: For 8577/8634 co-relation queries the response was YES. [2021-11-09 09:33:37,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 1371 events. 262/1371 cut-off events. For 8577/8634 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10313 event pairs, 173 based on Foata normal form. 7/1326 useless extension candidates. Maximal degree in co-relation 5088. Up to 548 conditions per place. [2021-11-09 09:33:37,285 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 7 changer transitions 42/277 dead transitions. [2021-11-09 09:33:37,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 277 transitions, 2151 flow [2021-11-09 09:33:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:33:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-09 09:33:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3480 transitions. [2021-11-09 09:33:37,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7385398981324278 [2021-11-09 09:33:37,288 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3480 transitions. [2021-11-09 09:33:37,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3480 transitions. [2021-11-09 09:33:37,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:37,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3480 transitions. [2021-11-09 09:33:37,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 112.25806451612904) internal successors, (3480), 31 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:37,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:37,295 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:37,295 INFO L186 Difference]: Start difference. First operand has 290 places, 179 transitions, 1072 flow. Second operand 31 states and 3480 transitions. [2021-11-09 09:33:37,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 277 transitions, 2151 flow [2021-11-09 09:33:37,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 277 transitions, 2065 flow, removed 28 selfloop flow, removed 27 redundant places. [2021-11-09 09:33:37,344 INFO L242 Difference]: Finished difference. Result has 284 places, 185 transitions, 1183 flow [2021-11-09 09:33:37,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1183, PETRI_PLACES=284, PETRI_TRANSITIONS=185} [2021-11-09 09:33:37,344 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 148 predicate places. [2021-11-09 09:33:37,345 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 185 transitions, 1183 flow [2021-11-09 09:33:37,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:37,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:37,345 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:37,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-09 09:33:37,346 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:37,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1059598848, now seen corresponding path program 2 times [2021-11-09 09:33:37,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:37,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888696117] [2021-11-09 09:33:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:37,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:37,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:37,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888696117] [2021-11-09 09:33:37,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888696117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:37,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:37,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:37,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027579066] [2021-11-09 09:33:37,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:37,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:37,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:37,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:37,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 185 transitions, 1183 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:37,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:37,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:37,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:38,177 INFO L129 PetriNetUnfolder]: 260/1376 cut-off events. [2021-11-09 09:33:38,177 INFO L130 PetriNetUnfolder]: For 16180/16233 co-relation queries the response was YES. [2021-11-09 09:33:38,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6427 conditions, 1376 events. 260/1376 cut-off events. For 16180/16233 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10320 event pairs, 180 based on Foata normal form. 7/1329 useless extension candidates. Maximal degree in co-relation 6326. Up to 556 conditions per place. [2021-11-09 09:33:38,197 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 5 changer transitions 42/275 dead transitions. [2021-11-09 09:33:38,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 275 transitions, 2664 flow [2021-11-09 09:33:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:33:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-09 09:33:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3364 transitions. [2021-11-09 09:33:38,203 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.737719298245614 [2021-11-09 09:33:38,203 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3364 transitions. [2021-11-09 09:33:38,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3364 transitions. [2021-11-09 09:33:38,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:38,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3364 transitions. [2021-11-09 09:33:38,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.13333333333334) internal successors, (3364), 30 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:38,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:38,214 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:38,214 INFO L186 Difference]: Start difference. First operand has 284 places, 185 transitions, 1183 flow. Second operand 30 states and 3364 transitions. [2021-11-09 09:33:38,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 275 transitions, 2664 flow [2021-11-09 09:33:38,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 275 transitions, 2206 flow, removed 226 selfloop flow, removed 15 redundant places. [2021-11-09 09:33:38,308 INFO L242 Difference]: Finished difference. Result has 304 places, 189 transitions, 1267 flow [2021-11-09 09:33:38,308 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1267, PETRI_PLACES=304, PETRI_TRANSITIONS=189} [2021-11-09 09:33:38,308 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 168 predicate places. [2021-11-09 09:33:38,308 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 189 transitions, 1267 flow [2021-11-09 09:33:38,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:38,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:38,309 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:38,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-09 09:33:38,309 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 668467130, now seen corresponding path program 3 times [2021-11-09 09:33:38,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:38,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685721473] [2021-11-09 09:33:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:38,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:38,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:38,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685721473] [2021-11-09 09:33:38,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685721473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:38,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:38,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:38,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793638214] [2021-11-09 09:33:38,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:38,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:38,444 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:38,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 189 transitions, 1267 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:38,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:38,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:38,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:39,398 INFO L129 PetriNetUnfolder]: 269/1428 cut-off events. [2021-11-09 09:33:39,398 INFO L130 PetriNetUnfolder]: For 16863/16919 co-relation queries the response was YES. [2021-11-09 09:33:39,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6759 conditions, 1428 events. 269/1428 cut-off events. For 16863/16919 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10839 event pairs, 177 based on Foata normal form. 9/1387 useless extension candidates. Maximal degree in co-relation 6644. Up to 573 conditions per place. [2021-11-09 09:33:39,420 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 82 selfloop transitions, 16 changer transitions 35/262 dead transitions. [2021-11-09 09:33:39,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 262 transitions, 2617 flow [2021-11-09 09:33:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:33:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-09 09:33:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3137 transitions. [2021-11-09 09:33:39,423 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7370770676691729 [2021-11-09 09:33:39,423 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3137 transitions. [2021-11-09 09:33:39,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3137 transitions. [2021-11-09 09:33:39,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:39,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3137 transitions. [2021-11-09 09:33:39,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 112.03571428571429) internal successors, (3137), 28 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:39,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:39,429 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:39,429 INFO L186 Difference]: Start difference. First operand has 304 places, 189 transitions, 1267 flow. Second operand 28 states and 3137 transitions. [2021-11-09 09:33:39,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 262 transitions, 2617 flow [2021-11-09 09:33:39,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 262 transitions, 2145 flow, removed 234 selfloop flow, removed 20 redundant places. [2021-11-09 09:33:39,535 INFO L242 Difference]: Finished difference. Result has 305 places, 202 transitions, 1437 flow [2021-11-09 09:33:39,535 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1437, PETRI_PLACES=305, PETRI_TRANSITIONS=202} [2021-11-09 09:33:39,535 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 169 predicate places. [2021-11-09 09:33:39,535 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 202 transitions, 1437 flow [2021-11-09 09:33:39,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:39,536 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:39,536 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:39,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-09 09:33:39,536 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -628820430, now seen corresponding path program 4 times [2021-11-09 09:33:39,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:39,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34564026] [2021-11-09 09:33:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:39,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:39,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:39,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34564026] [2021-11-09 09:33:39,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34564026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:39,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:39,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:39,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205036328] [2021-11-09 09:33:39,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:39,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:39,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:39,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 202 transitions, 1437 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:39,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:39,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:39,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:40,696 INFO L129 PetriNetUnfolder]: 285/1464 cut-off events. [2021-11-09 09:33:40,696 INFO L130 PetriNetUnfolder]: For 13534/13599 co-relation queries the response was YES. [2021-11-09 09:33:40,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6706 conditions, 1464 events. 285/1464 cut-off events. For 13534/13599 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11160 event pairs, 183 based on Foata normal form. 8/1422 useless extension candidates. Maximal degree in co-relation 6593. Up to 580 conditions per place. [2021-11-09 09:33:40,739 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 86 selfloop transitions, 22 changer transitions 35/272 dead transitions. [2021-11-09 09:33:40,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 272 transitions, 2717 flow [2021-11-09 09:33:40,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:33:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-09 09:33:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3031 transitions. [2021-11-09 09:33:40,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7385477582846004 [2021-11-09 09:33:40,745 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3031 transitions. [2021-11-09 09:33:40,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3031 transitions. [2021-11-09 09:33:40,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:40,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3031 transitions. [2021-11-09 09:33:40,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.25925925925925) internal successors, (3031), 27 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:40,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:40,755 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:40,756 INFO L186 Difference]: Start difference. First operand has 305 places, 202 transitions, 1437 flow. Second operand 27 states and 3031 transitions. [2021-11-09 09:33:40,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 272 transitions, 2717 flow [2021-11-09 09:33:40,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 272 transitions, 2325 flow, removed 196 selfloop flow, removed 15 redundant places. [2021-11-09 09:33:40,894 INFO L242 Difference]: Finished difference. Result has 319 places, 214 transitions, 1588 flow [2021-11-09 09:33:40,894 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1588, PETRI_PLACES=319, PETRI_TRANSITIONS=214} [2021-11-09 09:33:40,894 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 183 predicate places. [2021-11-09 09:33:40,894 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 214 transitions, 1588 flow [2021-11-09 09:33:40,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:40,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:40,895 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:40,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-09 09:33:40,896 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1943161292, now seen corresponding path program 5 times [2021-11-09 09:33:40,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:40,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769380456] [2021-11-09 09:33:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:40,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:41,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:41,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769380456] [2021-11-09 09:33:41,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769380456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:41,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:41,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:41,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743318413] [2021-11-09 09:33:41,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:41,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:41,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:41,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 214 transitions, 1588 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:41,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:41,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:41,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:41,817 INFO L129 PetriNetUnfolder]: 285/1468 cut-off events. [2021-11-09 09:33:41,817 INFO L130 PetriNetUnfolder]: For 13420/13487 co-relation queries the response was YES. [2021-11-09 09:33:41,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 1468 events. 285/1468 cut-off events. For 13420/13487 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11218 event pairs, 182 based on Foata normal form. 13/1431 useless extension candidates. Maximal degree in co-relation 6668. Up to 586 conditions per place. [2021-11-09 09:33:41,839 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 88 selfloop transitions, 24 changer transitions 38/279 dead transitions. [2021-11-09 09:33:41,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 279 transitions, 2852 flow [2021-11-09 09:33:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:33:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:33:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2479 transitions. [2021-11-09 09:33:41,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7413277511961722 [2021-11-09 09:33:41,842 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2479 transitions. [2021-11-09 09:33:41,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2479 transitions. [2021-11-09 09:33:41,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:41,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2479 transitions. [2021-11-09 09:33:41,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.68181818181819) internal successors, (2479), 22 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:41,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:41,851 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:41,851 INFO L186 Difference]: Start difference. First operand has 319 places, 214 transitions, 1588 flow. Second operand 22 states and 2479 transitions. [2021-11-09 09:33:41,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 279 transitions, 2852 flow [2021-11-09 09:33:42,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 279 transitions, 2602 flow, removed 122 selfloop flow, removed 14 redundant places. [2021-11-09 09:33:42,013 INFO L242 Difference]: Finished difference. Result has 324 places, 221 transitions, 1730 flow [2021-11-09 09:33:42,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1730, PETRI_PLACES=324, PETRI_TRANSITIONS=221} [2021-11-09 09:33:42,013 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 188 predicate places. [2021-11-09 09:33:42,014 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 221 transitions, 1730 flow [2021-11-09 09:33:42,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:42,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:42,014 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:42,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-09 09:33:42,014 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:42,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1535643112, now seen corresponding path program 6 times [2021-11-09 09:33:42,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:42,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811589429] [2021-11-09 09:33:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:42,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:42,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:42,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811589429] [2021-11-09 09:33:42,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811589429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:42,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:42,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:42,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962675332] [2021-11-09 09:33:42,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:42,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:42,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:42,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 221 transitions, 1730 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:42,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:42,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:42,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:43,112 INFO L129 PetriNetUnfolder]: 304/1535 cut-off events. [2021-11-09 09:33:43,112 INFO L130 PetriNetUnfolder]: For 14328/14384 co-relation queries the response was YES. [2021-11-09 09:33:43,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1535 events. 304/1535 cut-off events. For 14328/14384 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11792 event pairs, 199 based on Foata normal form. 8/1492 useless extension candidates. Maximal degree in co-relation 7114. Up to 586 conditions per place. [2021-11-09 09:33:43,150 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 28 changer transitions 35/291 dead transitions. [2021-11-09 09:33:43,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 291 transitions, 3094 flow [2021-11-09 09:33:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:33:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:33:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2924 transitions. [2021-11-09 09:33:43,156 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398785425101214 [2021-11-09 09:33:43,156 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2924 transitions. [2021-11-09 09:33:43,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2924 transitions. [2021-11-09 09:33:43,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:43,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2924 transitions. [2021-11-09 09:33:43,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.46153846153847) internal successors, (2924), 26 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:43,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:43,166 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:43,166 INFO L186 Difference]: Start difference. First operand has 324 places, 221 transitions, 1730 flow. Second operand 26 states and 2924 transitions. [2021-11-09 09:33:43,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 291 transitions, 3094 flow [2021-11-09 09:33:43,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 291 transitions, 2831 flow, removed 108 selfloop flow, removed 15 redundant places. [2021-11-09 09:33:43,325 INFO L242 Difference]: Finished difference. Result has 343 places, 235 transitions, 1985 flow [2021-11-09 09:33:43,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1985, PETRI_PLACES=343, PETRI_TRANSITIONS=235} [2021-11-09 09:33:43,326 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-09 09:33:43,326 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 235 transitions, 1985 flow [2021-11-09 09:33:43,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:43,326 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:43,327 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:43,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-09 09:33:43,327 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash 720035066, now seen corresponding path program 7 times [2021-11-09 09:33:43,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:43,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509332807] [2021-11-09 09:33:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:43,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:43,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:43,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509332807] [2021-11-09 09:33:43,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509332807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:43,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:43,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:43,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318225007] [2021-11-09 09:33:43,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:43,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:43,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:43,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:43,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 235 transitions, 1985 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:43,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:43,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:43,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:44,313 INFO L129 PetriNetUnfolder]: 300/1554 cut-off events. [2021-11-09 09:33:44,313 INFO L130 PetriNetUnfolder]: For 15795/15853 co-relation queries the response was YES. [2021-11-09 09:33:44,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 1554 events. 300/1554 cut-off events. For 15795/15853 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12065 event pairs, 209 based on Foata normal form. 8/1510 useless extension candidates. Maximal degree in co-relation 7343. Up to 612 conditions per place. [2021-11-09 09:33:44,335 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 98 selfloop transitions, 36 changer transitions 35/298 dead transitions. [2021-11-09 09:33:44,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 298 transitions, 3471 flow [2021-11-09 09:33:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:33:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-09 09:33:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2810 transitions. [2021-11-09 09:33:44,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7394736842105263 [2021-11-09 09:33:44,338 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2810 transitions. [2021-11-09 09:33:44,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2810 transitions. [2021-11-09 09:33:44,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:44,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2810 transitions. [2021-11-09 09:33:44,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 112.4) internal successors, (2810), 25 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:44,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:44,346 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:44,346 INFO L186 Difference]: Start difference. First operand has 343 places, 235 transitions, 1985 flow. Second operand 25 states and 2810 transitions. [2021-11-09 09:33:44,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 298 transitions, 3471 flow [2021-11-09 09:33:44,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 298 transitions, 3158 flow, removed 151 selfloop flow, removed 14 redundant places. [2021-11-09 09:33:44,444 INFO L242 Difference]: Finished difference. Result has 359 places, 246 transitions, 2235 flow [2021-11-09 09:33:44,445 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2235, PETRI_PLACES=359, PETRI_TRANSITIONS=246} [2021-11-09 09:33:44,445 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 223 predicate places. [2021-11-09 09:33:44,445 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 246 transitions, 2235 flow [2021-11-09 09:33:44,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:44,446 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:44,446 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:44,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-09 09:33:44,446 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash -272986300, now seen corresponding path program 8 times [2021-11-09 09:33:44,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:44,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370718661] [2021-11-09 09:33:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:44,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:44,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:44,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370718661] [2021-11-09 09:33:44,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370718661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:44,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:44,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:44,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507480283] [2021-11-09 09:33:44,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:44,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:44,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:44,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:44,579 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:44,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 246 transitions, 2235 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:44,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:44,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:44,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:45,332 INFO L129 PetriNetUnfolder]: 304/1549 cut-off events. [2021-11-09 09:33:45,332 INFO L130 PetriNetUnfolder]: For 17147/17216 co-relation queries the response was YES. [2021-11-09 09:33:45,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 1549 events. 304/1549 cut-off events. For 17147/17216 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12013 event pairs, 192 based on Foata normal form. 8/1506 useless extension candidates. Maximal degree in co-relation 7549. Up to 591 conditions per place. [2021-11-09 09:33:45,356 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 117 selfloop transitions, 36 changer transitions 46/328 dead transitions. [2021-11-09 09:33:45,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 328 transitions, 3915 flow [2021-11-09 09:33:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:33:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:33:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2922 transitions. [2021-11-09 09:33:45,358 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7393724696356275 [2021-11-09 09:33:45,358 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2922 transitions. [2021-11-09 09:33:45,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2922 transitions. [2021-11-09 09:33:45,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:45,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2922 transitions. [2021-11-09 09:33:45,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.38461538461539) internal successors, (2922), 26 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:45,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:45,367 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:45,367 INFO L186 Difference]: Start difference. First operand has 359 places, 246 transitions, 2235 flow. Second operand 26 states and 2922 transitions. [2021-11-09 09:33:45,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 328 transitions, 3915 flow [2021-11-09 09:33:45,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 328 transitions, 3656 flow, removed 112 selfloop flow, removed 13 redundant places. [2021-11-09 09:33:45,526 INFO L242 Difference]: Finished difference. Result has 377 places, 255 transitions, 2408 flow [2021-11-09 09:33:45,526 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2408, PETRI_PLACES=377, PETRI_TRANSITIONS=255} [2021-11-09 09:33:45,527 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 241 predicate places. [2021-11-09 09:33:45,527 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 255 transitions, 2408 flow [2021-11-09 09:33:45,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:45,527 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:45,527 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:45,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-09 09:33:45,527 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1079870868, now seen corresponding path program 9 times [2021-11-09 09:33:45,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:45,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853219117] [2021-11-09 09:33:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:45,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:45,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:45,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853219117] [2021-11-09 09:33:45,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853219117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:45,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:45,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:45,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123746282] [2021-11-09 09:33:45,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:45,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:45,674 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:45,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 255 transitions, 2408 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:45,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:45,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:45,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:46,578 INFO L129 PetriNetUnfolder]: 295/1529 cut-off events. [2021-11-09 09:33:46,578 INFO L130 PetriNetUnfolder]: For 16340/16409 co-relation queries the response was YES. [2021-11-09 09:33:46,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 1529 events. 295/1529 cut-off events. For 16340/16409 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11855 event pairs, 186 based on Foata normal form. 16/1495 useless extension candidates. Maximal degree in co-relation 7332. Up to 588 conditions per place. [2021-11-09 09:33:46,607 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 109 selfloop transitions, 45 changer transitions 30/313 dead transitions. [2021-11-09 09:33:46,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 313 transitions, 3773 flow [2021-11-09 09:33:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:33:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:33:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2474 transitions. [2021-11-09 09:33:46,609 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398325358851675 [2021-11-09 09:33:46,609 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2474 transitions. [2021-11-09 09:33:46,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2474 transitions. [2021-11-09 09:33:46,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:46,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2474 transitions. [2021-11-09 09:33:46,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.45454545454545) internal successors, (2474), 22 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:46,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:46,615 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:46,615 INFO L186 Difference]: Start difference. First operand has 377 places, 255 transitions, 2408 flow. Second operand 22 states and 2474 transitions. [2021-11-09 09:33:46,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 313 transitions, 3773 flow [2021-11-09 09:33:46,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 313 transitions, 3508 flow, removed 90 selfloop flow, removed 23 redundant places. [2021-11-09 09:33:46,772 INFO L242 Difference]: Finished difference. Result has 368 places, 262 transitions, 2535 flow [2021-11-09 09:33:46,773 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2535, PETRI_PLACES=368, PETRI_TRANSITIONS=262} [2021-11-09 09:33:46,774 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 232 predicate places. [2021-11-09 09:33:46,774 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 262 transitions, 2535 flow [2021-11-09 09:33:46,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:46,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:46,775 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:46,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-09 09:33:46,775 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:46,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2004386980, now seen corresponding path program 10 times [2021-11-09 09:33:46,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:46,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529391795] [2021-11-09 09:33:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:46,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:46,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:46,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529391795] [2021-11-09 09:33:46,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529391795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:46,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:46,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:46,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395352174] [2021-11-09 09:33:46,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:46,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:46,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:46,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 262 transitions, 2535 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:46,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:46,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:46,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:47,825 INFO L129 PetriNetUnfolder]: 285/1510 cut-off events. [2021-11-09 09:33:47,826 INFO L130 PetriNetUnfolder]: For 14802/14864 co-relation queries the response was YES. [2021-11-09 09:33:47,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 1510 events. 285/1510 cut-off events. For 14802/14864 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11755 event pairs, 186 based on Foata normal form. 12/1472 useless extension candidates. Maximal degree in co-relation 7153. Up to 586 conditions per place. [2021-11-09 09:33:47,873 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 104 selfloop transitions, 29 changer transitions 36/298 dead transitions. [2021-11-09 09:33:47,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 298 transitions, 3434 flow [2021-11-09 09:33:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:33:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-09 09:33:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2033 transitions. [2021-11-09 09:33:47,879 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7430555555555556 [2021-11-09 09:33:47,879 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2033 transitions. [2021-11-09 09:33:47,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2033 transitions. [2021-11-09 09:33:47,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:47,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2033 transitions. [2021-11-09 09:33:47,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.94444444444444) internal successors, (2033), 18 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:47,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:47,887 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:47,888 INFO L186 Difference]: Start difference. First operand has 368 places, 262 transitions, 2535 flow. Second operand 18 states and 2033 transitions. [2021-11-09 09:33:47,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 298 transitions, 3434 flow [2021-11-09 09:33:48,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 298 transitions, 3318 flow, removed 45 selfloop flow, removed 7 redundant places. [2021-11-09 09:33:48,118 INFO L242 Difference]: Finished difference. Result has 372 places, 242 transitions, 2178 flow [2021-11-09 09:33:48,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2178, PETRI_PLACES=372, PETRI_TRANSITIONS=242} [2021-11-09 09:33:48,119 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 236 predicate places. [2021-11-09 09:33:48,119 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 242 transitions, 2178 flow [2021-11-09 09:33:48,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:48,120 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:48,120 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:48,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-09 09:33:48,121 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:48,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1042292998, now seen corresponding path program 11 times [2021-11-09 09:33:48,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:48,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643147947] [2021-11-09 09:33:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:48,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:48,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:48,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643147947] [2021-11-09 09:33:48,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643147947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:48,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:48,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:48,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604494163] [2021-11-09 09:33:48,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:48,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:48,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:48,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 242 transitions, 2178 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:48,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:48,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:48,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:49,143 INFO L129 PetriNetUnfolder]: 290/1516 cut-off events. [2021-11-09 09:33:49,144 INFO L130 PetriNetUnfolder]: For 14951/15016 co-relation queries the response was YES. [2021-11-09 09:33:49,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7305 conditions, 1516 events. 290/1516 cut-off events. For 14951/15016 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11695 event pairs, 191 based on Foata normal form. 12/1478 useless extension candidates. Maximal degree in co-relation 7165. Up to 585 conditions per place. [2021-11-09 09:33:49,173 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 36 changer transitions 28/292 dead transitions. [2021-11-09 09:33:49,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 292 transitions, 3295 flow [2021-11-09 09:33:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2257 transitions. [2021-11-09 09:33:49,175 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7424342105263158 [2021-11-09 09:33:49,175 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2257 transitions. [2021-11-09 09:33:49,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2257 transitions. [2021-11-09 09:33:49,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:49,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2257 transitions. [2021-11-09 09:33:49,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.85) internal successors, (2257), 20 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,180 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,180 INFO L186 Difference]: Start difference. First operand has 372 places, 242 transitions, 2178 flow. Second operand 20 states and 2257 transitions. [2021-11-09 09:33:49,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 292 transitions, 3295 flow [2021-11-09 09:33:49,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 292 transitions, 3053 flow, removed 35 selfloop flow, removed 20 redundant places. [2021-11-09 09:33:49,309 INFO L242 Difference]: Finished difference. Result has 356 places, 251 transitions, 2295 flow [2021-11-09 09:33:49,310 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2295, PETRI_PLACES=356, PETRI_TRANSITIONS=251} [2021-11-09 09:33:49,310 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 220 predicate places. [2021-11-09 09:33:49,310 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 251 transitions, 2295 flow [2021-11-09 09:33:49,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,311 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:49,311 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:49,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-09 09:33:49,312 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:49,312 INFO L85 PathProgramCache]: Analyzing trace with hash 460115714, now seen corresponding path program 12 times [2021-11-09 09:33:49,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:49,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873637197] [2021-11-09 09:33:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:49,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:49,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:49,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873637197] [2021-11-09 09:33:49,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873637197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:49,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:49,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:49,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670029107] [2021-11-09 09:33:49,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:49,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:49,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:49,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 251 transitions, 2295 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:49,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:49,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:50,380 INFO L129 PetriNetUnfolder]: 285/1505 cut-off events. [2021-11-09 09:33:50,381 INFO L130 PetriNetUnfolder]: For 14131/14193 co-relation queries the response was YES. [2021-11-09 09:33:50,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7168 conditions, 1505 events. 285/1505 cut-off events. For 14131/14193 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11666 event pairs, 187 based on Foata normal form. 12/1467 useless extension candidates. Maximal degree in co-relation 7032. Up to 585 conditions per place. [2021-11-09 09:33:50,414 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 100 selfloop transitions, 37 changer transitions 29/295 dead transitions. [2021-11-09 09:33:50,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 295 transitions, 3289 flow [2021-11-09 09:33:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:33:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:33:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2148 transitions. [2021-11-09 09:33:50,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7437673130193906 [2021-11-09 09:33:50,416 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2148 transitions. [2021-11-09 09:33:50,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2148 transitions. [2021-11-09 09:33:50,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:50,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2148 transitions. [2021-11-09 09:33:50,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 113.05263157894737) internal successors, (2148), 19 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:50,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:50,420 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:50,421 INFO L186 Difference]: Start difference. First operand has 356 places, 251 transitions, 2295 flow. Second operand 19 states and 2148 transitions. [2021-11-09 09:33:50,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 295 transitions, 3289 flow [2021-11-09 09:33:50,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 295 transitions, 3184 flow, removed 32 selfloop flow, removed 6 redundant places. [2021-11-09 09:33:50,550 INFO L242 Difference]: Finished difference. Result has 367 places, 254 transitions, 2388 flow [2021-11-09 09:33:50,551 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2388, PETRI_PLACES=367, PETRI_TRANSITIONS=254} [2021-11-09 09:33:50,551 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 231 predicate places. [2021-11-09 09:33:50,551 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 254 transitions, 2388 flow [2021-11-09 09:33:50,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:50,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:50,551 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:50,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-09 09:33:50,552 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:50,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1747494484, now seen corresponding path program 13 times [2021-11-09 09:33:50,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:50,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294571276] [2021-11-09 09:33:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:50,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:50,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:50,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294571276] [2021-11-09 09:33:50,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294571276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:50,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:50,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:50,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191263037] [2021-11-09 09:33:50,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:50,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:50,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:50,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 254 transitions, 2388 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:50,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:50,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:50,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:51,630 INFO L129 PetriNetUnfolder]: 281/1480 cut-off events. [2021-11-09 09:33:51,631 INFO L130 PetriNetUnfolder]: For 14035/14100 co-relation queries the response was YES. [2021-11-09 09:33:51,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 1480 events. 281/1480 cut-off events. For 14035/14100 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11375 event pairs, 187 based on Foata normal form. 13/1443 useless extension candidates. Maximal degree in co-relation 6905. Up to 584 conditions per place. [2021-11-09 09:33:51,675 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 100 selfloop transitions, 27 changer transitions 37/293 dead transitions. [2021-11-09 09:33:51,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 293 transitions, 3273 flow [2021-11-09 09:33:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:33:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-09 09:33:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2364 transitions. [2021-11-09 09:33:51,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7406015037593985 [2021-11-09 09:33:51,679 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2364 transitions. [2021-11-09 09:33:51,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2364 transitions. [2021-11-09 09:33:51,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:51,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2364 transitions. [2021-11-09 09:33:51,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.57142857142857) internal successors, (2364), 21 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:51,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:51,687 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:51,688 INFO L186 Difference]: Start difference. First operand has 367 places, 254 transitions, 2388 flow. Second operand 21 states and 2364 transitions. [2021-11-09 09:33:51,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 293 transitions, 3273 flow [2021-11-09 09:33:51,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 293 transitions, 3142 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-11-09 09:33:51,826 INFO L242 Difference]: Finished difference. Result has 379 places, 245 transitions, 2187 flow [2021-11-09 09:33:51,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2187, PETRI_PLACES=379, PETRI_TRANSITIONS=245} [2021-11-09 09:33:51,826 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 243 predicate places. [2021-11-09 09:33:51,826 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 245 transitions, 2187 flow [2021-11-09 09:33:51,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:51,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:51,827 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:51,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-09 09:33:51,827 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1036068676, now seen corresponding path program 14 times [2021-11-09 09:33:51,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:51,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922885630] [2021-11-09 09:33:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:51,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:51,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:51,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922885630] [2021-11-09 09:33:51,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922885630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:51,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:51,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:51,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110406782] [2021-11-09 09:33:51,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:51,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:52,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:52,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 245 transitions, 2187 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:52,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:52,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:52,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:52,866 INFO L129 PetriNetUnfolder]: 268/1452 cut-off events. [2021-11-09 09:33:52,866 INFO L130 PetriNetUnfolder]: For 13583/13645 co-relation queries the response was YES. [2021-11-09 09:33:52,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6761 conditions, 1452 events. 268/1452 cut-off events. For 13583/13645 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11186 event pairs, 188 based on Foata normal form. 12/1414 useless extension candidates. Maximal degree in co-relation 6616. Up to 579 conditions per place. [2021-11-09 09:33:52,895 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 90 selfloop transitions, 14 changer transitions 38/271 dead transitions. [2021-11-09 09:33:52,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 271 transitions, 2828 flow [2021-11-09 09:33:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:33:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:33:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2464 transitions. [2021-11-09 09:33:52,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2021-11-09 09:33:52,898 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2464 transitions. [2021-11-09 09:33:52,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2464 transitions. [2021-11-09 09:33:52,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:52,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2464 transitions. [2021-11-09 09:33:52,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.0) internal successors, (2464), 22 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:52,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:52,903 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:52,903 INFO L186 Difference]: Start difference. First operand has 379 places, 245 transitions, 2187 flow. Second operand 22 states and 2464 transitions. [2021-11-09 09:33:52,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 271 transitions, 2828 flow [2021-11-09 09:33:53,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 271 transitions, 2653 flow, removed 33 selfloop flow, removed 26 redundant places. [2021-11-09 09:33:53,040 INFO L242 Difference]: Finished difference. Result has 362 places, 222 transitions, 1748 flow [2021-11-09 09:33:53,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1748, PETRI_PLACES=362, PETRI_TRANSITIONS=222} [2021-11-09 09:33:53,041 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 226 predicate places. [2021-11-09 09:33:53,041 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 222 transitions, 1748 flow [2021-11-09 09:33:53,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:53,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:53,042 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:53,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-09 09:33:53,042 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash 133398164, now seen corresponding path program 15 times [2021-11-09 09:33:53,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:53,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327793874] [2021-11-09 09:33:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:53,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:53,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:53,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327793874] [2021-11-09 09:33:53,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327793874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:53,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:53,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:53,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378984357] [2021-11-09 09:33:53,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:53,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:53,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:53,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:53,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:53,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 222 transitions, 1748 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:53,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:53,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:53,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:54,130 INFO L129 PetriNetUnfolder]: 283/1487 cut-off events. [2021-11-09 09:33:54,130 INFO L130 PetriNetUnfolder]: For 13942/14004 co-relation queries the response was YES. [2021-11-09 09:33:54,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 1487 events. 283/1487 cut-off events. For 13942/14004 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11442 event pairs, 195 based on Foata normal form. 10/1446 useless extension candidates. Maximal degree in co-relation 6834. Up to 579 conditions per place. [2021-11-09 09:33:54,156 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 94 selfloop transitions, 26 changer transitions 33/282 dead transitions. [2021-11-09 09:33:54,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 282 transitions, 2948 flow [2021-11-09 09:33:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:33:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:33:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2702 transitions. [2021-11-09 09:33:54,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7406798245614035 [2021-11-09 09:33:54,159 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2702 transitions. [2021-11-09 09:33:54,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2702 transitions. [2021-11-09 09:33:54,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:54,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2702 transitions. [2021-11-09 09:33:54,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.58333333333333) internal successors, (2702), 24 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:54,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:54,165 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:54,165 INFO L186 Difference]: Start difference. First operand has 362 places, 222 transitions, 1748 flow. Second operand 24 states and 2702 transitions. [2021-11-09 09:33:54,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 282 transitions, 2948 flow [2021-11-09 09:33:54,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 282 transitions, 2693 flow, removed 47 selfloop flow, removed 23 redundant places. [2021-11-09 09:33:54,268 INFO L242 Difference]: Finished difference. Result has 344 places, 233 transitions, 1904 flow [2021-11-09 09:33:54,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1904, PETRI_PLACES=344, PETRI_TRANSITIONS=233} [2021-11-09 09:33:54,269 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 208 predicate places. [2021-11-09 09:33:54,269 INFO L470 AbstractCegarLoop]: Abstraction has has 344 places, 233 transitions, 1904 flow [2021-11-09 09:33:54,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:54,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:54,269 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:54,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-09 09:33:54,270 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash -518738374, now seen corresponding path program 16 times [2021-11-09 09:33:54,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:54,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593245036] [2021-11-09 09:33:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:54,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:54,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:54,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593245036] [2021-11-09 09:33:54,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593245036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:54,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:54,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:54,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192346206] [2021-11-09 09:33:54,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:54,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:54,434 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:54,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 233 transitions, 1904 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:54,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:54,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:54,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:55,263 INFO L129 PetriNetUnfolder]: 279/1476 cut-off events. [2021-11-09 09:33:55,263 INFO L130 PetriNetUnfolder]: For 12941/13003 co-relation queries the response was YES. [2021-11-09 09:33:55,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 1476 events. 279/1476 cut-off events. For 12941/13003 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11354 event pairs, 191 based on Foata normal form. 10/1435 useless extension candidates. Maximal degree in co-relation 6675. Up to 580 conditions per place. [2021-11-09 09:33:55,290 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 93 selfloop transitions, 28 changer transitions 34/284 dead transitions. [2021-11-09 09:33:55,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 284 transitions, 2963 flow [2021-11-09 09:33:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:33:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-09 09:33:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2591 transitions. [2021-11-09 09:33:55,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7411327231121282 [2021-11-09 09:33:55,293 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2591 transitions. [2021-11-09 09:33:55,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2591 transitions. [2021-11-09 09:33:55,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:55,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2591 transitions. [2021-11-09 09:33:55,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.65217391304348) internal successors, (2591), 23 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:55,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:55,298 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:55,298 INFO L186 Difference]: Start difference. First operand has 344 places, 233 transitions, 1904 flow. Second operand 23 states and 2591 transitions. [2021-11-09 09:33:55,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 284 transitions, 2963 flow [2021-11-09 09:33:55,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 284 transitions, 2828 flow, removed 62 selfloop flow, removed 11 redundant places. [2021-11-09 09:33:55,418 INFO L242 Difference]: Finished difference. Result has 356 places, 237 transitions, 2038 flow [2021-11-09 09:33:55,418 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2038, PETRI_PLACES=356, PETRI_TRANSITIONS=237} [2021-11-09 09:33:55,419 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 220 predicate places. [2021-11-09 09:33:55,419 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 237 transitions, 2038 flow [2021-11-09 09:33:55,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:55,420 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:55,420 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:55,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-09 09:33:55,420 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:55,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:55,421 INFO L85 PathProgramCache]: Analyzing trace with hash 706942482, now seen corresponding path program 17 times [2021-11-09 09:33:55,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:55,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283580898] [2021-11-09 09:33:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:55,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:55,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:55,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283580898] [2021-11-09 09:33:55,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283580898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:55,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:55,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:55,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239822660] [2021-11-09 09:33:55,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:55,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:55,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:55,581 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:55,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 237 transitions, 2038 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:55,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:55,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:55,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:56,305 INFO L129 PetriNetUnfolder]: 272/1465 cut-off events. [2021-11-09 09:33:56,305 INFO L130 PetriNetUnfolder]: For 12913/12975 co-relation queries the response was YES. [2021-11-09 09:33:56,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6747 conditions, 1465 events. 272/1465 cut-off events. For 12913/12975 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11278 event pairs, 191 based on Foata normal form. 10/1424 useless extension candidates. Maximal degree in co-relation 6606. Up to 580 conditions per place. [2021-11-09 09:33:56,333 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 92 selfloop transitions, 30 changer transitions 28/279 dead transitions. [2021-11-09 09:33:56,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 279 transitions, 2952 flow [2021-11-09 09:33:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2260 transitions. [2021-11-09 09:33:56,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2021-11-09 09:33:56,335 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2260 transitions. [2021-11-09 09:33:56,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2260 transitions. [2021-11-09 09:33:56,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:56,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2260 transitions. [2021-11-09 09:33:56,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 113.0) internal successors, (2260), 20 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:56,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:56,340 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:56,340 INFO L186 Difference]: Start difference. First operand has 356 places, 237 transitions, 2038 flow. Second operand 20 states and 2260 transitions. [2021-11-09 09:33:56,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 279 transitions, 2952 flow [2021-11-09 09:33:56,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 279 transitions, 2792 flow, removed 58 selfloop flow, removed 14 redundant places. [2021-11-09 09:33:56,513 INFO L242 Difference]: Finished difference. Result has 356 places, 244 transitions, 2160 flow [2021-11-09 09:33:56,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2160, PETRI_PLACES=356, PETRI_TRANSITIONS=244} [2021-11-09 09:33:56,514 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 220 predicate places. [2021-11-09 09:33:56,514 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 244 transitions, 2160 flow [2021-11-09 09:33:56,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:56,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:56,515 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:56,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-09 09:33:56,516 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2092074890, now seen corresponding path program 18 times [2021-11-09 09:33:56,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:56,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768060687] [2021-11-09 09:33:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:56,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:56,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:56,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768060687] [2021-11-09 09:33:56,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768060687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:56,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:56,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:56,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421142811] [2021-11-09 09:33:56,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:56,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:56,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:56,701 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:56,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 244 transitions, 2160 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:56,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:56,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:56,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:57,537 INFO L129 PetriNetUnfolder]: 277/1470 cut-off events. [2021-11-09 09:33:57,537 INFO L130 PetriNetUnfolder]: For 12801/12860 co-relation queries the response was YES. [2021-11-09 09:33:57,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 1470 events. 277/1470 cut-off events. For 12801/12860 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11277 event pairs, 196 based on Foata normal form. 8/1427 useless extension candidates. Maximal degree in co-relation 6662. Up to 579 conditions per place. [2021-11-09 09:33:57,564 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 92 selfloop transitions, 38 changer transitions 28/287 dead transitions. [2021-11-09 09:33:57,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 287 transitions, 3115 flow [2021-11-09 09:33:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:33:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:33:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2149 transitions. [2021-11-09 09:33:57,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7441135734072022 [2021-11-09 09:33:57,567 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2149 transitions. [2021-11-09 09:33:57,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2149 transitions. [2021-11-09 09:33:57,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:57,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2149 transitions. [2021-11-09 09:33:57,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 113.10526315789474) internal successors, (2149), 19 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:57,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:57,571 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:57,571 INFO L186 Difference]: Start difference. First operand has 356 places, 244 transitions, 2160 flow. Second operand 19 states and 2149 transitions. [2021-11-09 09:33:57,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 287 transitions, 3115 flow [2021-11-09 09:33:57,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 287 transitions, 2976 flow, removed 47 selfloop flow, removed 7 redundant places. [2021-11-09 09:33:57,686 INFO L242 Difference]: Finished difference. Result has 367 places, 252 transitions, 2332 flow [2021-11-09 09:33:57,686 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2332, PETRI_PLACES=367, PETRI_TRANSITIONS=252} [2021-11-09 09:33:57,687 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 231 predicate places. [2021-11-09 09:33:57,687 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 252 transitions, 2332 flow [2021-11-09 09:33:57,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:57,687 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:57,687 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:57,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-09 09:33:57,687 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash 222581462, now seen corresponding path program 19 times [2021-11-09 09:33:57,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:57,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321628943] [2021-11-09 09:33:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:57,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:57,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:57,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321628943] [2021-11-09 09:33:57,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321628943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:57,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:57,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:57,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80931955] [2021-11-09 09:33:57,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:57,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:57,849 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:57,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 252 transitions, 2332 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:57,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:57,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:57,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:58,613 INFO L129 PetriNetUnfolder]: 272/1456 cut-off events. [2021-11-09 09:33:58,613 INFO L130 PetriNetUnfolder]: For 12875/12936 co-relation queries the response was YES. [2021-11-09 09:33:58,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6819 conditions, 1456 events. 272/1456 cut-off events. For 12875/12936 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11180 event pairs, 184 based on Foata normal form. 10/1415 useless extension candidates. Maximal degree in co-relation 6675. Up to 579 conditions per place. [2021-11-09 09:33:58,640 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 34 changer transitions 29/291 dead transitions. [2021-11-09 09:33:58,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 291 transitions, 3241 flow [2021-11-09 09:33:58,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2260 transitions. [2021-11-09 09:33:58,642 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2021-11-09 09:33:58,642 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2260 transitions. [2021-11-09 09:33:58,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2260 transitions. [2021-11-09 09:33:58,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:58,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2260 transitions. [2021-11-09 09:33:58,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 113.0) internal successors, (2260), 20 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:58,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:58,647 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:58,647 INFO L186 Difference]: Start difference. First operand has 367 places, 252 transitions, 2332 flow. Second operand 20 states and 2260 transitions. [2021-11-09 09:33:58,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 291 transitions, 3241 flow [2021-11-09 09:33:58,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 291 transitions, 3111 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-11-09 09:33:58,768 INFO L242 Difference]: Finished difference. Result has 377 places, 256 transitions, 2423 flow [2021-11-09 09:33:58,769 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2423, PETRI_PLACES=377, PETRI_TRANSITIONS=256} [2021-11-09 09:33:58,769 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 241 predicate places. [2021-11-09 09:33:58,769 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 256 transitions, 2423 flow [2021-11-09 09:33:58,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:58,770 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:58,770 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:58,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-09 09:33:58,770 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:58,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1153909724, now seen corresponding path program 20 times [2021-11-09 09:33:58,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:58,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323219689] [2021-11-09 09:33:58,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:58,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:58,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:58,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323219689] [2021-11-09 09:33:58,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323219689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:58,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:58,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:58,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343446854] [2021-11-09 09:33:58,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:58,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:58,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:58,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:58,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 256 transitions, 2423 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:58,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:58,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:58,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:33:59,503 INFO L129 PetriNetUnfolder]: 263/1444 cut-off events. [2021-11-09 09:33:59,503 INFO L130 PetriNetUnfolder]: For 12573/12634 co-relation queries the response was YES. [2021-11-09 09:33:59,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 1444 events. 263/1444 cut-off events. For 12573/12634 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11115 event pairs, 186 based on Foata normal form. 10/1403 useless extension candidates. Maximal degree in co-relation 6510. Up to 579 conditions per place. [2021-11-09 09:33:59,526 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 95 selfloop transitions, 19 changer transitions 40/283 dead transitions. [2021-11-09 09:33:59,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 283 transitions, 3079 flow [2021-11-09 09:33:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:33:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:33:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2257 transitions. [2021-11-09 09:33:59,528 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7424342105263158 [2021-11-09 09:33:59,528 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2257 transitions. [2021-11-09 09:33:59,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2257 transitions. [2021-11-09 09:33:59,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:33:59,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2257 transitions. [2021-11-09 09:33:59,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.85) internal successors, (2257), 20 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,532 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,532 INFO L186 Difference]: Start difference. First operand has 377 places, 256 transitions, 2423 flow. Second operand 20 states and 2257 transitions. [2021-11-09 09:33:59,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 283 transitions, 3079 flow [2021-11-09 09:33:59,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 283 transitions, 2970 flow, removed 33 selfloop flow, removed 7 redundant places. [2021-11-09 09:33:59,642 INFO L242 Difference]: Finished difference. Result has 386 places, 239 transitions, 2079 flow [2021-11-09 09:33:59,642 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2079, PETRI_PLACES=386, PETRI_TRANSITIONS=239} [2021-11-09 09:33:59,642 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 250 predicate places. [2021-11-09 09:33:59,643 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 239 transitions, 2079 flow [2021-11-09 09:33:59,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,643 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:33:59,643 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:59,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-09 09:33:59,643 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:33:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1368031332, now seen corresponding path program 21 times [2021-11-09 09:33:59,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:59,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168316911] [2021-11-09 09:33:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:59,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:59,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:59,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168316911] [2021-11-09 09:33:59,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168316911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:59,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:59,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:33:59,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676412564] [2021-11-09 09:33:59,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:33:59,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:33:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:59,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:33:59,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 239 transitions, 2079 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:33:59,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:33:59,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:00,551 INFO L129 PetriNetUnfolder]: 259/1415 cut-off events. [2021-11-09 09:34:00,551 INFO L130 PetriNetUnfolder]: For 12219/12278 co-relation queries the response was YES. [2021-11-09 09:34:00,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6401 conditions, 1415 events. 259/1415 cut-off events. For 12219/12278 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10819 event pairs, 190 based on Foata normal form. 8/1372 useless extension candidates. Maximal degree in co-relation 6250. Up to 578 conditions per place. [2021-11-09 09:34:00,600 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 85 selfloop transitions, 20 changer transitions 36/270 dead transitions. [2021-11-09 09:34:00,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 270 transitions, 2793 flow [2021-11-09 09:34:00,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:34:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:34:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2473 transitions. [2021-11-09 09:34:00,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7395334928229665 [2021-11-09 09:34:00,604 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2473 transitions. [2021-11-09 09:34:00,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2473 transitions. [2021-11-09 09:34:00,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:00,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2473 transitions. [2021-11-09 09:34:00,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.4090909090909) internal successors, (2473), 22 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:00,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:00,614 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:00,614 INFO L186 Difference]: Start difference. First operand has 386 places, 239 transitions, 2079 flow. Second operand 22 states and 2473 transitions. [2021-11-09 09:34:00,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 270 transitions, 2793 flow [2021-11-09 09:34:00,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 270 transitions, 2571 flow, removed 35 selfloop flow, removed 27 redundant places. [2021-11-09 09:34:00,768 INFO L242 Difference]: Finished difference. Result has 366 places, 230 transitions, 1847 flow [2021-11-09 09:34:00,769 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1847, PETRI_PLACES=366, PETRI_TRANSITIONS=230} [2021-11-09 09:34:00,769 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 230 predicate places. [2021-11-09 09:34:00,769 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 230 transitions, 1847 flow [2021-11-09 09:34:00,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:00,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:00,769 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:00,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-09 09:34:00,770 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1352910168, now seen corresponding path program 22 times [2021-11-09 09:34:00,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:00,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820640688] [2021-11-09 09:34:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:00,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:00,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:00,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820640688] [2021-11-09 09:34:00,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820640688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:00,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:00,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:00,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127611673] [2021-11-09 09:34:00,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:00,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:00,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:00,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 230 transitions, 1847 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:00,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:00,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:00,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:01,665 INFO L129 PetriNetUnfolder]: 247/1366 cut-off events. [2021-11-09 09:34:01,666 INFO L130 PetriNetUnfolder]: For 11155/11214 co-relation queries the response was YES. [2021-11-09 09:34:01,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 1366 events. 247/1366 cut-off events. For 11155/11214 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10360 event pairs, 188 based on Foata normal form. 8/1323 useless extension candidates. Maximal degree in co-relation 5835. Up to 571 conditions per place. [2021-11-09 09:34:01,692 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 73 selfloop transitions, 4 changer transitions 41/247 dead transitions. [2021-11-09 09:34:01,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 247 transitions, 2269 flow [2021-11-09 09:34:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:34:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-09 09:34:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2352 transitions. [2021-11-09 09:34:01,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2021-11-09 09:34:01,694 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2352 transitions. [2021-11-09 09:34:01,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2352 transitions. [2021-11-09 09:34:01,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:01,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2352 transitions. [2021-11-09 09:34:01,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.0) internal successors, (2352), 21 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:01,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:01,699 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:01,700 INFO L186 Difference]: Start difference. First operand has 366 places, 230 transitions, 1847 flow. Second operand 21 states and 2352 transitions. [2021-11-09 09:34:01,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 247 transitions, 2269 flow [2021-11-09 09:34:01,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 247 transitions, 2146 flow, removed 29 selfloop flow, removed 23 redundant places. [2021-11-09 09:34:01,872 INFO L242 Difference]: Finished difference. Result has 348 places, 203 transitions, 1394 flow [2021-11-09 09:34:01,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1394, PETRI_PLACES=348, PETRI_TRANSITIONS=203} [2021-11-09 09:34:01,873 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 212 predicate places. [2021-11-09 09:34:01,873 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 203 transitions, 1394 flow [2021-11-09 09:34:01,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:01,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:01,874 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:01,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-09 09:34:01,875 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:01,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:01,876 INFO L85 PathProgramCache]: Analyzing trace with hash 976090950, now seen corresponding path program 23 times [2021-11-09 09:34:01,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:01,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698494883] [2021-11-09 09:34:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:01,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:02,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:02,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698494883] [2021-11-09 09:34:02,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698494883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:02,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:02,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:02,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981153041] [2021-11-09 09:34:02,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:02,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:02,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:02,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:02,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:02,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 203 transitions, 1394 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:02,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:02,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:02,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:03,025 INFO L129 PetriNetUnfolder]: 270/1448 cut-off events. [2021-11-09 09:34:03,025 INFO L130 PetriNetUnfolder]: For 11817/11876 co-relation queries the response was YES. [2021-11-09 09:34:03,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6373 conditions, 1448 events. 270/1448 cut-off events. For 11817/11876 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11075 event pairs, 190 based on Foata normal form. 8/1404 useless extension candidates. Maximal degree in co-relation 6242. Up to 590 conditions per place. [2021-11-09 09:34:03,052 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 86 selfloop transitions, 23 changer transitions 38/276 dead transitions. [2021-11-09 09:34:03,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 276 transitions, 2589 flow [2021-11-09 09:34:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:34:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-09 09:34:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3137 transitions. [2021-11-09 09:34:03,055 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7370770676691729 [2021-11-09 09:34:03,055 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3137 transitions. [2021-11-09 09:34:03,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3137 transitions. [2021-11-09 09:34:03,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:03,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3137 transitions. [2021-11-09 09:34:03,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 112.03571428571429) internal successors, (3137), 28 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,061 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,061 INFO L186 Difference]: Start difference. First operand has 348 places, 203 transitions, 1394 flow. Second operand 28 states and 3137 transitions. [2021-11-09 09:34:03,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 276 transitions, 2589 flow [2021-11-09 09:34:03,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 276 transitions, 2422 flow, removed 49 selfloop flow, removed 21 redundant places. [2021-11-09 09:34:03,169 INFO L242 Difference]: Finished difference. Result has 335 places, 216 transitions, 1594 flow [2021-11-09 09:34:03,170 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1594, PETRI_PLACES=335, PETRI_TRANSITIONS=216} [2021-11-09 09:34:03,170 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-09 09:34:03,170 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 216 transitions, 1594 flow [2021-11-09 09:34:03,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:03,171 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:03,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-09 09:34:03,171 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1812675720, now seen corresponding path program 24 times [2021-11-09 09:34:03,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:03,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255936246] [2021-11-09 09:34:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:03,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:03,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:03,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255936246] [2021-11-09 09:34:03,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255936246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:03,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:03,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:03,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898206576] [2021-11-09 09:34:03,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:03,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:03,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:03,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 216 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:03,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:03,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:04,269 INFO L129 PetriNetUnfolder]: 267/1431 cut-off events. [2021-11-09 09:34:04,270 INFO L130 PetriNetUnfolder]: For 11663/11719 co-relation queries the response was YES. [2021-11-09 09:34:04,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 1431 events. 267/1431 cut-off events. For 11663/11719 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10917 event pairs, 192 based on Foata normal form. 7/1385 useless extension candidates. Maximal degree in co-relation 6253. Up to 588 conditions per place. [2021-11-09 09:34:04,311 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 83 selfloop transitions, 25 changer transitions 39/276 dead transitions. [2021-11-09 09:34:04,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 276 transitions, 2712 flow [2021-11-09 09:34:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:34:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-09 09:34:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3026 transitions. [2021-11-09 09:34:04,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7373294346978557 [2021-11-09 09:34:04,316 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3026 transitions. [2021-11-09 09:34:04,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3026 transitions. [2021-11-09 09:34:04,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:04,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3026 transitions. [2021-11-09 09:34:04,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.07407407407408) internal successors, (3026), 27 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:04,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:04,324 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:04,324 INFO L186 Difference]: Start difference. First operand has 335 places, 216 transitions, 1594 flow. Second operand 27 states and 3026 transitions. [2021-11-09 09:34:04,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 276 transitions, 2712 flow [2021-11-09 09:34:04,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 276 transitions, 2536 flow, removed 72 selfloop flow, removed 18 redundant places. [2021-11-09 09:34:04,424 INFO L242 Difference]: Finished difference. Result has 345 places, 220 transitions, 1735 flow [2021-11-09 09:34:04,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1735, PETRI_PLACES=345, PETRI_TRANSITIONS=220} [2021-11-09 09:34:04,425 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 209 predicate places. [2021-11-09 09:34:04,425 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 220 transitions, 1735 flow [2021-11-09 09:34:04,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:04,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:04,426 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:04,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-09 09:34:04,426 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:04,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:04,426 INFO L85 PathProgramCache]: Analyzing trace with hash 115779430, now seen corresponding path program 25 times [2021-11-09 09:34:04,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:04,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365849645] [2021-11-09 09:34:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:04,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:04,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:04,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365849645] [2021-11-09 09:34:04,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365849645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:04,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:04,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:04,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004202130] [2021-11-09 09:34:04,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:04,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:04,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:04,577 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:04,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 220 transitions, 1735 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:04,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:04,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:04,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:05,364 INFO L129 PetriNetUnfolder]: 261/1404 cut-off events. [2021-11-09 09:34:05,365 INFO L130 PetriNetUnfolder]: For 12259/12315 co-relation queries the response was YES. [2021-11-09 09:34:05,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 1404 events. 261/1404 cut-off events. For 12259/12315 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10626 event pairs, 184 based on Foata normal form. 7/1359 useless extension candidates. Maximal degree in co-relation 6259. Up to 591 conditions per place. [2021-11-09 09:34:05,390 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 84 selfloop transitions, 27 changer transitions 33/273 dead transitions. [2021-11-09 09:34:05,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 273 transitions, 2809 flow [2021-11-09 09:34:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:34:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:34:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2695 transitions. [2021-11-09 09:34:05,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7387609649122807 [2021-11-09 09:34:05,393 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2695 transitions. [2021-11-09 09:34:05,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2695 transitions. [2021-11-09 09:34:05,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:05,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2695 transitions. [2021-11-09 09:34:05,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.29166666666667) internal successors, (2695), 24 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:05,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:05,400 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:05,400 INFO L186 Difference]: Start difference. First operand has 345 places, 220 transitions, 1735 flow. Second operand 24 states and 2695 transitions. [2021-11-09 09:34:05,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 273 transitions, 2809 flow [2021-11-09 09:34:05,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 273 transitions, 2595 flow, removed 88 selfloop flow, removed 20 redundant places. [2021-11-09 09:34:05,518 INFO L242 Difference]: Finished difference. Result has 344 places, 227 transitions, 1868 flow [2021-11-09 09:34:05,519 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1868, PETRI_PLACES=344, PETRI_TRANSITIONS=227} [2021-11-09 09:34:05,519 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 208 predicate places. [2021-11-09 09:34:05,519 INFO L470 AbstractCegarLoop]: Abstraction has has 344 places, 227 transitions, 1868 flow [2021-11-09 09:34:05,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:05,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:05,519 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:05,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-09 09:34:05,520 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash -787285304, now seen corresponding path program 26 times [2021-11-09 09:34:05,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:05,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203845735] [2021-11-09 09:34:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:05,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:05,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:05,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203845735] [2021-11-09 09:34:05,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203845735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:05,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:05,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:05,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718308607] [2021-11-09 09:34:05,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:05,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:05,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:05,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 227 transitions, 1868 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:05,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:05,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:05,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:06,449 INFO L129 PetriNetUnfolder]: 274/1451 cut-off events. [2021-11-09 09:34:06,449 INFO L130 PetriNetUnfolder]: For 12665/12721 co-relation queries the response was YES. [2021-11-09 09:34:06,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6694 conditions, 1451 events. 274/1451 cut-off events. For 12665/12721 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11087 event pairs, 197 based on Foata normal form. 7/1406 useless extension candidates. Maximal degree in co-relation 6557. Up to 601 conditions per place. [2021-11-09 09:34:06,476 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 82 selfloop transitions, 37 changer transitions 33/281 dead transitions. [2021-11-09 09:34:06,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 281 transitions, 2973 flow [2021-11-09 09:34:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:34:06,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-09 09:34:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2584 transitions. [2021-11-09 09:34:06,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2021-11-09 09:34:06,478 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2584 transitions. [2021-11-09 09:34:06,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2584 transitions. [2021-11-09 09:34:06,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:06,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2584 transitions. [2021-11-09 09:34:06,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.34782608695652) internal successors, (2584), 23 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:06,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:06,486 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:06,486 INFO L186 Difference]: Start difference. First operand has 344 places, 227 transitions, 1868 flow. Second operand 23 states and 2584 transitions. [2021-11-09 09:34:06,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 281 transitions, 2973 flow [2021-11-09 09:34:06,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 281 transitions, 2783 flow, removed 78 selfloop flow, removed 12 redundant places. [2021-11-09 09:34:06,603 INFO L242 Difference]: Finished difference. Result has 355 places, 237 transitions, 2079 flow [2021-11-09 09:34:06,603 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2079, PETRI_PLACES=355, PETRI_TRANSITIONS=237} [2021-11-09 09:34:06,603 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 219 predicate places. [2021-11-09 09:34:06,604 INFO L470 AbstractCegarLoop]: Abstraction has has 355 places, 237 transitions, 2079 flow [2021-11-09 09:34:06,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:06,604 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:06,604 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:06,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-09 09:34:06,604 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:06,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1598510160, now seen corresponding path program 27 times [2021-11-09 09:34:06,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:06,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320867687] [2021-11-09 09:34:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:06,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:06,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:06,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320867687] [2021-11-09 09:34:06,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320867687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:06,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:06,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:06,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161390683] [2021-11-09 09:34:06,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:06,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:06,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:06,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 237 transitions, 2079 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:06,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:06,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:06,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:07,518 INFO L129 PetriNetUnfolder]: 270/1439 cut-off events. [2021-11-09 09:34:07,518 INFO L130 PetriNetUnfolder]: For 12848/12904 co-relation queries the response was YES. [2021-11-09 09:34:07,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6717 conditions, 1439 events. 270/1439 cut-off events. For 12848/12904 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10990 event pairs, 192 based on Foata normal form. 7/1394 useless extension candidates. Maximal degree in co-relation 6574. Up to 599 conditions per place. [2021-11-09 09:34:07,544 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 91 selfloop transitions, 33 changer transitions 34/287 dead transitions. [2021-11-09 09:34:07,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 287 transitions, 3189 flow [2021-11-09 09:34:07,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:34:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:34:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2697 transitions. [2021-11-09 09:34:07,547 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7393092105263158 [2021-11-09 09:34:07,547 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2697 transitions. [2021-11-09 09:34:07,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2697 transitions. [2021-11-09 09:34:07,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:07,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2697 transitions. [2021-11-09 09:34:07,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.375) internal successors, (2697), 24 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:07,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:07,552 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:07,552 INFO L186 Difference]: Start difference. First operand has 355 places, 237 transitions, 2079 flow. Second operand 24 states and 2697 transitions. [2021-11-09 09:34:07,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 287 transitions, 3189 flow [2021-11-09 09:34:07,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 287 transitions, 2973 flow, removed 78 selfloop flow, removed 14 redundant places. [2021-11-09 09:34:07,719 INFO L242 Difference]: Finished difference. Result has 365 places, 241 transitions, 2179 flow [2021-11-09 09:34:07,719 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2179, PETRI_PLACES=365, PETRI_TRANSITIONS=241} [2021-11-09 09:34:07,720 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 229 predicate places. [2021-11-09 09:34:07,720 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 241 transitions, 2179 flow [2021-11-09 09:34:07,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:07,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:07,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:07,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-09 09:34:07,721 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:07,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash 689323748, now seen corresponding path program 28 times [2021-11-09 09:34:07,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:07,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997732696] [2021-11-09 09:34:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:07,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:07,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:07,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997732696] [2021-11-09 09:34:07,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997732696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:07,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:07,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:07,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679956433] [2021-11-09 09:34:07,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:07,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:07,883 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:07,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 241 transitions, 2179 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:07,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:07,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:07,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:08,718 INFO L129 PetriNetUnfolder]: 262/1418 cut-off events. [2021-11-09 09:34:08,718 INFO L130 PetriNetUnfolder]: For 12548/12604 co-relation queries the response was YES. [2021-11-09 09:34:08,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6567 conditions, 1418 events. 262/1418 cut-off events. For 12548/12604 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10793 event pairs, 185 based on Foata normal form. 7/1373 useless extension candidates. Maximal degree in co-relation 6420. Up to 601 conditions per place. [2021-11-09 09:34:08,746 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 87 selfloop transitions, 35 changer transitions 28/279 dead transitions. [2021-11-09 09:34:08,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 279 transitions, 3025 flow [2021-11-09 09:34:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:34:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:34:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2253 transitions. [2021-11-09 09:34:08,748 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7411184210526316 [2021-11-09 09:34:08,748 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2253 transitions. [2021-11-09 09:34:08,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2253 transitions. [2021-11-09 09:34:08,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:08,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2253 transitions. [2021-11-09 09:34:08,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.65) internal successors, (2253), 20 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:08,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:08,753 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:08,753 INFO L186 Difference]: Start difference. First operand has 365 places, 241 transitions, 2179 flow. Second operand 20 states and 2253 transitions. [2021-11-09 09:34:08,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 279 transitions, 3025 flow [2021-11-09 09:34:08,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 279 transitions, 2877 flow, removed 59 selfloop flow, removed 12 redundant places. [2021-11-09 09:34:08,873 INFO L242 Difference]: Finished difference. Result has 366 places, 248 transitions, 2311 flow [2021-11-09 09:34:08,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2311, PETRI_PLACES=366, PETRI_TRANSITIONS=248} [2021-11-09 09:34:08,873 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 230 predicate places. [2021-11-09 09:34:08,873 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 248 transitions, 2311 flow [2021-11-09 09:34:08,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:08,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:08,874 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:08,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-09 09:34:08,874 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2067708116, now seen corresponding path program 29 times [2021-11-09 09:34:08,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:08,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002202121] [2021-11-09 09:34:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:08,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:09,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:09,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002202121] [2021-11-09 09:34:09,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002202121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:09,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:09,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:09,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638703214] [2021-11-09 09:34:09,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:09,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:09,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:09,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:09,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 248 transitions, 2311 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:09,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:09,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:09,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:09,748 INFO L129 PetriNetUnfolder]: 258/1418 cut-off events. [2021-11-09 09:34:09,748 INFO L130 PetriNetUnfolder]: For 12312/12368 co-relation queries the response was YES. [2021-11-09 09:34:09,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6521 conditions, 1418 events. 258/1418 cut-off events. For 12312/12368 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10843 event pairs, 183 based on Foata normal form. 7/1373 useless extension candidates. Maximal degree in co-relation 6375. Up to 598 conditions per place. [2021-11-09 09:34:09,775 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 93 selfloop transitions, 35 changer transitions 28/285 dead transitions. [2021-11-09 09:34:09,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 285 transitions, 3169 flow [2021-11-09 09:34:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:34:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:34:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2255 transitions. [2021-11-09 09:34:09,777 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7417763157894737 [2021-11-09 09:34:09,777 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2255 transitions. [2021-11-09 09:34:09,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2255 transitions. [2021-11-09 09:34:09,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:09,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2255 transitions. [2021-11-09 09:34:09,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.75) internal successors, (2255), 20 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:09,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:09,782 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:09,782 INFO L186 Difference]: Start difference. First operand has 366 places, 248 transitions, 2311 flow. Second operand 20 states and 2255 transitions. [2021-11-09 09:34:09,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 285 transitions, 3169 flow [2021-11-09 09:34:09,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 285 transitions, 3018 flow, removed 56 selfloop flow, removed 8 redundant places. [2021-11-09 09:34:09,903 INFO L242 Difference]: Finished difference. Result has 377 places, 254 transitions, 2419 flow [2021-11-09 09:34:09,904 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2419, PETRI_PLACES=377, PETRI_TRANSITIONS=254} [2021-11-09 09:34:09,904 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 241 predicate places. [2021-11-09 09:34:09,904 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 254 transitions, 2419 flow [2021-11-09 09:34:09,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:09,905 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:09,905 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:09,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-09 09:34:09,905 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1653070364, now seen corresponding path program 30 times [2021-11-09 09:34:09,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:09,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31197170] [2021-11-09 09:34:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:09,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:10,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:10,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31197170] [2021-11-09 09:34:10,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31197170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:10,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:10,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:10,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68191497] [2021-11-09 09:34:10,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:10,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:10,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:10,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 254 transitions, 2419 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:10,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:10,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:10,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:10,932 INFO L129 PetriNetUnfolder]: 262/1433 cut-off events. [2021-11-09 09:34:10,932 INFO L130 PetriNetUnfolder]: For 12460/12516 co-relation queries the response was YES. [2021-11-09 09:34:10,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 1433 events. 262/1433 cut-off events. For 12460/12516 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10991 event pairs, 183 based on Foata normal form. 7/1388 useless extension candidates. Maximal degree in co-relation 6504. Up to 601 conditions per place. [2021-11-09 09:34:10,957 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 85 selfloop transitions, 51 changer transitions 28/293 dead transitions. [2021-11-09 09:34:10,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 293 transitions, 3358 flow [2021-11-09 09:34:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:34:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:34:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2142 transitions. [2021-11-09 09:34:10,959 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7416897506925207 [2021-11-09 09:34:10,959 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2142 transitions. [2021-11-09 09:34:10,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2142 transitions. [2021-11-09 09:34:10,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:10,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2142 transitions. [2021-11-09 09:34:10,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.73684210526316) internal successors, (2142), 19 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:10,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:10,965 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:10,965 INFO L186 Difference]: Start difference. First operand has 377 places, 254 transitions, 2419 flow. Second operand 19 states and 2142 transitions. [2021-11-09 09:34:10,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 293 transitions, 3358 flow [2021-11-09 09:34:11,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 293 transitions, 3230 flow, removed 40 selfloop flow, removed 8 redundant places. [2021-11-09 09:34:11,093 INFO L242 Difference]: Finished difference. Result has 387 places, 262 transitions, 2633 flow [2021-11-09 09:34:11,094 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2633, PETRI_PLACES=387, PETRI_TRANSITIONS=262} [2021-11-09 09:34:11,094 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 251 predicate places. [2021-11-09 09:34:11,094 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 262 transitions, 2633 flow [2021-11-09 09:34:11,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:11,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:11,095 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:11,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-09 09:34:11,096 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:11,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:11,096 INFO L85 PathProgramCache]: Analyzing trace with hash -429406190, now seen corresponding path program 31 times [2021-11-09 09:34:11,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:11,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916770508] [2021-11-09 09:34:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:11,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:11,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:11,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916770508] [2021-11-09 09:34:11,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916770508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:11,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:11,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:11,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676702752] [2021-11-09 09:34:11,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:11,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:11,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:11,280 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:11,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 262 transitions, 2633 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:11,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:11,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:11,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:12,133 INFO L129 PetriNetUnfolder]: 258/1409 cut-off events. [2021-11-09 09:34:12,133 INFO L130 PetriNetUnfolder]: For 12463/12519 co-relation queries the response was YES. [2021-11-09 09:34:12,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 1409 events. 258/1409 cut-off events. For 12463/12519 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10698 event pairs, 176 based on Foata normal form. 7/1364 useless extension candidates. Maximal degree in co-relation 6485. Up to 597 conditions per place. [2021-11-09 09:34:12,160 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 96 selfloop transitions, 43 changer transitions 29/297 dead transitions. [2021-11-09 09:34:12,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 297 transitions, 3536 flow [2021-11-09 09:34:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:34:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:34:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2253 transitions. [2021-11-09 09:34:12,163 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7411184210526316 [2021-11-09 09:34:12,163 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2253 transitions. [2021-11-09 09:34:12,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2253 transitions. [2021-11-09 09:34:12,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:12,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2253 transitions. [2021-11-09 09:34:12,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.65) internal successors, (2253), 20 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:12,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:12,167 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:12,167 INFO L186 Difference]: Start difference. First operand has 387 places, 262 transitions, 2633 flow. Second operand 20 states and 2253 transitions. [2021-11-09 09:34:12,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 297 transitions, 3536 flow [2021-11-09 09:34:12,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 297 transitions, 3385 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-11-09 09:34:12,338 INFO L242 Difference]: Finished difference. Result has 397 places, 266 transitions, 2730 flow [2021-11-09 09:34:12,339 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2730, PETRI_PLACES=397, PETRI_TRANSITIONS=266} [2021-11-09 09:34:12,339 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 261 predicate places. [2021-11-09 09:34:12,339 INFO L470 AbstractCegarLoop]: Abstraction has has 397 places, 266 transitions, 2730 flow [2021-11-09 09:34:12,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:12,340 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:12,340 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:12,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-09 09:34:12,341 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1136290990, now seen corresponding path program 32 times [2021-11-09 09:34:12,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:12,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490820128] [2021-11-09 09:34:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:12,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:12,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:12,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490820128] [2021-11-09 09:34:12,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490820128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:12,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:12,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:12,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415383735] [2021-11-09 09:34:12,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:12,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:12,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:12,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:12,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:12,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 266 transitions, 2730 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:12,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:12,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:12,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:13,360 INFO L129 PetriNetUnfolder]: 246/1389 cut-off events. [2021-11-09 09:34:13,360 INFO L130 PetriNetUnfolder]: For 12040/12096 co-relation queries the response was YES. [2021-11-09 09:34:13,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 1389 events. 246/1389 cut-off events. For 12040/12096 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10628 event pairs, 177 based on Foata normal form. 7/1344 useless extension candidates. Maximal degree in co-relation 6246. Up to 590 conditions per place. [2021-11-09 09:34:13,388 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 93 selfloop transitions, 20 changer transitions 42/284 dead transitions. [2021-11-09 09:34:13,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 284 transitions, 3256 flow [2021-11-09 09:34:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:34:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:34:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2141 transitions. [2021-11-09 09:34:13,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7413434903047091 [2021-11-09 09:34:13,391 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2141 transitions. [2021-11-09 09:34:13,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2141 transitions. [2021-11-09 09:34:13,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:13,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2141 transitions. [2021-11-09 09:34:13,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.6842105263158) internal successors, (2141), 19 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:13,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:13,395 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:13,396 INFO L186 Difference]: Start difference. First operand has 397 places, 266 transitions, 2730 flow. Second operand 19 states and 2141 transitions. [2021-11-09 09:34:13,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 284 transitions, 3256 flow [2021-11-09 09:34:13,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 284 transitions, 3135 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-11-09 09:34:13,524 INFO L242 Difference]: Finished difference. Result has 403 places, 242 transitions, 2248 flow [2021-11-09 09:34:13,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2248, PETRI_PLACES=403, PETRI_TRANSITIONS=242} [2021-11-09 09:34:13,525 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 267 predicate places. [2021-11-09 09:34:13,525 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 242 transitions, 2248 flow [2021-11-09 09:34:13,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:13,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:13,526 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:13,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-09 09:34:13,526 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:13,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1243368704, now seen corresponding path program 33 times [2021-11-09 09:34:13,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:13,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970399639] [2021-11-09 09:34:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:13,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:13,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:13,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970399639] [2021-11-09 09:34:13,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970399639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:13,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:13,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:13,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385083270] [2021-11-09 09:34:13,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:13,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:13,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:13,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:13,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 242 transitions, 2248 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:13,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:13,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:13,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:14,410 INFO L129 PetriNetUnfolder]: 237/1351 cut-off events. [2021-11-09 09:34:14,410 INFO L130 PetriNetUnfolder]: For 11460/11516 co-relation queries the response was YES. [2021-11-09 09:34:14,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6087 conditions, 1351 events. 237/1351 cut-off events. For 11460/11516 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10252 event pairs, 176 based on Foata normal form. 7/1306 useless extension candidates. Maximal degree in co-relation 5926. Up to 584 conditions per place. [2021-11-09 09:34:14,438 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 79 selfloop transitions, 17 changer transitions 40/265 dead transitions. [2021-11-09 09:34:14,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 265 transitions, 2839 flow [2021-11-09 09:34:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:34:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-09 09:34:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2250 transitions. [2021-11-09 09:34:14,441 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7401315789473685 [2021-11-09 09:34:14,441 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2250 transitions. [2021-11-09 09:34:14,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2250 transitions. [2021-11-09 09:34:14,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:14,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2250 transitions. [2021-11-09 09:34:14,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.5) internal successors, (2250), 20 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:14,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:14,446 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:14,446 INFO L186 Difference]: Start difference. First operand has 403 places, 242 transitions, 2248 flow. Second operand 20 states and 2250 transitions. [2021-11-09 09:34:14,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 265 transitions, 2839 flow [2021-11-09 09:34:14,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 265 transitions, 2620 flow, removed 37 selfloop flow, removed 25 redundant places. [2021-11-09 09:34:14,556 INFO L242 Difference]: Finished difference. Result has 375 places, 225 transitions, 1840 flow [2021-11-09 09:34:14,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1840, PETRI_PLACES=375, PETRI_TRANSITIONS=225} [2021-11-09 09:34:14,556 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 239 predicate places. [2021-11-09 09:34:14,557 INFO L470 AbstractCegarLoop]: Abstraction has has 375 places, 225 transitions, 1840 flow [2021-11-09 09:34:14,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:14,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:14,557 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:14,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-09 09:34:14,557 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash 17561052, now seen corresponding path program 34 times [2021-11-09 09:34:14,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:14,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176060841] [2021-11-09 09:34:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:14,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:14,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:14,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176060841] [2021-11-09 09:34:14,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176060841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:14,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:14,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:14,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116823014] [2021-11-09 09:34:14,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:14,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:14,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:14,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:14,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 225 transitions, 1840 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:14,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:14,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:14,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:15,444 INFO L129 PetriNetUnfolder]: 232/1329 cut-off events. [2021-11-09 09:34:15,445 INFO L130 PetriNetUnfolder]: For 10528/10584 co-relation queries the response was YES. [2021-11-09 09:34:15,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 1329 events. 232/1329 cut-off events. For 10528/10584 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10028 event pairs, 176 based on Foata normal form. 7/1284 useless extension candidates. Maximal degree in co-relation 5607. Up to 581 conditions per place. [2021-11-09 09:34:15,470 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 70 selfloop transitions, 17 changer transitions 37/253 dead transitions. [2021-11-09 09:34:15,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 253 transitions, 2459 flow [2021-11-09 09:34:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:34:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-09 09:34:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2357 transitions. [2021-11-09 09:34:15,472 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7384085213032582 [2021-11-09 09:34:15,472 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2357 transitions. [2021-11-09 09:34:15,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2357 transitions. [2021-11-09 09:34:15,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:15,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2357 transitions. [2021-11-09 09:34:15,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.23809523809524) internal successors, (2357), 21 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:15,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:15,477 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:15,477 INFO L186 Difference]: Start difference. First operand has 375 places, 225 transitions, 1840 flow. Second operand 21 states and 2357 transitions. [2021-11-09 09:34:15,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 253 transitions, 2459 flow [2021-11-09 09:34:15,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 253 transitions, 2264 flow, removed 30 selfloop flow, removed 26 redundant places. [2021-11-09 09:34:15,568 INFO L242 Difference]: Finished difference. Result has 354 places, 216 transitions, 1613 flow [2021-11-09 09:34:15,569 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1613, PETRI_PLACES=354, PETRI_TRANSITIONS=216} [2021-11-09 09:34:15,569 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 218 predicate places. [2021-11-09 09:34:15,569 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 216 transitions, 1613 flow [2021-11-09 09:34:15,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:15,569 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:15,569 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:15,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-09 09:34:15,570 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash -929026806, now seen corresponding path program 35 times [2021-11-09 09:34:15,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:15,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122907465] [2021-11-09 09:34:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:15,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:15,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:15,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122907465] [2021-11-09 09:34:15,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122907465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:15,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:15,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:15,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996102736] [2021-11-09 09:34:15,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:15,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:15,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:15,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:15,715 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-09 09:34:15,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 216 transitions, 1613 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:15,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:15,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-09 09:34:15,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:16,437 INFO L129 PetriNetUnfolder]: 221/1263 cut-off events. [2021-11-09 09:34:16,437 INFO L130 PetriNetUnfolder]: For 9748/9804 co-relation queries the response was YES. [2021-11-09 09:34:16,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 1263 events. 221/1263 cut-off events. For 9748/9804 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 9401 event pairs, 177 based on Foata normal form. 7/1218 useless extension candidates. Maximal degree in co-relation 5185. Up to 560 conditions per place. [2021-11-09 09:34:16,458 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 58 selfloop transitions, 2 changer transitions 43/228 dead transitions. [2021-11-09 09:34:16,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 228 transitions, 1915 flow [2021-11-09 09:34:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:34:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-09 09:34:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2453 transitions. [2021-11-09 09:34:16,460 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7335526315789473 [2021-11-09 09:34:16,460 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2453 transitions. [2021-11-09 09:34:16,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2453 transitions. [2021-11-09 09:34:16,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:16,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2453 transitions. [2021-11-09 09:34:16,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 111.5) internal successors, (2453), 22 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:16,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:16,466 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:16,466 INFO L186 Difference]: Start difference. First operand has 354 places, 216 transitions, 1613 flow. Second operand 22 states and 2453 transitions. [2021-11-09 09:34:16,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 228 transitions, 1915 flow [2021-11-09 09:34:16,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 228 transitions, 1803 flow, removed 23 selfloop flow, removed 24 redundant places. [2021-11-09 09:34:16,562 INFO L242 Difference]: Finished difference. Result has 337 places, 185 transitions, 1150 flow [2021-11-09 09:34:16,563 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1150, PETRI_PLACES=337, PETRI_TRANSITIONS=185} [2021-11-09 09:34:16,563 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 201 predicate places. [2021-11-09 09:34:16,563 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 185 transitions, 1150 flow [2021-11-09 09:34:16,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:16,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:16,563 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:16,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-09 09:34:16,564 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:16,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:16,564 INFO L85 PathProgramCache]: Analyzing trace with hash 768095992, now seen corresponding path program 1 times [2021-11-09 09:34:16,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:16,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470323000] [2021-11-09 09:34:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:16,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:16,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:16,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470323000] [2021-11-09 09:34:16,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470323000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:16,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:16,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:16,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967715587] [2021-11-09 09:34:16,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:16,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:16,780 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-09 09:34:16,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 185 transitions, 1150 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:16,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:16,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-09 09:34:16,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:17,097 INFO L129 PetriNetUnfolder]: 109/979 cut-off events. [2021-11-09 09:34:17,097 INFO L130 PetriNetUnfolder]: For 8289/8551 co-relation queries the response was YES. [2021-11-09 09:34:17,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 979 events. 109/979 cut-off events. For 8289/8551 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6709 event pairs, 77 based on Foata normal form. 45/985 useless extension candidates. Maximal degree in co-relation 3415. Up to 70 conditions per place. [2021-11-09 09:34:17,112 INFO L132 encePairwiseOnDemand]: 144/152 looper letters, 35 selfloop transitions, 16 changer transitions 15/190 dead transitions. [2021-11-09 09:34:17,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 190 transitions, 1271 flow [2021-11-09 09:34:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 09:34:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2021-11-09 09:34:17,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8539473684210527 [2021-11-09 09:34:17,114 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2021-11-09 09:34:17,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2021-11-09 09:34:17,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:17,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2021-11-09 09:34:17,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,116 INFO L186 Difference]: Start difference. First operand has 337 places, 185 transitions, 1150 flow. Second operand 5 states and 649 transitions. [2021-11-09 09:34:17,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 190 transitions, 1271 flow [2021-11-09 09:34:17,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 190 transitions, 1191 flow, removed 29 selfloop flow, removed 26 redundant places. [2021-11-09 09:34:17,165 INFO L242 Difference]: Finished difference. Result has 278 places, 169 transitions, 1013 flow [2021-11-09 09:34:17,166 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=278, PETRI_TRANSITIONS=169} [2021-11-09 09:34:17,166 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 142 predicate places. [2021-11-09 09:34:17,166 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 169 transitions, 1013 flow [2021-11-09 09:34:17,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,166 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:17,166 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:17,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-09 09:34:17,167 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash 71518878, now seen corresponding path program 2 times [2021-11-09 09:34:17,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:17,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197427621] [2021-11-09 09:34:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:17,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:17,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:17,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197427621] [2021-11-09 09:34:17,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197427621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:17,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:17,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:17,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056532244] [2021-11-09 09:34:17,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:17,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:17,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:17,259 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-09 09:34:17,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 169 transitions, 1013 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:17,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-09 09:34:17,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:17,680 INFO L129 PetriNetUnfolder]: 103/904 cut-off events. [2021-11-09 09:34:17,680 INFO L130 PetriNetUnfolder]: For 7579/7753 co-relation queries the response was YES. [2021-11-09 09:34:17,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3203 conditions, 904 events. 103/904 cut-off events. For 7579/7753 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5943 event pairs, 68 based on Foata normal form. 29/895 useless extension candidates. Maximal degree in co-relation 3094. Up to 64 conditions per place. [2021-11-09 09:34:17,701 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 33 selfloop transitions, 8 changer transitions 13/171 dead transitions. [2021-11-09 09:34:17,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 171 transitions, 1119 flow [2021-11-09 09:34:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 09:34:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2021-11-09 09:34:17,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8473684210526315 [2021-11-09 09:34:17,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2021-11-09 09:34:17,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2021-11-09 09:34:17,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:17,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2021-11-09 09:34:17,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,707 INFO L186 Difference]: Start difference. First operand has 278 places, 169 transitions, 1013 flow. Second operand 5 states and 644 transitions. [2021-11-09 09:34:17,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 171 transitions, 1119 flow [2021-11-09 09:34:17,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 171 transitions, 1003 flow, removed 45 selfloop flow, removed 26 redundant places. [2021-11-09 09:34:17,749 INFO L242 Difference]: Finished difference. Result has 243 places, 156 transitions, 815 flow [2021-11-09 09:34:17,750 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=243, PETRI_TRANSITIONS=156} [2021-11-09 09:34:17,750 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 107 predicate places. [2021-11-09 09:34:17,750 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 156 transitions, 815 flow [2021-11-09 09:34:17,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:17,750 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:17,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-09 09:34:17,751 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash -811535662, now seen corresponding path program 1 times [2021-11-09 09:34:17,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:17,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140733233] [2021-11-09 09:34:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:17,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:17,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:17,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140733233] [2021-11-09 09:34:17,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140733233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:17,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:17,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:17,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944147779] [2021-11-09 09:34:17,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:17,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:17,840 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-09 09:34:17,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 156 transitions, 815 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:17,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:17,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-09 09:34:17,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:18,030 INFO L129 PetriNetUnfolder]: 66/637 cut-off events. [2021-11-09 09:34:18,030 INFO L130 PetriNetUnfolder]: For 2596/2719 co-relation queries the response was YES. [2021-11-09 09:34:18,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 637 events. 66/637 cut-off events. For 2596/2719 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3582 event pairs, 42 based on Foata normal form. 21/633 useless extension candidates. Maximal degree in co-relation 1829. Up to 54 conditions per place. [2021-11-09 09:34:18,038 INFO L132 encePairwiseOnDemand]: 144/152 looper letters, 28 selfloop transitions, 4 changer transitions 13/157 dead transitions. [2021-11-09 09:34:18,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 157 transitions, 877 flow [2021-11-09 09:34:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:18,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 09:34:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 640 transitions. [2021-11-09 09:34:18,040 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8421052631578947 [2021-11-09 09:34:18,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 640 transitions. [2021-11-09 09:34:18,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 640 transitions. [2021-11-09 09:34:18,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:18,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 640 transitions. [2021-11-09 09:34:18,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:18,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:18,041 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:18,042 INFO L186 Difference]: Start difference. First operand has 243 places, 156 transitions, 815 flow. Second operand 5 states and 640 transitions. [2021-11-09 09:34:18,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 157 transitions, 877 flow [2021-11-09 09:34:18,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 157 transitions, 806 flow, removed 24 selfloop flow, removed 11 redundant places. [2021-11-09 09:34:18,057 INFO L242 Difference]: Finished difference. Result has 228 places, 142 transitions, 627 flow [2021-11-09 09:34:18,058 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=228, PETRI_TRANSITIONS=142} [2021-11-09 09:34:18,058 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 92 predicate places. [2021-11-09 09:34:18,058 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 142 transitions, 627 flow [2021-11-09 09:34:18,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:18,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:18,059 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:18,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-09 09:34:18,059 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2009918854, now seen corresponding path program 2 times [2021-11-09 09:34:18,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:18,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858519735] [2021-11-09 09:34:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:18,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:18,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:18,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858519735] [2021-11-09 09:34:18,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858519735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:18,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:18,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:18,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713897865] [2021-11-09 09:34:18,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:18,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:18,401 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:18,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 142 transitions, 627 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:18,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:18,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:18,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:20,079 INFO L129 PetriNetUnfolder]: 305/1314 cut-off events. [2021-11-09 09:34:20,079 INFO L130 PetriNetUnfolder]: For 4820/4823 co-relation queries the response was YES. [2021-11-09 09:34:20,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 1314 events. 305/1314 cut-off events. For 4820/4823 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8505 event pairs, 129 based on Foata normal form. 1/1271 useless extension candidates. Maximal degree in co-relation 4268. Up to 392 conditions per place. [2021-11-09 09:34:20,097 INFO L132 encePairwiseOnDemand]: 125/152 looper letters, 156 selfloop transitions, 36 changer transitions 25/283 dead transitions. [2021-11-09 09:34:20,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 283 transitions, 1993 flow [2021-11-09 09:34:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:34:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-09 09:34:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2402 transitions. [2021-11-09 09:34:20,100 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5643796992481203 [2021-11-09 09:34:20,100 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2402 transitions. [2021-11-09 09:34:20,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2402 transitions. [2021-11-09 09:34:20,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:20,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2402 transitions. [2021-11-09 09:34:20,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 85.78571428571429) internal successors, (2402), 28 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,107 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,108 INFO L186 Difference]: Start difference. First operand has 228 places, 142 transitions, 627 flow. Second operand 28 states and 2402 transitions. [2021-11-09 09:34:20,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 283 transitions, 1993 flow [2021-11-09 09:34:20,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 283 transitions, 1910 flow, removed 32 selfloop flow, removed 9 redundant places. [2021-11-09 09:34:20,133 INFO L242 Difference]: Finished difference. Result has 257 places, 167 transitions, 949 flow [2021-11-09 09:34:20,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=949, PETRI_PLACES=257, PETRI_TRANSITIONS=167} [2021-11-09 09:34:20,134 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 121 predicate places. [2021-11-09 09:34:20,134 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 167 transitions, 949 flow [2021-11-09 09:34:20,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,135 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:20,135 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:20,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-09 09:34:20,135 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1043132820, now seen corresponding path program 3 times [2021-11-09 09:34:20,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:20,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758276221] [2021-11-09 09:34:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:20,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:20,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:20,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758276221] [2021-11-09 09:34:20,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758276221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:20,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:20,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:20,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415694070] [2021-11-09 09:34:20,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:20,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:20,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:20,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-09 09:34:20,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 167 transitions, 949 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:20,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-09 09:34:20,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:20,546 INFO L129 PetriNetUnfolder]: 62/536 cut-off events. [2021-11-09 09:34:20,547 INFO L130 PetriNetUnfolder]: For 2224/2270 co-relation queries the response was YES. [2021-11-09 09:34:20,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 536 events. 62/536 cut-off events. For 2224/2270 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2678 event pairs, 33 based on Foata normal form. 6/518 useless extension candidates. Maximal degree in co-relation 1679. Up to 54 conditions per place. [2021-11-09 09:34:20,559 INFO L132 encePairwiseOnDemand]: 147/152 looper letters, 26 selfloop transitions, 1 changer transitions 9/163 dead transitions. [2021-11-09 09:34:20,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 163 transitions, 970 flow [2021-11-09 09:34:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 09:34:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 633 transitions. [2021-11-09 09:34:20,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8328947368421052 [2021-11-09 09:34:20,562 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 633 transitions. [2021-11-09 09:34:20,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 633 transitions. [2021-11-09 09:34:20,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:20,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 633 transitions. [2021-11-09 09:34:20,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,565 INFO L186 Difference]: Start difference. First operand has 257 places, 167 transitions, 949 flow. Second operand 5 states and 633 transitions. [2021-11-09 09:34:20,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 163 transitions, 970 flow [2021-11-09 09:34:20,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 163 transitions, 868 flow, removed 44 selfloop flow, removed 10 redundant places. [2021-11-09 09:34:20,591 INFO L242 Difference]: Finished difference. Result has 241 places, 154 transitions, 718 flow [2021-11-09 09:34:20,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=718, PETRI_PLACES=241, PETRI_TRANSITIONS=154} [2021-11-09 09:34:20,592 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 105 predicate places. [2021-11-09 09:34:20,592 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 154 transitions, 718 flow [2021-11-09 09:34:20,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,593 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:20,593 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:20,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-09 09:34:20,593 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:20,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:20,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1385706930, now seen corresponding path program 3 times [2021-11-09 09:34:20,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:20,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829747717] [2021-11-09 09:34:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:20,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:20,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:20,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829747717] [2021-11-09 09:34:20,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829747717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:20,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:20,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:20,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246784946] [2021-11-09 09:34:20,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:20,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:20,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:20,982 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:20,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 154 transitions, 718 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:20,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:20,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:22,499 INFO L129 PetriNetUnfolder]: 270/1047 cut-off events. [2021-11-09 09:34:22,499 INFO L130 PetriNetUnfolder]: For 3981/3984 co-relation queries the response was YES. [2021-11-09 09:34:22,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 1047 events. 270/1047 cut-off events. For 3981/3984 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5971 event pairs, 125 based on Foata normal form. 1/1004 useless extension candidates. Maximal degree in co-relation 3731. Up to 392 conditions per place. [2021-11-09 09:34:22,514 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 126 selfloop transitions, 32 changer transitions 26/250 dead transitions. [2021-11-09 09:34:22,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 250 transitions, 1808 flow [2021-11-09 09:34:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:34:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:34:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2048 transitions. [2021-11-09 09:34:22,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2021-11-09 09:34:22,517 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2048 transitions. [2021-11-09 09:34:22,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2048 transitions. [2021-11-09 09:34:22,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:22,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2048 transitions. [2021-11-09 09:34:22,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.33333333333333) internal successors, (2048), 24 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,522 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,522 INFO L186 Difference]: Start difference. First operand has 241 places, 154 transitions, 718 flow. Second operand 24 states and 2048 transitions. [2021-11-09 09:34:22,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 250 transitions, 1808 flow [2021-11-09 09:34:22,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 250 transitions, 1761 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-11-09 09:34:22,546 INFO L242 Difference]: Finished difference. Result has 257 places, 167 transitions, 966 flow [2021-11-09 09:34:22,547 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=966, PETRI_PLACES=257, PETRI_TRANSITIONS=167} [2021-11-09 09:34:22,547 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 121 predicate places. [2021-11-09 09:34:22,547 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 167 transitions, 966 flow [2021-11-09 09:34:22,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,548 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:22,548 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:22,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-09 09:34:22,548 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:22,548 INFO L85 PathProgramCache]: Analyzing trace with hash 955280, now seen corresponding path program 4 times [2021-11-09 09:34:22,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:22,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049619975] [2021-11-09 09:34:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:22,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:22,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:22,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049619975] [2021-11-09 09:34:22,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049619975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:22,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:22,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:22,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881773646] [2021-11-09 09:34:22,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:22,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:22,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:22,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 167 transitions, 966 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:22,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:22,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:25,183 INFO L129 PetriNetUnfolder]: 343/1379 cut-off events. [2021-11-09 09:34:25,183 INFO L130 PetriNetUnfolder]: For 7603/7609 co-relation queries the response was YES. [2021-11-09 09:34:25,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5552 conditions, 1379 events. 343/1379 cut-off events. For 7603/7609 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9076 event pairs, 143 based on Foata normal form. 2/1327 useless extension candidates. Maximal degree in co-relation 5465. Up to 392 conditions per place. [2021-11-09 09:34:25,202 INFO L132 encePairwiseOnDemand]: 127/152 looper letters, 187 selfloop transitions, 27 changer transitions 60/340 dead transitions. [2021-11-09 09:34:25,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 340 transitions, 2841 flow [2021-11-09 09:34:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-09 09:34:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-09 09:34:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3084 transitions. [2021-11-09 09:34:25,206 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5635964912280702 [2021-11-09 09:34:25,206 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3084 transitions. [2021-11-09 09:34:25,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3084 transitions. [2021-11-09 09:34:25,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:25,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3084 transitions. [2021-11-09 09:34:25,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 85.66666666666667) internal successors, (3084), 36 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,215 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,215 INFO L186 Difference]: Start difference. First operand has 257 places, 167 transitions, 966 flow. Second operand 36 states and 3084 transitions. [2021-11-09 09:34:25,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 340 transitions, 2841 flow [2021-11-09 09:34:25,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 340 transitions, 2530 flow, removed 87 selfloop flow, removed 15 redundant places. [2021-11-09 09:34:25,265 INFO L242 Difference]: Finished difference. Result has 299 places, 175 transitions, 1099 flow [2021-11-09 09:34:25,265 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=233, 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=36, PETRI_FLOW=1099, PETRI_PLACES=299, PETRI_TRANSITIONS=175} [2021-11-09 09:34:25,266 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 163 predicate places. [2021-11-09 09:34:25,266 INFO L470 AbstractCegarLoop]: Abstraction has has 299 places, 175 transitions, 1099 flow [2021-11-09 09:34:25,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,266 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:25,267 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:25,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-09 09:34:25,267 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:25,268 INFO L85 PathProgramCache]: Analyzing trace with hash -834137774, now seen corresponding path program 5 times [2021-11-09 09:34:25,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:25,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052743052] [2021-11-09 09:34:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:25,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:25,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:25,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052743052] [2021-11-09 09:34:25,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052743052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:25,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:25,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:25,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844828494] [2021-11-09 09:34:25,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:25,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:25,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:25,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:25,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:25,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 175 transitions, 1099 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:25,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:25,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:29,151 INFO L129 PetriNetUnfolder]: 324/1415 cut-off events. [2021-11-09 09:34:29,151 INFO L130 PetriNetUnfolder]: For 8426/8431 co-relation queries the response was YES. [2021-11-09 09:34:29,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5754 conditions, 1415 events. 324/1415 cut-off events. For 8426/8431 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9804 event pairs, 135 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 5642. Up to 392 conditions per place. [2021-11-09 09:34:29,178 INFO L132 encePairwiseOnDemand]: 127/152 looper letters, 156 selfloop transitions, 28 changer transitions 63/313 dead transitions. [2021-11-09 09:34:29,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 313 transitions, 2795 flow [2021-11-09 09:34:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-09 09:34:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-09 09:34:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3135 transitions. [2021-11-09 09:34:29,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5574324324324325 [2021-11-09 09:34:29,182 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3135 transitions. [2021-11-09 09:34:29,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3135 transitions. [2021-11-09 09:34:29,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:29,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3135 transitions. [2021-11-09 09:34:29,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.72972972972973) internal successors, (3135), 37 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:29,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 152.0) internal successors, (5776), 38 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:29,193 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 152.0) internal successors, (5776), 38 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:29,194 INFO L186 Difference]: Start difference. First operand has 299 places, 175 transitions, 1099 flow. Second operand 37 states and 3135 transitions. [2021-11-09 09:34:29,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 313 transitions, 2795 flow [2021-11-09 09:34:29,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 313 transitions, 2385 flow, removed 188 selfloop flow, removed 29 redundant places. [2021-11-09 09:34:29,259 INFO L242 Difference]: Finished difference. Result has 310 places, 174 transitions, 1132 flow [2021-11-09 09:34:29,260 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1132, PETRI_PLACES=310, PETRI_TRANSITIONS=174} [2021-11-09 09:34:29,260 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 174 predicate places. [2021-11-09 09:34:29,260 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 174 transitions, 1132 flow [2021-11-09 09:34:29,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:29,261 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:29,261 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:29,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-09 09:34:29,261 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 878819668, now seen corresponding path program 6 times [2021-11-09 09:34:29,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:29,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448114134] [2021-11-09 09:34:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:29,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:29,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:29,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448114134] [2021-11-09 09:34:29,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448114134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:29,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:29,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:29,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243954180] [2021-11-09 09:34:29,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:29,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:29,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:29,587 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:29,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 174 transitions, 1132 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:29,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:29,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:29,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:31,344 INFO L129 PetriNetUnfolder]: 322/1265 cut-off events. [2021-11-09 09:34:31,345 INFO L130 PetriNetUnfolder]: For 8710/8716 co-relation queries the response was YES. [2021-11-09 09:34:31,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1265 events. 322/1265 cut-off events. For 8710/8716 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7845 event pairs, 141 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 5385. Up to 392 conditions per place. [2021-11-09 09:34:31,368 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 150 selfloop transitions, 41 changer transitions 29/286 dead transitions. [2021-11-09 09:34:31,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 286 transitions, 2980 flow [2021-11-09 09:34:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:34:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:34:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2052 transitions. [2021-11-09 09:34:31,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5625 [2021-11-09 09:34:31,372 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2052 transitions. [2021-11-09 09:34:31,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2052 transitions. [2021-11-09 09:34:31,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:31,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2052 transitions. [2021-11-09 09:34:31,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.5) internal successors, (2052), 24 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:31,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:31,378 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:31,378 INFO L186 Difference]: Start difference. First operand has 310 places, 174 transitions, 1132 flow. Second operand 24 states and 2052 transitions. [2021-11-09 09:34:31,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 286 transitions, 2980 flow [2021-11-09 09:34:31,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 286 transitions, 2816 flow, removed 69 selfloop flow, removed 32 redundant places. [2021-11-09 09:34:31,426 INFO L242 Difference]: Finished difference. Result has 281 places, 193 transitions, 1562 flow [2021-11-09 09:34:31,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1562, PETRI_PLACES=281, PETRI_TRANSITIONS=193} [2021-11-09 09:34:31,426 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 145 predicate places. [2021-11-09 09:34:31,427 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 193 transitions, 1562 flow [2021-11-09 09:34:31,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:31,427 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:31,427 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:31,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-09 09:34:31,427 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:31,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:31,428 INFO L85 PathProgramCache]: Analyzing trace with hash -221763498, now seen corresponding path program 7 times [2021-11-09 09:34:31,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:31,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274087020] [2021-11-09 09:34:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:31,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:31,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:31,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274087020] [2021-11-09 09:34:31,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274087020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:31,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:31,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:31,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579909180] [2021-11-09 09:34:31,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:31,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:31,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:31,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 193 transitions, 1562 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:31,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:31,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:31,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:34,087 INFO L129 PetriNetUnfolder]: 335/1376 cut-off events. [2021-11-09 09:34:34,087 INFO L130 PetriNetUnfolder]: For 8823/8830 co-relation queries the response was YES. [2021-11-09 09:34:34,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5900 conditions, 1376 events. 335/1376 cut-off events. For 8823/8830 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 9076 event pairs, 131 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 5802. Up to 392 conditions per place. [2021-11-09 09:34:34,108 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 166 selfloop transitions, 40 changer transitions 60/332 dead transitions. [2021-11-09 09:34:34,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 332 transitions, 3361 flow [2021-11-09 09:34:34,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-09 09:34:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-09 09:34:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2972 transitions. [2021-11-09 09:34:34,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5586466165413534 [2021-11-09 09:34:34,111 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2972 transitions. [2021-11-09 09:34:34,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2972 transitions. [2021-11-09 09:34:34,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:34,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2972 transitions. [2021-11-09 09:34:34,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 84.91428571428571) internal successors, (2972), 35 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:34,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 152.0) internal successors, (5472), 36 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:34,118 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 152.0) internal successors, (5472), 36 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:34,118 INFO L186 Difference]: Start difference. First operand has 281 places, 193 transitions, 1562 flow. Second operand 35 states and 2972 transitions. [2021-11-09 09:34:34,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 332 transitions, 3361 flow [2021-11-09 09:34:34,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 332 transitions, 3052 flow, removed 105 selfloop flow, removed 14 redundant places. [2021-11-09 09:34:34,181 INFO L242 Difference]: Finished difference. Result has 321 places, 193 transitions, 1581 flow [2021-11-09 09:34:34,182 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1581, PETRI_PLACES=321, PETRI_TRANSITIONS=193} [2021-11-09 09:34:34,182 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 185 predicate places. [2021-11-09 09:34:34,182 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 193 transitions, 1581 flow [2021-11-09 09:34:34,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:34,182 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:34,182 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:34,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-09 09:34:34,183 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:34,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:34,183 INFO L85 PathProgramCache]: Analyzing trace with hash -93453872, now seen corresponding path program 8 times [2021-11-09 09:34:34,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:34,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949749413] [2021-11-09 09:34:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:34,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:34,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:34,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949749413] [2021-11-09 09:34:34,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949749413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:34,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:34,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:34,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377578432] [2021-11-09 09:34:34,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:34,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:34,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:34,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 193 transitions, 1581 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:34,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:34,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:34,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:36,580 INFO L129 PetriNetUnfolder]: 358/1488 cut-off events. [2021-11-09 09:34:36,580 INFO L130 PetriNetUnfolder]: For 13275/13283 co-relation queries the response was YES. [2021-11-09 09:34:36,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6878 conditions, 1488 events. 358/1488 cut-off events. For 13275/13283 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10152 event pairs, 152 based on Foata normal form. 2/1433 useless extension candidates. Maximal degree in co-relation 6757. Up to 392 conditions per place. [2021-11-09 09:34:36,605 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 180 selfloop transitions, 39 changer transitions 51/336 dead transitions. [2021-11-09 09:34:36,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 336 transitions, 3776 flow [2021-11-09 09:34:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 09:34:36,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-11-09 09:34:36,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2725 transitions. [2021-11-09 09:34:36,608 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5602384868421053 [2021-11-09 09:34:36,609 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2725 transitions. [2021-11-09 09:34:36,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2725 transitions. [2021-11-09 09:34:36,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:36,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2725 transitions. [2021-11-09 09:34:36,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.15625) internal successors, (2725), 32 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:36,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:36,616 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:36,616 INFO L186 Difference]: Start difference. First operand has 321 places, 193 transitions, 1581 flow. Second operand 32 states and 2725 transitions. [2021-11-09 09:34:36,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 336 transitions, 3776 flow [2021-11-09 09:34:36,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 336 transitions, 3458 flow, removed 127 selfloop flow, removed 33 redundant places. [2021-11-09 09:34:36,691 INFO L242 Difference]: Finished difference. Result has 317 places, 200 transitions, 1870 flow [2021-11-09 09:34:36,691 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1870, PETRI_PLACES=317, PETRI_TRANSITIONS=200} [2021-11-09 09:34:36,691 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 181 predicate places. [2021-11-09 09:34:36,691 INFO L470 AbstractCegarLoop]: Abstraction has has 317 places, 200 transitions, 1870 flow [2021-11-09 09:34:36,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:36,692 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:36,692 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:36,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-09 09:34:36,692 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:36,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1007712320, now seen corresponding path program 9 times [2021-11-09 09:34:36,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:36,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458707139] [2021-11-09 09:34:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:36,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:37,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:37,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458707139] [2021-11-09 09:34:37,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458707139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:37,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:37,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:37,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190118932] [2021-11-09 09:34:37,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:37,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:37,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:37,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 200 transitions, 1870 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:37,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:37,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:37,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:39,471 INFO L129 PetriNetUnfolder]: 420/1894 cut-off events. [2021-11-09 09:34:39,471 INFO L130 PetriNetUnfolder]: For 20865/20884 co-relation queries the response was YES. [2021-11-09 09:34:39,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 1894 events. 420/1894 cut-off events. For 20865/20884 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14518 event pairs, 168 based on Foata normal form. 5/1830 useless extension candidates. Maximal degree in co-relation 9019. Up to 392 conditions per place. [2021-11-09 09:34:39,512 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 189 selfloop transitions, 47 changer transitions 71/373 dead transitions. [2021-11-09 09:34:39,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 373 transitions, 4506 flow [2021-11-09 09:34:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 09:34:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-11-09 09:34:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2915 transitions. [2021-11-09 09:34:39,515 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5640479876160991 [2021-11-09 09:34:39,515 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2915 transitions. [2021-11-09 09:34:39,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2915 transitions. [2021-11-09 09:34:39,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:39,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2915 transitions. [2021-11-09 09:34:39,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 85.73529411764706) internal successors, (2915), 34 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:39,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:39,524 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:39,525 INFO L186 Difference]: Start difference. First operand has 317 places, 200 transitions, 1870 flow. Second operand 34 states and 2915 transitions. [2021-11-09 09:34:39,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 373 transitions, 4506 flow [2021-11-09 09:34:39,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 373 transitions, 4071 flow, removed 169 selfloop flow, removed 26 redundant places. [2021-11-09 09:34:39,658 INFO L242 Difference]: Finished difference. Result has 331 places, 207 transitions, 2134 flow [2021-11-09 09:34:39,658 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2134, PETRI_PLACES=331, PETRI_TRANSITIONS=207} [2021-11-09 09:34:39,659 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 195 predicate places. [2021-11-09 09:34:39,659 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 207 transitions, 2134 flow [2021-11-09 09:34:39,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:39,659 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:39,659 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:39,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-09 09:34:39,659 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:39,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:39,660 INFO L85 PathProgramCache]: Analyzing trace with hash 872829116, now seen corresponding path program 10 times [2021-11-09 09:34:39,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:39,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215347263] [2021-11-09 09:34:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:39,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:40,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:40,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215347263] [2021-11-09 09:34:40,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215347263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:40,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:40,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:40,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673524548] [2021-11-09 09:34:40,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:40,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:40,031 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:40,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 207 transitions, 2134 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:40,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:40,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:40,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:42,254 INFO L129 PetriNetUnfolder]: 396/1721 cut-off events. [2021-11-09 09:34:42,254 INFO L130 PetriNetUnfolder]: For 19377/19393 co-relation queries the response was YES. [2021-11-09 09:34:42,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8536 conditions, 1721 events. 396/1721 cut-off events. For 19377/19393 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12514 event pairs, 195 based on Foata normal form. 4/1657 useless extension candidates. Maximal degree in co-relation 8409. Up to 392 conditions per place. [2021-11-09 09:34:42,290 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 184 selfloop transitions, 45 changer transitions 59/354 dead transitions. [2021-11-09 09:34:42,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 354 transitions, 4281 flow [2021-11-09 09:34:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 09:34:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-11-09 09:34:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2899 transitions. [2021-11-09 09:34:42,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5609520123839009 [2021-11-09 09:34:42,293 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2899 transitions. [2021-11-09 09:34:42,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2899 transitions. [2021-11-09 09:34:42,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:42,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2899 transitions. [2021-11-09 09:34:42,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 85.26470588235294) internal successors, (2899), 34 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:42,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:42,301 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:42,301 INFO L186 Difference]: Start difference. First operand has 331 places, 207 transitions, 2134 flow. Second operand 34 states and 2899 transitions. [2021-11-09 09:34:42,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 354 transitions, 4281 flow [2021-11-09 09:34:42,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 354 transitions, 3927 flow, removed 149 selfloop flow, removed 28 redundant places. [2021-11-09 09:34:42,416 INFO L242 Difference]: Finished difference. Result has 338 places, 208 transitions, 2244 flow [2021-11-09 09:34:42,416 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2244, PETRI_PLACES=338, PETRI_TRANSITIONS=208} [2021-11-09 09:34:42,417 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 202 predicate places. [2021-11-09 09:34:42,417 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 208 transitions, 2244 flow [2021-11-09 09:34:42,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:42,418 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:42,418 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:42,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-09 09:34:42,418 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 785377180, now seen corresponding path program 11 times [2021-11-09 09:34:42,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:42,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997227412] [2021-11-09 09:34:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:42,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:42,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:42,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997227412] [2021-11-09 09:34:42,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997227412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:42,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:42,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:42,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585843913] [2021-11-09 09:34:42,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:42,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:42,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:42,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 208 transitions, 2244 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:42,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:42,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:42,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:45,124 INFO L129 PetriNetUnfolder]: 412/1850 cut-off events. [2021-11-09 09:34:45,125 INFO L130 PetriNetUnfolder]: For 21551/21567 co-relation queries the response was YES. [2021-11-09 09:34:45,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9123 conditions, 1850 events. 412/1850 cut-off events. For 21551/21567 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14068 event pairs, 179 based on Foata normal form. 4/1786 useless extension candidates. Maximal degree in co-relation 8993. Up to 392 conditions per place. [2021-11-09 09:34:45,157 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 186 selfloop transitions, 49 changer transitions 65/366 dead transitions. [2021-11-09 09:34:45,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 366 transitions, 4672 flow [2021-11-09 09:34:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-09 09:34:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-11-09 09:34:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2829 transitions. [2021-11-09 09:34:45,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5639952153110048 [2021-11-09 09:34:45,160 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2829 transitions. [2021-11-09 09:34:45,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2829 transitions. [2021-11-09 09:34:45,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:45,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2829 transitions. [2021-11-09 09:34:45,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.72727272727273) internal successors, (2829), 33 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:45,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:45,166 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:45,167 INFO L186 Difference]: Start difference. First operand has 338 places, 208 transitions, 2244 flow. Second operand 33 states and 2829 transitions. [2021-11-09 09:34:45,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 366 transitions, 4672 flow [2021-11-09 09:34:45,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 366 transitions, 4010 flow, removed 162 selfloop flow, removed 35 redundant places. [2021-11-09 09:34:45,271 INFO L242 Difference]: Finished difference. Result has 335 places, 209 transitions, 2150 flow [2021-11-09 09:34:45,271 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2150, PETRI_PLACES=335, PETRI_TRANSITIONS=209} [2021-11-09 09:34:45,271 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-09 09:34:45,271 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 209 transitions, 2150 flow [2021-11-09 09:34:45,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:45,272 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:45,272 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:45,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-09 09:34:45,272 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1696208238, now seen corresponding path program 12 times [2021-11-09 09:34:45,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:45,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81379480] [2021-11-09 09:34:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:45,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:45,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:45,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81379480] [2021-11-09 09:34:45,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81379480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:45,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:45,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:45,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243423147] [2021-11-09 09:34:45,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:45,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:45,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:45,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 209 transitions, 2150 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:45,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:45,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:45,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:47,722 INFO L129 PetriNetUnfolder]: 394/1728 cut-off events. [2021-11-09 09:34:47,722 INFO L130 PetriNetUnfolder]: For 17453/17472 co-relation queries the response was YES. [2021-11-09 09:34:47,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8503 conditions, 1728 events. 394/1728 cut-off events. For 17453/17472 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12778 event pairs, 175 based on Foata normal form. 5/1671 useless extension candidates. Maximal degree in co-relation 8377. Up to 392 conditions per place. [2021-11-09 09:34:47,754 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 179 selfloop transitions, 50 changer transitions 61/356 dead transitions. [2021-11-09 09:34:47,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 356 transitions, 4410 flow [2021-11-09 09:34:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 09:34:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-11-09 09:34:47,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2741 transitions. [2021-11-09 09:34:47,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5635279605263158 [2021-11-09 09:34:47,757 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2741 transitions. [2021-11-09 09:34:47,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2741 transitions. [2021-11-09 09:34:47,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:47,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2741 transitions. [2021-11-09 09:34:47,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.65625) internal successors, (2741), 32 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:47,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:47,764 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:47,765 INFO L186 Difference]: Start difference. First operand has 335 places, 209 transitions, 2150 flow. Second operand 32 states and 2741 transitions. [2021-11-09 09:34:47,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 356 transitions, 4410 flow [2021-11-09 09:34:47,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 356 transitions, 3938 flow, removed 147 selfloop flow, removed 31 redundant places. [2021-11-09 09:34:47,856 INFO L242 Difference]: Finished difference. Result has 335 places, 210 transitions, 2164 flow [2021-11-09 09:34:47,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2164, PETRI_PLACES=335, PETRI_TRANSITIONS=210} [2021-11-09 09:34:47,857 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-09 09:34:47,857 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 210 transitions, 2164 flow [2021-11-09 09:34:47,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:47,857 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:47,857 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:47,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-09 09:34:47,858 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1008920498, now seen corresponding path program 13 times [2021-11-09 09:34:47,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:47,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142994293] [2021-11-09 09:34:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:47,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:48,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:48,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142994293] [2021-11-09 09:34:48,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142994293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:48,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:48,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:48,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352067159] [2021-11-09 09:34:48,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:48,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:48,247 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:48,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 210 transitions, 2164 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:48,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:48,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:48,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:50,058 INFO L129 PetriNetUnfolder]: 382/1636 cut-off events. [2021-11-09 09:34:50,059 INFO L130 PetriNetUnfolder]: For 16935/16951 co-relation queries the response was YES. [2021-11-09 09:34:50,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 1636 events. 382/1636 cut-off events. For 16935/16951 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11575 event pairs, 174 based on Foata normal form. 4/1572 useless extension candidates. Maximal degree in co-relation 7960. Up to 392 conditions per place. [2021-11-09 09:34:50,092 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 155 selfloop transitions, 75 changer transitions 39/335 dead transitions. [2021-11-09 09:34:50,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 335 transitions, 4479 flow [2021-11-09 09:34:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:34:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:34:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2067 transitions. [2021-11-09 09:34:50,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5666118421052632 [2021-11-09 09:34:50,095 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2067 transitions. [2021-11-09 09:34:50,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2067 transitions. [2021-11-09 09:34:50,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:50,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2067 transitions. [2021-11-09 09:34:50,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.125) internal successors, (2067), 24 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:50,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:50,100 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:50,100 INFO L186 Difference]: Start difference. First operand has 335 places, 210 transitions, 2164 flow. Second operand 24 states and 2067 transitions. [2021-11-09 09:34:50,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 335 transitions, 4479 flow [2021-11-09 09:34:50,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 335 transitions, 4017 flow, removed 105 selfloop flow, removed 30 redundant places. [2021-11-09 09:34:50,180 INFO L242 Difference]: Finished difference. Result has 320 places, 240 transitions, 2809 flow [2021-11-09 09:34:50,180 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2809, PETRI_PLACES=320, PETRI_TRANSITIONS=240} [2021-11-09 09:34:50,180 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 184 predicate places. [2021-11-09 09:34:50,181 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 240 transitions, 2809 flow [2021-11-09 09:34:50,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:50,181 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:50,181 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:50,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-09 09:34:50,181 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:50,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:50,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1161854082, now seen corresponding path program 14 times [2021-11-09 09:34:50,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:50,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595594520] [2021-11-09 09:34:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:50,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:50,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:50,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595594520] [2021-11-09 09:34:50,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595594520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:50,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:50,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:50,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812956920] [2021-11-09 09:34:50,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:50,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:50,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:50,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:50,565 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:50,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 240 transitions, 2809 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:50,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:50,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:50,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:52,846 INFO L129 PetriNetUnfolder]: 388/1690 cut-off events. [2021-11-09 09:34:52,847 INFO L130 PetriNetUnfolder]: For 15399/15412 co-relation queries the response was YES. [2021-11-09 09:34:52,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 1690 events. 388/1690 cut-off events. For 15399/15412 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12308 event pairs, 168 based on Foata normal form. 4/1628 useless extension candidates. Maximal degree in co-relation 8155. Up to 392 conditions per place. [2021-11-09 09:34:52,884 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 178 selfloop transitions, 67 changer transitions 53/364 dead transitions. [2021-11-09 09:34:52,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 364 transitions, 4717 flow [2021-11-09 09:34:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:34:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-09 09:34:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2652 transitions. [2021-11-09 09:34:52,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5628183361629882 [2021-11-09 09:34:52,895 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2652 transitions. [2021-11-09 09:34:52,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2652 transitions. [2021-11-09 09:34:52,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:52,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2652 transitions. [2021-11-09 09:34:52,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.54838709677419) internal successors, (2652), 31 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:52,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:52,907 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:52,907 INFO L186 Difference]: Start difference. First operand has 320 places, 240 transitions, 2809 flow. Second operand 31 states and 2652 transitions. [2021-11-09 09:34:52,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 364 transitions, 4717 flow [2021-11-09 09:34:53,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 364 transitions, 4020 flow, removed 301 selfloop flow, removed 14 redundant places. [2021-11-09 09:34:53,007 INFO L242 Difference]: Finished difference. Result has 348 places, 238 transitions, 2606 flow [2021-11-09 09:34:53,008 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2606, PETRI_PLACES=348, PETRI_TRANSITIONS=238} [2021-11-09 09:34:53,008 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 212 predicate places. [2021-11-09 09:34:53,008 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 238 transitions, 2606 flow [2021-11-09 09:34:53,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:53,008 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:53,009 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:53,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-09 09:34:53,009 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:53,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:53,009 INFO L85 PathProgramCache]: Analyzing trace with hash -248651454, now seen corresponding path program 15 times [2021-11-09 09:34:53,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:53,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244416578] [2021-11-09 09:34:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:53,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:53,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:53,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244416578] [2021-11-09 09:34:53,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244416578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:53,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:53,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:53,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768480735] [2021-11-09 09:34:53,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:53,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:53,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:53,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 238 transitions, 2606 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:53,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:53,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:53,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:55,775 INFO L129 PetriNetUnfolder]: 376/1644 cut-off events. [2021-11-09 09:34:55,775 INFO L130 PetriNetUnfolder]: For 14310/14324 co-relation queries the response was YES. [2021-11-09 09:34:55,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7904 conditions, 1644 events. 376/1644 cut-off events. For 14310/14324 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11923 event pairs, 168 based on Foata normal form. 5/1590 useless extension candidates. Maximal degree in co-relation 7776. Up to 392 conditions per place. [2021-11-09 09:34:55,834 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 160 selfloop transitions, 69 changer transitions 49/344 dead transitions. [2021-11-09 09:34:55,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 344 transitions, 4259 flow [2021-11-09 09:34:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:34:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-09 09:34:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2555 transitions. [2021-11-09 09:34:55,839 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5603070175438597 [2021-11-09 09:34:55,839 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2555 transitions. [2021-11-09 09:34:55,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2555 transitions. [2021-11-09 09:34:55,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:55,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2555 transitions. [2021-11-09 09:34:55,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 85.16666666666667) internal successors, (2555), 30 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:55,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:55,852 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:55,853 INFO L186 Difference]: Start difference. First operand has 348 places, 238 transitions, 2606 flow. Second operand 30 states and 2555 transitions. [2021-11-09 09:34:55,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 344 transitions, 4259 flow [2021-11-09 09:34:55,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 344 transitions, 3865 flow, removed 87 selfloop flow, removed 30 redundant places. [2021-11-09 09:34:55,966 INFO L242 Difference]: Finished difference. Result has 346 places, 240 transitions, 2611 flow [2021-11-09 09:34:55,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2611, PETRI_PLACES=346, PETRI_TRANSITIONS=240} [2021-11-09 09:34:55,966 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 210 predicate places. [2021-11-09 09:34:55,966 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 240 transitions, 2611 flow [2021-11-09 09:34:55,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:55,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:55,967 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:55,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-09 09:34:55,967 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:55,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1082689848, now seen corresponding path program 16 times [2021-11-09 09:34:55,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:55,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197184784] [2021-11-09 09:34:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:55,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:56,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:56,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197184784] [2021-11-09 09:34:56,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197184784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:56,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:56,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:56,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757129752] [2021-11-09 09:34:56,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:56,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:56,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:56,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 240 transitions, 2611 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:56,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:56,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:34:57,954 INFO L129 PetriNetUnfolder]: 374/1624 cut-off events. [2021-11-09 09:34:57,955 INFO L130 PetriNetUnfolder]: For 13641/13655 co-relation queries the response was YES. [2021-11-09 09:34:57,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7817 conditions, 1624 events. 374/1624 cut-off events. For 13641/13655 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 11654 event pairs, 164 based on Foata normal form. 4/1570 useless extension candidates. Maximal degree in co-relation 7691. Up to 392 conditions per place. [2021-11-09 09:34:57,987 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 152 selfloop transitions, 74 changer transitions 41/333 dead transitions. [2021-11-09 09:34:57,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 333 transitions, 4115 flow [2021-11-09 09:34:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:34:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:34:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2226 transitions. [2021-11-09 09:34:57,990 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5632591093117408 [2021-11-09 09:34:57,990 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2226 transitions. [2021-11-09 09:34:57,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2226 transitions. [2021-11-09 09:34:57,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:34:57,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2226 transitions. [2021-11-09 09:34:57,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.61538461538461) internal successors, (2226), 26 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:57,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:57,996 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:57,996 INFO L186 Difference]: Start difference. First operand has 346 places, 240 transitions, 2611 flow. Second operand 26 states and 2226 transitions. [2021-11-09 09:34:57,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 333 transitions, 4115 flow [2021-11-09 09:34:58,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 333 transitions, 3923 flow, removed 48 selfloop flow, removed 24 redundant places. [2021-11-09 09:34:58,086 INFO L242 Difference]: Finished difference. Result has 340 places, 246 transitions, 2802 flow [2021-11-09 09:34:58,086 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2802, PETRI_PLACES=340, PETRI_TRANSITIONS=246} [2021-11-09 09:34:58,086 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 204 predicate places. [2021-11-09 09:34:58,086 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 246 transitions, 2802 flow [2021-11-09 09:34:58,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,087 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:34:58,087 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:58,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-09 09:34:58,087 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:34:58,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash 341475830, now seen corresponding path program 17 times [2021-11-09 09:34:58,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:58,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746660658] [2021-11-09 09:34:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:58,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:58,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:58,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746660658] [2021-11-09 09:34:58,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746660658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:58,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:58,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:34:58,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224152964] [2021-11-09 09:34:58,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:34:58,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:34:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:34:58,475 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:34:58,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 246 transitions, 2802 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:34:58,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:34:58,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:00,183 INFO L129 PetriNetUnfolder]: 352/1570 cut-off events. [2021-11-09 09:35:00,183 INFO L130 PetriNetUnfolder]: For 12836/12847 co-relation queries the response was YES. [2021-11-09 09:35:00,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7376 conditions, 1570 events. 352/1570 cut-off events. For 12836/12847 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11114 event pairs, 152 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 7255. Up to 392 conditions per place. [2021-11-09 09:35:00,214 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 151 selfloop transitions, 64 changer transitions 45/326 dead transitions. [2021-11-09 09:35:00,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 326 transitions, 4018 flow [2021-11-09 09:35:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:35:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-09 09:35:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2386 transitions. [2021-11-09 09:35:00,217 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5606203007518797 [2021-11-09 09:35:00,217 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2386 transitions. [2021-11-09 09:35:00,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2386 transitions. [2021-11-09 09:35:00,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:00,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2386 transitions. [2021-11-09 09:35:00,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 85.21428571428571) internal successors, (2386), 28 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,223 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,224 INFO L186 Difference]: Start difference. First operand has 340 places, 246 transitions, 2802 flow. Second operand 28 states and 2386 transitions. [2021-11-09 09:35:00,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 326 transitions, 4018 flow [2021-11-09 09:35:00,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 326 transitions, 3764 flow, removed 37 selfloop flow, removed 19 redundant places. [2021-11-09 09:35:00,313 INFO L242 Difference]: Finished difference. Result has 351 places, 238 transitions, 2608 flow [2021-11-09 09:35:00,314 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2608, PETRI_PLACES=351, PETRI_TRANSITIONS=238} [2021-11-09 09:35:00,314 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 215 predicate places. [2021-11-09 09:35:00,314 INFO L470 AbstractCegarLoop]: Abstraction has has 351 places, 238 transitions, 2608 flow [2021-11-09 09:35:00,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:00,315 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:00,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-09 09:35:00,315 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:00,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1932090170, now seen corresponding path program 18 times [2021-11-09 09:35:00,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:00,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521939663] [2021-11-09 09:35:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:00,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:00,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:00,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521939663] [2021-11-09 09:35:00,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521939663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:00,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:00,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:00,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220137153] [2021-11-09 09:35:00,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:00,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:00,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:00,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:00,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:00,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 238 transitions, 2608 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:00,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:00,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:03,038 INFO L129 PetriNetUnfolder]: 322/1332 cut-off events. [2021-11-09 09:35:03,038 INFO L130 PetriNetUnfolder]: For 11182/11188 co-relation queries the response was YES. [2021-11-09 09:35:03,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6322 conditions, 1332 events. 322/1332 cut-off events. For 11182/11188 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8614 event pairs, 154 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 6195. Up to 392 conditions per place. [2021-11-09 09:35:03,070 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 131 selfloop transitions, 36 changer transitions 59/292 dead transitions. [2021-11-09 09:35:03,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 292 transitions, 3327 flow [2021-11-09 09:35:03,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:35:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:35:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2213 transitions. [2021-11-09 09:35:03,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5599696356275303 [2021-11-09 09:35:03,072 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2213 transitions. [2021-11-09 09:35:03,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2213 transitions. [2021-11-09 09:35:03,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:03,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2213 transitions. [2021-11-09 09:35:03,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.11538461538461) internal successors, (2213), 26 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:03,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:03,081 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:03,082 INFO L186 Difference]: Start difference. First operand has 351 places, 238 transitions, 2608 flow. Second operand 26 states and 2213 transitions. [2021-11-09 09:35:03,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 292 transitions, 3327 flow [2021-11-09 09:35:03,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 292 transitions, 3130 flow, removed 44 selfloop flow, removed 22 redundant places. [2021-11-09 09:35:03,160 INFO L242 Difference]: Finished difference. Result has 343 places, 196 transitions, 1831 flow [2021-11-09 09:35:03,161 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1831, PETRI_PLACES=343, PETRI_TRANSITIONS=196} [2021-11-09 09:35:03,161 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-09 09:35:03,161 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 196 transitions, 1831 flow [2021-11-09 09:35:03,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:03,161 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:03,162 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:03,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-09 09:35:03,162 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:03,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1537321896, now seen corresponding path program 19 times [2021-11-09 09:35:03,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:03,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323569190] [2021-11-09 09:35:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:03,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:03,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:03,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323569190] [2021-11-09 09:35:03,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323569190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:03,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:03,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:03,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309200025] [2021-11-09 09:35:03,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:03,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:03,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:03,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:03,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:03,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 196 transitions, 1831 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:03,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:03,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:03,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:05,500 INFO L129 PetriNetUnfolder]: 349/1541 cut-off events. [2021-11-09 09:35:05,500 INFO L130 PetriNetUnfolder]: For 13649/13666 co-relation queries the response was YES. [2021-11-09 09:35:05,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7144 conditions, 1541 events. 349/1541 cut-off events. For 13649/13666 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10955 event pairs, 158 based on Foata normal form. 4/1489 useless extension candidates. Maximal degree in co-relation 7026. Up to 392 conditions per place. [2021-11-09 09:35:05,528 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 174 selfloop transitions, 45 changer transitions 52/337 dead transitions. [2021-11-09 09:35:05,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 337 transitions, 3869 flow [2021-11-09 09:35:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-09 09:35:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-11-09 09:35:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2808 transitions. [2021-11-09 09:35:05,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5598086124401914 [2021-11-09 09:35:05,531 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2808 transitions. [2021-11-09 09:35:05,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2808 transitions. [2021-11-09 09:35:05,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:05,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2808 transitions. [2021-11-09 09:35:05,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.0909090909091) internal successors, (2808), 33 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:05,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:05,538 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:05,538 INFO L186 Difference]: Start difference. First operand has 343 places, 196 transitions, 1831 flow. Second operand 33 states and 2808 transitions. [2021-11-09 09:35:05,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 337 transitions, 3869 flow [2021-11-09 09:35:05,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 337 transitions, 3428 flow, removed 86 selfloop flow, removed 23 redundant places. [2021-11-09 09:35:05,613 INFO L242 Difference]: Finished difference. Result has 331 places, 203 transitions, 2009 flow [2021-11-09 09:35:05,614 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2009, PETRI_PLACES=331, PETRI_TRANSITIONS=203} [2021-11-09 09:35:05,614 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 195 predicate places. [2021-11-09 09:35:05,614 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 203 transitions, 2009 flow [2021-11-09 09:35:05,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:05,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:05,614 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:05,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-09 09:35:05,615 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1662897498, now seen corresponding path program 20 times [2021-11-09 09:35:05,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:05,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169472093] [2021-11-09 09:35:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:05,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:05,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:05,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169472093] [2021-11-09 09:35:05,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169472093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:05,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:05,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:05,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267571287] [2021-11-09 09:35:05,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:05,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:05,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:05,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 203 transitions, 2009 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:05,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:05,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:05,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:08,305 INFO L129 PetriNetUnfolder]: 363/1548 cut-off events. [2021-11-09 09:35:08,305 INFO L130 PetriNetUnfolder]: For 17208/17230 co-relation queries the response was YES. [2021-11-09 09:35:08,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1548 events. 363/1548 cut-off events. For 17208/17230 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 10828 event pairs, 169 based on Foata normal form. 2/1489 useless extension candidates. Maximal degree in co-relation 7645. Up to 392 conditions per place. [2021-11-09 09:35:08,334 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 176 selfloop transitions, 51 changer transitions 49/342 dead transitions. [2021-11-09 09:35:08,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 342 transitions, 4185 flow [2021-11-09 09:35:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 09:35:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-11-09 09:35:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2737 transitions. [2021-11-09 09:35:08,337 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5627055921052632 [2021-11-09 09:35:08,337 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2737 transitions. [2021-11-09 09:35:08,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2737 transitions. [2021-11-09 09:35:08,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:08,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2737 transitions. [2021-11-09 09:35:08,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.53125) internal successors, (2737), 32 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:08,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:08,344 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:08,345 INFO L186 Difference]: Start difference. First operand has 331 places, 203 transitions, 2009 flow. Second operand 32 states and 2737 transitions. [2021-11-09 09:35:08,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 342 transitions, 4185 flow [2021-11-09 09:35:08,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 342 transitions, 3745 flow, removed 212 selfloop flow, removed 28 redundant places. [2021-11-09 09:35:08,441 INFO L242 Difference]: Finished difference. Result has 336 places, 211 transitions, 2300 flow [2021-11-09 09:35:08,442 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2300, PETRI_PLACES=336, PETRI_TRANSITIONS=211} [2021-11-09 09:35:08,442 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 200 predicate places. [2021-11-09 09:35:08,442 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 211 transitions, 2300 flow [2021-11-09 09:35:08,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:08,443 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:08,443 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:08,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-09 09:35:08,444 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1667961288, now seen corresponding path program 21 times [2021-11-09 09:35:08,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:08,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984891090] [2021-11-09 09:35:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:08,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:08,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:08,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984891090] [2021-11-09 09:35:08,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984891090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:08,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:08,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:08,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690147106] [2021-11-09 09:35:08,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:08,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:08,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:08,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:08,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:08,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 211 transitions, 2300 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:08,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:08,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:08,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:11,166 INFO L129 PetriNetUnfolder]: 343/1472 cut-off events. [2021-11-09 09:35:11,166 INFO L130 PetriNetUnfolder]: For 15103/15125 co-relation queries the response was YES. [2021-11-09 09:35:11,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1472 events. 343/1472 cut-off events. For 15103/15125 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10145 event pairs, 152 based on Foata normal form. 5/1419 useless extension candidates. Maximal degree in co-relation 7052. Up to 392 conditions per place. [2021-11-09 09:35:11,191 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 175 selfloop transitions, 45 changer transitions 57/343 dead transitions. [2021-11-09 09:35:11,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 343 transitions, 4129 flow [2021-11-09 09:35:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-09 09:35:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-11-09 09:35:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2820 transitions. [2021-11-09 09:35:11,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.562200956937799 [2021-11-09 09:35:11,197 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2820 transitions. [2021-11-09 09:35:11,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2820 transitions. [2021-11-09 09:35:11,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:11,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2820 transitions. [2021-11-09 09:35:11,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.45454545454545) internal successors, (2820), 33 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:11,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:11,204 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:11,204 INFO L186 Difference]: Start difference. First operand has 336 places, 211 transitions, 2300 flow. Second operand 33 states and 2820 transitions. [2021-11-09 09:35:11,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 343 transitions, 4129 flow [2021-11-09 09:35:11,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 343 transitions, 3671 flow, removed 182 selfloop flow, removed 26 redundant places. [2021-11-09 09:35:11,287 INFO L242 Difference]: Finished difference. Result has 345 places, 205 transitions, 2127 flow [2021-11-09 09:35:11,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2127, PETRI_PLACES=345, PETRI_TRANSITIONS=205} [2021-11-09 09:35:11,287 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 209 predicate places. [2021-11-09 09:35:11,287 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 205 transitions, 2127 flow [2021-11-09 09:35:11,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:11,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:11,288 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:11,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-09 09:35:11,288 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:11,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1593581730, now seen corresponding path program 22 times [2021-11-09 09:35:11,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:11,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717266878] [2021-11-09 09:35:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:11,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:11,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:11,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717266878] [2021-11-09 09:35:11,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717266878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:11,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:11,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:11,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473021950] [2021-11-09 09:35:11,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:11,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:11,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:11,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:11,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 205 transitions, 2127 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:11,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:11,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:11,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:13,588 INFO L129 PetriNetUnfolder]: 332/1390 cut-off events. [2021-11-09 09:35:13,589 INFO L130 PetriNetUnfolder]: For 13483/13491 co-relation queries the response was YES. [2021-11-09 09:35:13,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 1390 events. 332/1390 cut-off events. For 13483/13491 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9212 event pairs, 149 based on Foata normal form. 1/1332 useless extension candidates. Maximal degree in co-relation 6582. Up to 392 conditions per place. [2021-11-09 09:35:13,637 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 142 selfloop transitions, 63 changer transitions 30/301 dead transitions. [2021-11-09 09:35:13,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 301 transitions, 3740 flow [2021-11-09 09:35:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:35:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:35:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2062 transitions. [2021-11-09 09:35:13,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5652412280701754 [2021-11-09 09:35:13,641 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2062 transitions. [2021-11-09 09:35:13,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2062 transitions. [2021-11-09 09:35:13,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:13,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2062 transitions. [2021-11-09 09:35:13,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.91666666666667) internal successors, (2062), 24 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:13,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:13,650 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:13,650 INFO L186 Difference]: Start difference. First operand has 345 places, 205 transitions, 2127 flow. Second operand 24 states and 2062 transitions. [2021-11-09 09:35:13,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 301 transitions, 3740 flow [2021-11-09 09:35:13,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 301 transitions, 3235 flow, removed 85 selfloop flow, removed 37 redundant places. [2021-11-09 09:35:13,750 INFO L242 Difference]: Finished difference. Result has 322 places, 224 transitions, 2393 flow [2021-11-09 09:35:13,751 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2393, PETRI_PLACES=322, PETRI_TRANSITIONS=224} [2021-11-09 09:35:13,751 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 186 predicate places. [2021-11-09 09:35:13,751 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 224 transitions, 2393 flow [2021-11-09 09:35:13,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:13,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:13,752 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:13,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-09 09:35:13,752 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash -344187704, now seen corresponding path program 23 times [2021-11-09 09:35:13,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:13,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301906939] [2021-11-09 09:35:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:13,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:14,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:14,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301906939] [2021-11-09 09:35:14,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301906939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:14,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:14,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:14,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926711916] [2021-11-09 09:35:14,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:14,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:14,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:14,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:14,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 224 transitions, 2393 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:14,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:14,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:14,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:15,997 INFO L129 PetriNetUnfolder]: 335/1398 cut-off events. [2021-11-09 09:35:15,997 INFO L130 PetriNetUnfolder]: For 11775/11798 co-relation queries the response was YES. [2021-11-09 09:35:16,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 1398 events. 335/1398 cut-off events. For 11775/11798 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9341 event pairs, 156 based on Foata normal form. 3/1342 useless extension candidates. Maximal degree in co-relation 6515. Up to 392 conditions per place. [2021-11-09 09:35:16,023 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 173 selfloop transitions, 54 changer transitions 42/335 dead transitions. [2021-11-09 09:35:16,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 335 transitions, 3953 flow [2021-11-09 09:35:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:35:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-09 09:35:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2647 transitions. [2021-11-09 09:35:16,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5617572156196944 [2021-11-09 09:35:16,026 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2647 transitions. [2021-11-09 09:35:16,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2647 transitions. [2021-11-09 09:35:16,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:16,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2647 transitions. [2021-11-09 09:35:16,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.38709677419355) internal successors, (2647), 31 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:16,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:16,032 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:16,033 INFO L186 Difference]: Start difference. First operand has 322 places, 224 transitions, 2393 flow. Second operand 31 states and 2647 transitions. [2021-11-09 09:35:16,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 335 transitions, 3953 flow [2021-11-09 09:35:16,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 335 transitions, 3420 flow, removed 180 selfloop flow, removed 16 redundant places. [2021-11-09 09:35:16,106 INFO L242 Difference]: Finished difference. Result has 348 places, 223 transitions, 2231 flow [2021-11-09 09:35:16,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2231, PETRI_PLACES=348, PETRI_TRANSITIONS=223} [2021-11-09 09:35:16,107 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 212 predicate places. [2021-11-09 09:35:16,108 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 223 transitions, 2231 flow [2021-11-09 09:35:16,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:16,108 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:16,109 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:16,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-09 09:35:16,109 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1754693240, now seen corresponding path program 24 times [2021-11-09 09:35:16,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:16,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123389987] [2021-11-09 09:35:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:16,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:16,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:16,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123389987] [2021-11-09 09:35:16,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123389987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:16,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:16,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:16,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727423015] [2021-11-09 09:35:16,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:16,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:16,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:16,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:16,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:16,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 223 transitions, 2231 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:16,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:16,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:16,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:18,140 INFO L129 PetriNetUnfolder]: 329/1340 cut-off events. [2021-11-09 09:35:18,140 INFO L130 PetriNetUnfolder]: For 10574/10582 co-relation queries the response was YES. [2021-11-09 09:35:18,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 1340 events. 329/1340 cut-off events. For 10574/10582 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8824 event pairs, 162 based on Foata normal form. 2/1287 useless extension candidates. Maximal degree in co-relation 6255. Up to 392 conditions per place. [2021-11-09 09:35:18,166 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 154 selfloop transitions, 57 changer transitions 39/316 dead transitions. [2021-11-09 09:35:18,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 316 transitions, 3591 flow [2021-11-09 09:35:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:35:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-09 09:35:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2550 transitions. [2021-11-09 09:35:18,168 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2021-11-09 09:35:18,169 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2550 transitions. [2021-11-09 09:35:18,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2550 transitions. [2021-11-09 09:35:18,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:18,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2550 transitions. [2021-11-09 09:35:18,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 85.0) internal successors, (2550), 30 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:18,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:18,175 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:18,175 INFO L186 Difference]: Start difference. First operand has 348 places, 223 transitions, 2231 flow. Second operand 30 states and 2550 transitions. [2021-11-09 09:35:18,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 316 transitions, 3591 flow [2021-11-09 09:35:18,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 316 transitions, 3306 flow, removed 67 selfloop flow, removed 30 redundant places. [2021-11-09 09:35:18,256 INFO L242 Difference]: Finished difference. Result has 346 places, 225 transitions, 2260 flow [2021-11-09 09:35:18,257 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2260, PETRI_PLACES=346, PETRI_TRANSITIONS=225} [2021-11-09 09:35:18,257 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 210 predicate places. [2021-11-09 09:35:18,257 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 225 transitions, 2260 flow [2021-11-09 09:35:18,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:18,257 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:18,258 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:18,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-09 09:35:18,258 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:18,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:18,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1738169844, now seen corresponding path program 25 times [2021-11-09 09:35:18,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:18,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401125527] [2021-11-09 09:35:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:18,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:18,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:18,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401125527] [2021-11-09 09:35:18,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401125527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:18,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:18,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:18,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731999959] [2021-11-09 09:35:18,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:18,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:18,642 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:18,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 225 transitions, 2260 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:18,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:18,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:18,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:20,432 INFO L129 PetriNetUnfolder]: 328/1350 cut-off events. [2021-11-09 09:35:20,432 INFO L130 PetriNetUnfolder]: For 10774/10788 co-relation queries the response was YES. [2021-11-09 09:35:20,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6401 conditions, 1350 events. 328/1350 cut-off events. For 10774/10788 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8835 event pairs, 155 based on Foata normal form. 3/1299 useless extension candidates. Maximal degree in co-relation 6270. Up to 392 conditions per place. [2021-11-09 09:35:20,459 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 143 selfloop transitions, 62 changer transitions 32/303 dead transitions. [2021-11-09 09:35:20,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 303 transitions, 3422 flow [2021-11-09 09:35:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:35:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:35:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2221 transitions. [2021-11-09 09:35:20,462 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5619939271255061 [2021-11-09 09:35:20,462 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2221 transitions. [2021-11-09 09:35:20,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2221 transitions. [2021-11-09 09:35:20,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:20,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2221 transitions. [2021-11-09 09:35:20,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.42307692307692) internal successors, (2221), 26 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:20,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:20,468 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:20,468 INFO L186 Difference]: Start difference. First operand has 346 places, 225 transitions, 2260 flow. Second operand 26 states and 2221 transitions. [2021-11-09 09:35:20,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 303 transitions, 3422 flow [2021-11-09 09:35:20,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 303 transitions, 3238 flow, removed 46 selfloop flow, removed 24 redundant places. [2021-11-09 09:35:20,540 INFO L242 Difference]: Finished difference. Result has 340 places, 229 transitions, 2369 flow [2021-11-09 09:35:20,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2369, PETRI_PLACES=340, PETRI_TRANSITIONS=229} [2021-11-09 09:35:20,540 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 204 predicate places. [2021-11-09 09:35:20,540 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 229 transitions, 2369 flow [2021-11-09 09:35:20,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:20,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:20,541 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:20,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-09 09:35:20,541 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1656356514, now seen corresponding path program 26 times [2021-11-09 09:35:20,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:20,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477149648] [2021-11-09 09:35:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:20,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:20,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:20,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477149648] [2021-11-09 09:35:20,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477149648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:20,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:20,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:20,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100381689] [2021-11-09 09:35:20,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:20,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:20,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:20,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:20,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:20,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 229 transitions, 2369 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:20,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:20,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:20,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:22,585 INFO L129 PetriNetUnfolder]: 317/1313 cut-off events. [2021-11-09 09:35:22,585 INFO L130 PetriNetUnfolder]: For 10400/10411 co-relation queries the response was YES. [2021-11-09 09:35:22,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6136 conditions, 1313 events. 317/1313 cut-off events. For 10400/10411 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8573 event pairs, 155 based on Foata normal form. 3/1263 useless extension candidates. Maximal degree in co-relation 6010. Up to 392 conditions per place. [2021-11-09 09:35:22,609 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 144 selfloop transitions, 56 changer transitions 35/301 dead transitions. [2021-11-09 09:35:22,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 301 transitions, 3408 flow [2021-11-09 09:35:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:35:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-09 09:35:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2381 transitions. [2021-11-09 09:35:22,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5594454887218046 [2021-11-09 09:35:22,612 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2381 transitions. [2021-11-09 09:35:22,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2381 transitions. [2021-11-09 09:35:22,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:22,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2381 transitions. [2021-11-09 09:35:22,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 85.03571428571429) internal successors, (2381), 28 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:22,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:22,618 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:22,618 INFO L186 Difference]: Start difference. First operand has 340 places, 229 transitions, 2369 flow. Second operand 28 states and 2381 transitions. [2021-11-09 09:35:22,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 301 transitions, 3408 flow [2021-11-09 09:35:22,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 301 transitions, 3198 flow, removed 34 selfloop flow, removed 19 redundant places. [2021-11-09 09:35:22,686 INFO L242 Difference]: Finished difference. Result has 351 places, 226 transitions, 2297 flow [2021-11-09 09:35:22,686 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2297, PETRI_PLACES=351, PETRI_TRANSITIONS=226} [2021-11-09 09:35:22,686 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 215 predicate places. [2021-11-09 09:35:22,687 INFO L470 AbstractCegarLoop]: Abstraction has has 351 places, 226 transitions, 2297 flow [2021-11-09 09:35:22,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:22,687 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:22,687 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:22,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-09 09:35:22,687 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:22,688 INFO L85 PathProgramCache]: Analyzing trace with hash -440341756, now seen corresponding path program 27 times [2021-11-09 09:35:22,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:22,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375253093] [2021-11-09 09:35:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:22,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:22,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:22,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375253093] [2021-11-09 09:35:22,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375253093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:22,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:22,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:22,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711221709] [2021-11-09 09:35:22,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:22,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:22,987 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:22,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 226 transitions, 2297 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:22,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:22,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:22,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:24,512 INFO L129 PetriNetUnfolder]: 302/1203 cut-off events. [2021-11-09 09:35:24,512 INFO L130 PetriNetUnfolder]: For 9459/9465 co-relation queries the response was YES. [2021-11-09 09:35:24,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 1203 events. 302/1203 cut-off events. For 9459/9465 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7472 event pairs, 153 based on Foata normal form. 1/1152 useless extension candidates. Maximal degree in co-relation 5534. Up to 392 conditions per place. [2021-11-09 09:35:24,534 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 127 selfloop transitions, 37 changer transitions 47/277 dead transitions. [2021-11-09 09:35:24,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 277 transitions, 2974 flow [2021-11-09 09:35:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:35:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:35:24,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2208 transitions. [2021-11-09 09:35:24,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5587044534412956 [2021-11-09 09:35:24,537 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2208 transitions. [2021-11-09 09:35:24,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2208 transitions. [2021-11-09 09:35:24,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:24,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2208 transitions. [2021-11-09 09:35:24,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 84.92307692307692) internal successors, (2208), 26 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:24,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:24,545 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:24,545 INFO L186 Difference]: Start difference. First operand has 351 places, 226 transitions, 2297 flow. Second operand 26 states and 2208 transitions. [2021-11-09 09:35:24,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 277 transitions, 2974 flow [2021-11-09 09:35:24,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 277 transitions, 2801 flow, removed 36 selfloop flow, removed 22 redundant places. [2021-11-09 09:35:24,621 INFO L242 Difference]: Finished difference. Result has 343 places, 196 transitions, 1792 flow [2021-11-09 09:35:24,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1792, PETRI_PLACES=343, PETRI_TRANSITIONS=196} [2021-11-09 09:35:24,621 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-09 09:35:24,621 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 196 transitions, 1792 flow [2021-11-09 09:35:24,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:24,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:24,622 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:24,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-09 09:35:24,622 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1468081226, now seen corresponding path program 28 times [2021-11-09 09:35:24,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:24,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727801606] [2021-11-09 09:35:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:24,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:24,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:24,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727801606] [2021-11-09 09:35:24,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727801606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:24,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:24,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:24,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128330379] [2021-11-09 09:35:24,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:24,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:24,977 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:24,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 196 transitions, 1792 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:24,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:24,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:24,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:26,866 INFO L129 PetriNetUnfolder]: 328/1377 cut-off events. [2021-11-09 09:35:26,866 INFO L130 PetriNetUnfolder]: For 11389/11406 co-relation queries the response was YES. [2021-11-09 09:35:26,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 1377 events. 328/1377 cut-off events. For 11389/11406 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9311 event pairs, 164 based on Foata normal form. 2/1324 useless extension candidates. Maximal degree in co-relation 6422. Up to 392 conditions per place. [2021-11-09 09:35:26,893 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 169 selfloop transitions, 40 changer transitions 44/319 dead transitions. [2021-11-09 09:35:26,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 319 transitions, 3700 flow [2021-11-09 09:35:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:35:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-09 09:35:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2631 transitions. [2021-11-09 09:35:26,896 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5583616298811545 [2021-11-09 09:35:26,896 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2631 transitions. [2021-11-09 09:35:26,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2631 transitions. [2021-11-09 09:35:26,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:26,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2631 transitions. [2021-11-09 09:35:26,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 84.87096774193549) internal successors, (2631), 31 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:26,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:26,903 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:26,903 INFO L186 Difference]: Start difference. First operand has 343 places, 196 transitions, 1792 flow. Second operand 31 states and 2631 transitions. [2021-11-09 09:35:26,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 319 transitions, 3700 flow [2021-11-09 09:35:27,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 319 transitions, 3369 flow, removed 77 selfloop flow, removed 22 redundant places. [2021-11-09 09:35:27,038 INFO L242 Difference]: Finished difference. Result has 332 places, 203 transitions, 2012 flow [2021-11-09 09:35:27,039 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2012, PETRI_PLACES=332, PETRI_TRANSITIONS=203} [2021-11-09 09:35:27,039 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 196 predicate places. [2021-11-09 09:35:27,039 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 203 transitions, 2012 flow [2021-11-09 09:35:27,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:27,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:27,040 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:27,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-09 09:35:27,040 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1579297304, now seen corresponding path program 29 times [2021-11-09 09:35:27,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:27,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409274168] [2021-11-09 09:35:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:27,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:27,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:27,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409274168] [2021-11-09 09:35:27,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409274168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:27,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:27,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:27,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42979483] [2021-11-09 09:35:27,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:27,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:27,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:27,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 203 transitions, 2012 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:27,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:27,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:27,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:29,372 INFO L129 PetriNetUnfolder]: 327/1368 cut-off events. [2021-11-09 09:35:29,372 INFO L130 PetriNetUnfolder]: For 12333/12347 co-relation queries the response was YES. [2021-11-09 09:35:29,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 1368 events. 327/1368 cut-off events. For 12333/12347 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9163 event pairs, 148 based on Foata normal form. 2/1320 useless extension candidates. Maximal degree in co-relation 6490. Up to 392 conditions per place. [2021-11-09 09:35:29,398 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 170 selfloop transitions, 46 changer transitions 49/331 dead transitions. [2021-11-09 09:35:29,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 331 transitions, 3838 flow [2021-11-09 09:35:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 09:35:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-11-09 09:35:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2730 transitions. [2021-11-09 09:35:29,401 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.561266447368421 [2021-11-09 09:35:29,401 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2730 transitions. [2021-11-09 09:35:29,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2730 transitions. [2021-11-09 09:35:29,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:29,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2730 transitions. [2021-11-09 09:35:29,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.3125) internal successors, (2730), 32 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:29,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:29,408 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:29,408 INFO L186 Difference]: Start difference. First operand has 332 places, 203 transitions, 2012 flow. Second operand 32 states and 2730 transitions. [2021-11-09 09:35:29,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 331 transitions, 3838 flow [2021-11-09 09:35:29,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 331 transitions, 3591 flow, removed 111 selfloop flow, removed 25 redundant places. [2021-11-09 09:35:29,486 INFO L242 Difference]: Finished difference. Result has 342 places, 204 transitions, 2131 flow [2021-11-09 09:35:29,486 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2131, PETRI_PLACES=342, PETRI_TRANSITIONS=204} [2021-11-09 09:35:29,486 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 206 predicate places. [2021-11-09 09:35:29,487 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 204 transitions, 2131 flow [2021-11-09 09:35:29,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:29,487 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:29,487 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:29,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-09 09:35:29,487 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash -503897618, now seen corresponding path program 30 times [2021-11-09 09:35:29,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:29,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183910865] [2021-11-09 09:35:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:29,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:29,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:29,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183910865] [2021-11-09 09:35:29,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183910865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:29,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:29,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:29,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918190641] [2021-11-09 09:35:29,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:29,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:29,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:29,805 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:29,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 204 transitions, 2131 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:29,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:29,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:29,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:31,317 INFO L129 PetriNetUnfolder]: 321/1300 cut-off events. [2021-11-09 09:35:31,317 INFO L130 PetriNetUnfolder]: For 12743/12754 co-relation queries the response was YES. [2021-11-09 09:35:31,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6486 conditions, 1300 events. 321/1300 cut-off events. For 12743/12754 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8413 event pairs, 158 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 6350. Up to 392 conditions per place. [2021-11-09 09:35:31,344 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 138 selfloop transitions, 63 changer transitions 30/297 dead transitions. [2021-11-09 09:35:31,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 297 transitions, 3782 flow [2021-11-09 09:35:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:35:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-09 09:35:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2058 transitions. [2021-11-09 09:35:31,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5641447368421053 [2021-11-09 09:35:31,347 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2058 transitions. [2021-11-09 09:35:31,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2058 transitions. [2021-11-09 09:35:31,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:31,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2058 transitions. [2021-11-09 09:35:31,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.75) internal successors, (2058), 24 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,352 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,352 INFO L186 Difference]: Start difference. First operand has 342 places, 204 transitions, 2131 flow. Second operand 24 states and 2058 transitions. [2021-11-09 09:35:31,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 297 transitions, 3782 flow [2021-11-09 09:35:31,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 297 transitions, 3230 flow, removed 154 selfloop flow, removed 31 redundant places. [2021-11-09 09:35:31,427 INFO L242 Difference]: Finished difference. Result has 327 places, 223 transitions, 2406 flow [2021-11-09 09:35:31,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2406, PETRI_PLACES=327, PETRI_TRANSITIONS=223} [2021-11-09 09:35:31,428 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 191 predicate places. [2021-11-09 09:35:31,428 INFO L470 AbstractCegarLoop]: Abstraction has has 327 places, 223 transitions, 2406 flow [2021-11-09 09:35:31,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:31,428 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:31,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-09 09:35:31,428 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:31,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:31,429 INFO L85 PathProgramCache]: Analyzing trace with hash 41556406, now seen corresponding path program 31 times [2021-11-09 09:35:31,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:31,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180053533] [2021-11-09 09:35:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:31,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:31,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:31,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180053533] [2021-11-09 09:35:31,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180053533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:31,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:31,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:31,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781309075] [2021-11-09 09:35:31,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:31,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:31,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:31,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:31,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 223 transitions, 2406 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:31,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:31,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:33,638 INFO L129 PetriNetUnfolder]: 324/1328 cut-off events. [2021-11-09 09:35:33,638 INFO L130 PetriNetUnfolder]: For 10825/10852 co-relation queries the response was YES. [2021-11-09 09:35:33,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 1328 events. 324/1328 cut-off events. For 10825/10852 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8682 event pairs, 152 based on Foata normal form. 2/1279 useless extension candidates. Maximal degree in co-relation 6279. Up to 392 conditions per place. [2021-11-09 09:35:33,664 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 169 selfloop transitions, 54 changer transitions 42/331 dead transitions. [2021-11-09 09:35:33,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 331 transitions, 3964 flow [2021-11-09 09:35:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:35:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-09 09:35:33,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2643 transitions. [2021-11-09 09:35:33,667 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5609083191850595 [2021-11-09 09:35:33,667 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2643 transitions. [2021-11-09 09:35:33,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2643 transitions. [2021-11-09 09:35:33,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:33,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2643 transitions. [2021-11-09 09:35:33,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.25806451612904) internal successors, (2643), 31 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:33,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:33,674 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:33,674 INFO L186 Difference]: Start difference. First operand has 327 places, 223 transitions, 2406 flow. Second operand 31 states and 2643 transitions. [2021-11-09 09:35:33,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 331 transitions, 3964 flow [2021-11-09 09:35:33,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 331 transitions, 3417 flow, removed 187 selfloop flow, removed 16 redundant places. [2021-11-09 09:35:33,752 INFO L242 Difference]: Finished difference. Result has 353 places, 222 transitions, 2238 flow [2021-11-09 09:35:33,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2238, PETRI_PLACES=353, PETRI_TRANSITIONS=222} [2021-11-09 09:35:33,752 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 217 predicate places. [2021-11-09 09:35:33,752 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 222 transitions, 2238 flow [2021-11-09 09:35:33,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:33,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:33,753 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:33,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-09 09:35:33,753 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1368949130, now seen corresponding path program 32 times [2021-11-09 09:35:33,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:33,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366360049] [2021-11-09 09:35:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:33,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:34,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:34,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366360049] [2021-11-09 09:35:34,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366360049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:34,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:34,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:34,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843215341] [2021-11-09 09:35:34,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:34,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:34,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:34,129 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:34,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 222 transitions, 2238 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:34,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:34,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:34,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:36,119 INFO L129 PetriNetUnfolder]: 318/1298 cut-off events. [2021-11-09 09:35:36,120 INFO L130 PetriNetUnfolder]: For 9949/9965 co-relation queries the response was YES. [2021-11-09 09:35:36,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 1298 events. 318/1298 cut-off events. For 9949/9965 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8521 event pairs, 158 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 6077. Up to 392 conditions per place. [2021-11-09 09:35:36,143 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 150 selfloop transitions, 57 changer transitions 39/312 dead transitions. [2021-11-09 09:35:36,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 312 transitions, 3582 flow [2021-11-09 09:35:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:35:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-09 09:35:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2546 transitions. [2021-11-09 09:35:36,146 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2021-11-09 09:35:36,146 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2546 transitions. [2021-11-09 09:35:36,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2546 transitions. [2021-11-09 09:35:36,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:36,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2546 transitions. [2021-11-09 09:35:36,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 84.86666666666666) internal successors, (2546), 30 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:36,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:36,153 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:36,153 INFO L186 Difference]: Start difference. First operand has 353 places, 222 transitions, 2238 flow. Second operand 30 states and 2546 transitions. [2021-11-09 09:35:36,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 312 transitions, 3582 flow [2021-11-09 09:35:36,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 312 transitions, 3287 flow, removed 72 selfloop flow, removed 32 redundant places. [2021-11-09 09:35:36,225 INFO L242 Difference]: Finished difference. Result has 349 places, 224 transitions, 2263 flow [2021-11-09 09:35:36,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2263, PETRI_PLACES=349, PETRI_TRANSITIONS=224} [2021-11-09 09:35:36,225 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 213 predicate places. [2021-11-09 09:35:36,225 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 224 transitions, 2263 flow [2021-11-09 09:35:36,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:36,226 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:36,226 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:36,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-09 09:35:36,227 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash 55454270, now seen corresponding path program 33 times [2021-11-09 09:35:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:36,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188833620] [2021-11-09 09:35:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:36,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:36,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:36,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188833620] [2021-11-09 09:35:36,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188833620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:36,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:36,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:35:36,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801344085] [2021-11-09 09:35:36,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:36,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:36,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:36,523 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-09 09:35:36,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 224 transitions, 2263 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:36,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:36,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-09 09:35:36,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:38,165 INFO L129 PetriNetUnfolder]: 317/1286 cut-off events. [2021-11-09 09:35:38,165 INFO L130 PetriNetUnfolder]: For 9796/9808 co-relation queries the response was YES. [2021-11-09 09:35:38,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 1286 events. 317/1286 cut-off events. For 9796/9808 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8304 event pairs, 153 based on Foata normal form. 2/1240 useless extension candidates. Maximal degree in co-relation 6035. Up to 392 conditions per place. [2021-11-09 09:35:38,196 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 139 selfloop transitions, 62 changer transitions 32/299 dead transitions. [2021-11-09 09:35:38,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 299 transitions, 3403 flow [2021-11-09 09:35:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:35:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-09 09:35:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2217 transitions. [2021-11-09 09:35:38,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5609817813765182 [2021-11-09 09:35:38,199 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2217 transitions. [2021-11-09 09:35:38,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2217 transitions. [2021-11-09 09:35:38,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:38,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2217 transitions. [2021-11-09 09:35:38,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.26923076923077) internal successors, (2217), 26 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,205 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,205 INFO L186 Difference]: Start difference. First operand has 349 places, 224 transitions, 2263 flow. Second operand 26 states and 2217 transitions. [2021-11-09 09:35:38,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 299 transitions, 3403 flow [2021-11-09 09:35:38,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 299 transitions, 3219 flow, removed 46 selfloop flow, removed 24 redundant places. [2021-11-09 09:35:38,276 INFO L242 Difference]: Finished difference. Result has 343 places, 228 transitions, 2372 flow [2021-11-09 09:35:38,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2372, PETRI_PLACES=343, PETRI_TRANSITIONS=228} [2021-11-09 09:35:38,276 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-09 09:35:38,276 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 228 transitions, 2372 flow [2021-11-09 09:35:38,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,277 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:38,277 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:38,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-09 09:35:38,277 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:38,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash -317218292, now seen corresponding path program 34 times [2021-11-09 09:35:38,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:38,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828766378] [2021-11-09 09:35:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:38,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:38,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:38,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828766378] [2021-11-09 09:35:38,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828766378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:38,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:38,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:35:38,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904579456] [2021-11-09 09:35:38,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:35:38,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:38,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:35:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:38,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-09 09:35:38,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 228 transitions, 2372 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:38,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-09 09:35:38,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:38,488 INFO L129 PetriNetUnfolder]: 38/359 cut-off events. [2021-11-09 09:35:38,488 INFO L130 PetriNetUnfolder]: For 911/925 co-relation queries the response was YES. [2021-11-09 09:35:38,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 359 events. 38/359 cut-off events. For 911/925 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1367 event pairs, 25 based on Foata normal form. 4/348 useless extension candidates. Maximal degree in co-relation 971. Up to 38 conditions per place. [2021-11-09 09:35:38,493 INFO L132 encePairwiseOnDemand]: 147/152 looper letters, 22 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2021-11-09 09:35:38,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 129 transitions, 567 flow [2021-11-09 09:35:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:35:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:35:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2021-11-09 09:35:38,495 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8421052631578947 [2021-11-09 09:35:38,495 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2021-11-09 09:35:38,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2021-11-09 09:35:38,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:38,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2021-11-09 09:35:38,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,496 INFO L186 Difference]: Start difference. First operand has 343 places, 228 transitions, 2372 flow. Second operand 4 states and 512 transitions. [2021-11-09 09:35:38,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 129 transitions, 567 flow [2021-11-09 09:35:38,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 129 transitions, 482 flow, removed 21 selfloop flow, removed 22 redundant places. [2021-11-09 09:35:38,503 INFO L242 Difference]: Finished difference. Result has 242 places, 126 transitions, 419 flow [2021-11-09 09:35:38,503 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=419, PETRI_PLACES=242, PETRI_TRANSITIONS=126} [2021-11-09 09:35:38,503 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 106 predicate places. [2021-11-09 09:35:38,504 INFO L470 AbstractCegarLoop]: Abstraction has has 242 places, 126 transitions, 419 flow [2021-11-09 09:35:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,504 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:38,504 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:38,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-09 09:35:38,504 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:38,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1696237337, now seen corresponding path program 1 times [2021-11-09 09:35:38,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:38,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380506563] [2021-11-09 09:35:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:38,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:39,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:39,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380506563] [2021-11-09 09:35:39,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380506563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:39,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:39,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:35:39,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623873178] [2021-11-09 09:35:39,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:35:39,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:35:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:35:39,621 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:35:39,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 126 transitions, 419 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:39,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:39,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:35:39,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:35:47,099 INFO L129 PetriNetUnfolder]: 864/2472 cut-off events. [2021-11-09 09:35:47,099 INFO L130 PetriNetUnfolder]: For 4884/4884 co-relation queries the response was YES. [2021-11-09 09:35:47,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7093 conditions, 2472 events. 864/2472 cut-off events. For 4884/4884 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 16161 event pairs, 0 based on Foata normal form. 1/2420 useless extension candidates. Maximal degree in co-relation 6979. Up to 804 conditions per place. [2021-11-09 09:35:47,136 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 286 selfloop transitions, 45 changer transitions 55/438 dead transitions. [2021-11-09 09:35:47,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 438 transitions, 3011 flow [2021-11-09 09:35:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-09 09:35:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-11-09 09:35:47,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3599 transitions. [2021-11-09 09:35:47,140 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4642672858617131 [2021-11-09 09:35:47,140 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3599 transitions. [2021-11-09 09:35:47,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3599 transitions. [2021-11-09 09:35:47,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:35:47,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3599 transitions. [2021-11-09 09:35:47,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 70.56862745098039) internal successors, (3599), 51 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:47,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 152.0) internal successors, (7904), 52 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:47,150 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 152.0) internal successors, (7904), 52 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:47,150 INFO L186 Difference]: Start difference. First operand has 242 places, 126 transitions, 419 flow. Second operand 51 states and 3599 transitions. [2021-11-09 09:35:47,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 438 transitions, 3011 flow [2021-11-09 09:35:47,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 438 transitions, 3002 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 09:35:47,168 INFO L242 Difference]: Finished difference. Result has 335 places, 165 transitions, 1011 flow [2021-11-09 09:35:47,168 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1011, PETRI_PLACES=335, PETRI_TRANSITIONS=165} [2021-11-09 09:35:47,168 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-09 09:35:47,168 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 165 transitions, 1011 flow [2021-11-09 09:35:47,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:47,169 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:35:47,169 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:47,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-09 09:35:47,169 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:35:47,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash 424549617, now seen corresponding path program 2 times [2021-11-09 09:35:47,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:47,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643966138] [2021-11-09 09:35:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:47,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:48,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:48,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643966138] [2021-11-09 09:35:48,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643966138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:48,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:48,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:35:48,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257638620] [2021-11-09 09:35:48,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:35:48,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:35:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:35:48,270 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:35:48,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 165 transitions, 1011 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:48,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:35:48,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:35:48,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:36:01,564 INFO L129 PetriNetUnfolder]: 1212/3436 cut-off events. [2021-11-09 09:36:01,564 INFO L130 PetriNetUnfolder]: For 30067/30067 co-relation queries the response was YES. [2021-11-09 09:36:01,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14431 conditions, 3436 events. 1212/3436 cut-off events. For 30067/30067 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 24947 event pairs, 72 based on Foata normal form. 1/3345 useless extension candidates. Maximal degree in co-relation 14272. Up to 852 conditions per place. [2021-11-09 09:36:01,635 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 388 selfloop transitions, 42 changer transitions 155/637 dead transitions. [2021-11-09 09:36:01,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 637 transitions, 6455 flow [2021-11-09 09:36:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-09 09:36:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-11-09 09:36:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6063 transitions. [2021-11-09 09:36:01,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4532745215311005 [2021-11-09 09:36:01,640 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6063 transitions. [2021-11-09 09:36:01,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6063 transitions. [2021-11-09 09:36:01,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:36:01,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6063 transitions. [2021-11-09 09:36:01,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 68.89772727272727) internal successors, (6063), 88 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:01,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 152.0) internal successors, (13528), 89 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:01,657 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 152.0) internal successors, (13528), 89 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:01,657 INFO L186 Difference]: Start difference. First operand has 335 places, 165 transitions, 1011 flow. Second operand 88 states and 6063 transitions. [2021-11-09 09:36:01,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 637 transitions, 6455 flow [2021-11-09 09:36:01,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 637 transitions, 5282 flow, removed 581 selfloop flow, removed 27 redundant places. [2021-11-09 09:36:01,786 INFO L242 Difference]: Finished difference. Result has 453 places, 178 transitions, 1299 flow [2021-11-09 09:36:01,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=1299, PETRI_PLACES=453, PETRI_TRANSITIONS=178} [2021-11-09 09:36:01,787 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 317 predicate places. [2021-11-09 09:36:01,787 INFO L470 AbstractCegarLoop]: Abstraction has has 453 places, 178 transitions, 1299 flow [2021-11-09 09:36:01,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:01,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:36:01,787 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:01,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-09 09:36:01,788 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:36:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1113137701, now seen corresponding path program 3 times [2021-11-09 09:36:01,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:01,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617887990] [2021-11-09 09:36:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:01,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:02,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:02,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617887990] [2021-11-09 09:36:02,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617887990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:02,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:02,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:36:02,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069495784] [2021-11-09 09:36:02,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:36:02,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:36:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:36:02,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:36:02,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 178 transitions, 1299 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:02,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:36:02,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:36:02,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:36:19,621 INFO L129 PetriNetUnfolder]: 1204/3488 cut-off events. [2021-11-09 09:36:19,621 INFO L130 PetriNetUnfolder]: For 58596/58596 co-relation queries the response was YES. [2021-11-09 09:36:19,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19302 conditions, 3488 events. 1204/3488 cut-off events. For 58596/58596 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 25997 event pairs, 60 based on Foata normal form. 1/3453 useless extension candidates. Maximal degree in co-relation 19083. Up to 369 conditions per place. [2021-11-09 09:36:19,695 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 651 selfloop transitions, 35 changer transitions 176/914 dead transitions. [2021-11-09 09:36:19,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 914 transitions, 12037 flow [2021-11-09 09:36:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-09 09:36:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-11-09 09:36:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6073 transitions. [2021-11-09 09:36:19,700 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4540221291866029 [2021-11-09 09:36:19,700 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6073 transitions. [2021-11-09 09:36:19,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6073 transitions. [2021-11-09 09:36:19,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:36:19,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6073 transitions. [2021-11-09 09:36:19,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 69.01136363636364) internal successors, (6073), 88 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:19,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 152.0) internal successors, (13528), 89 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:19,715 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 152.0) internal successors, (13528), 89 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:19,715 INFO L186 Difference]: Start difference. First operand has 453 places, 178 transitions, 1299 flow. Second operand 88 states and 6073 transitions. [2021-11-09 09:36:19,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 914 transitions, 12037 flow [2021-11-09 09:36:20,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 914 transitions, 10721 flow, removed 635 selfloop flow, removed 45 redundant places. [2021-11-09 09:36:20,015 INFO L242 Difference]: Finished difference. Result has 496 places, 178 transitions, 1394 flow [2021-11-09 09:36:20,016 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=1394, PETRI_PLACES=496, PETRI_TRANSITIONS=178} [2021-11-09 09:36:20,016 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 360 predicate places. [2021-11-09 09:36:20,016 INFO L470 AbstractCegarLoop]: Abstraction has has 496 places, 178 transitions, 1394 flow [2021-11-09 09:36:20,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:20,017 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:36:20,017 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:20,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-09 09:36:20,017 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:36:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash 87263075, now seen corresponding path program 4 times [2021-11-09 09:36:20,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:20,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754143061] [2021-11-09 09:36:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:20,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:20,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:20,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754143061] [2021-11-09 09:36:20,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754143061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:20,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:20,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:36:20,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068374927] [2021-11-09 09:36:20,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:36:20,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:36:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:36:20,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 152 [2021-11-09 09:36:20,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 178 transitions, 1394 flow. Second operand has 28 states, 28 states have (on average 77.07142857142857) internal successors, (2158), 28 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:20,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:36:20,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 152 [2021-11-09 09:36:20,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:36:31,472 INFO L129 PetriNetUnfolder]: 1860/5437 cut-off events. [2021-11-09 09:36:31,473 INFO L130 PetriNetUnfolder]: For 88501/88508 co-relation queries the response was YES. [2021-11-09 09:36:31,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32043 conditions, 5437 events. 1860/5437 cut-off events. For 88501/88508 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 45208 event pairs, 184 based on Foata normal form. 3/5312 useless extension candidates. Maximal degree in co-relation 31795. Up to 1740 conditions per place. [2021-11-09 09:36:31,632 INFO L132 encePairwiseOnDemand]: 117/152 looper letters, 374 selfloop transitions, 31 changer transitions 174/645 dead transitions. [2021-11-09 09:36:31,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 645 transitions, 9378 flow [2021-11-09 09:36:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-09 09:36:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-11-09 09:36:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 6453 transitions. [2021-11-09 09:36:31,637 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5306743421052632 [2021-11-09 09:36:31,638 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 6453 transitions. [2021-11-09 09:36:31,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 6453 transitions. [2021-11-09 09:36:31,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:36:31,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 6453 transitions. [2021-11-09 09:36:31,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 80.6625) internal successors, (6453), 80 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:31,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 152.0) internal successors, (12312), 81 states have internal predecessors, (12312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:31,652 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 152.0) internal successors, (12312), 81 states have internal predecessors, (12312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:31,652 INFO L186 Difference]: Start difference. First operand has 496 places, 178 transitions, 1394 flow. Second operand 80 states and 6453 transitions. [2021-11-09 09:36:31,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 645 transitions, 9378 flow [2021-11-09 09:36:32,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 645 transitions, 8539 flow, removed 184 selfloop flow, removed 82 redundant places. [2021-11-09 09:36:32,153 INFO L242 Difference]: Finished difference. Result has 499 places, 200 transitions, 1961 flow [2021-11-09 09:36:32,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=1961, PETRI_PLACES=499, PETRI_TRANSITIONS=200} [2021-11-09 09:36:32,154 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 363 predicate places. [2021-11-09 09:36:32,154 INFO L470 AbstractCegarLoop]: Abstraction has has 499 places, 200 transitions, 1961 flow [2021-11-09 09:36:32,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 77.07142857142857) internal successors, (2158), 28 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:32,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:36:32,154 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:32,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-09 09:36:32,155 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:36:32,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:32,155 INFO L85 PathProgramCache]: Analyzing trace with hash 786110799, now seen corresponding path program 5 times [2021-11-09 09:36:32,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:32,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770029380] [2021-11-09 09:36:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:32,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:32,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:32,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770029380] [2021-11-09 09:36:32,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770029380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:32,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:32,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:36:32,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809840210] [2021-11-09 09:36:32,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:36:32,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:36:32,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:36:32,937 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:36:32,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 200 transitions, 1961 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:32,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:36:32,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:36:32,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:36:45,562 INFO L129 PetriNetUnfolder]: 1979/5944 cut-off events. [2021-11-09 09:36:45,562 INFO L130 PetriNetUnfolder]: For 195018/195021 co-relation queries the response was YES. [2021-11-09 09:36:45,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42156 conditions, 5944 events. 1979/5944 cut-off events. For 195018/195021 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 52030 event pairs, 136 based on Foata normal form. 1/5884 useless extension candidates. Maximal degree in co-relation 41898. Up to 656 conditions per place. [2021-11-09 09:36:45,763 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 678 selfloop transitions, 42 changer transitions 152/924 dead transitions. [2021-11-09 09:36:45,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 924 transitions, 15127 flow [2021-11-09 09:36:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-09 09:36:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-09 09:36:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5811 transitions. [2021-11-09 09:36:45,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.45512218045112784 [2021-11-09 09:36:45,770 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5811 transitions. [2021-11-09 09:36:45,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5811 transitions. [2021-11-09 09:36:45,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:36:45,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5811 transitions. [2021-11-09 09:36:45,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 69.17857142857143) internal successors, (5811), 84 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:45,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:45,791 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:45,791 INFO L186 Difference]: Start difference. First operand has 499 places, 200 transitions, 1961 flow. Second operand 84 states and 5811 transitions. [2021-11-09 09:36:45,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 924 transitions, 15127 flow [2021-11-09 09:36:46,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 924 transitions, 13235 flow, removed 884 selfloop flow, removed 48 redundant places. [2021-11-09 09:36:46,751 INFO L242 Difference]: Finished difference. Result has 539 places, 206 transitions, 2076 flow [2021-11-09 09:36:46,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2076, PETRI_PLACES=539, PETRI_TRANSITIONS=206} [2021-11-09 09:36:46,752 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 403 predicate places. [2021-11-09 09:36:46,752 INFO L470 AbstractCegarLoop]: Abstraction has has 539 places, 206 transitions, 2076 flow [2021-11-09 09:36:46,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:46,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:36:46,753 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:46,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-09 09:36:46,753 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:36:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash 931324477, now seen corresponding path program 6 times [2021-11-09 09:36:46,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:46,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590934780] [2021-11-09 09:36:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:46,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:47,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:47,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590934780] [2021-11-09 09:36:47,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590934780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:47,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:47,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:36:47,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328155954] [2021-11-09 09:36:47,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:36:47,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:36:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:36:47,708 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:36:47,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 206 transitions, 2076 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:47,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:36:47,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:36:47,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:37:06,571 INFO L129 PetriNetUnfolder]: 1974/5589 cut-off events. [2021-11-09 09:37:06,571 INFO L130 PetriNetUnfolder]: For 141363/141366 co-relation queries the response was YES. [2021-11-09 09:37:06,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39211 conditions, 5589 events. 1974/5589 cut-off events. For 141363/141366 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 46215 event pairs, 881 based on Foata normal form. 1/5465 useless extension candidates. Maximal degree in co-relation 38930. Up to 3031 conditions per place. [2021-11-09 09:37:06,765 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 473 selfloop transitions, 35 changer transitions 147/707 dead transitions. [2021-11-09 09:37:06,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 707 transitions, 11259 flow [2021-11-09 09:37:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-09 09:37:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-09 09:37:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5788 transitions. [2021-11-09 09:37:06,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4533208020050125 [2021-11-09 09:37:06,771 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5788 transitions. [2021-11-09 09:37:06,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5788 transitions. [2021-11-09 09:37:06,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:37:06,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5788 transitions. [2021-11-09 09:37:06,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 68.9047619047619) internal successors, (5788), 84 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:06,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:06,788 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:06,788 INFO L186 Difference]: Start difference. First operand has 539 places, 206 transitions, 2076 flow. Second operand 84 states and 5788 transitions. [2021-11-09 09:37:06,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 707 transitions, 11259 flow [2021-11-09 09:37:07,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 707 transitions, 10007 flow, removed 533 selfloop flow, removed 69 redundant places. [2021-11-09 09:37:07,615 INFO L242 Difference]: Finished difference. Result has 557 places, 209 transitions, 2199 flow [2021-11-09 09:37:07,615 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2199, PETRI_PLACES=557, PETRI_TRANSITIONS=209} [2021-11-09 09:37:07,615 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 421 predicate places. [2021-11-09 09:37:07,615 INFO L470 AbstractCegarLoop]: Abstraction has has 557 places, 209 transitions, 2199 flow [2021-11-09 09:37:07,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:07,616 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:37:07,616 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:07,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-09 09:37:07,616 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:37:07,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:07,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1936999971, now seen corresponding path program 7 times [2021-11-09 09:37:07,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:07,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706025985] [2021-11-09 09:37:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:07,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:37:08,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:08,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706025985] [2021-11-09 09:37:08,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706025985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:08,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:08,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:37:08,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576251933] [2021-11-09 09:37:08,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:37:08,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:08,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:37:08,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:37:08,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:37:08,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 209 transitions, 2199 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:08,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:37:08,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:37:08,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:37:28,847 INFO L129 PetriNetUnfolder]: 2591/7460 cut-off events. [2021-11-09 09:37:28,847 INFO L130 PetriNetUnfolder]: For 262191/262191 co-relation queries the response was YES. [2021-11-09 09:37:29,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58360 conditions, 7460 events. 2591/7460 cut-off events. For 262191/262191 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 66540 event pairs, 695 based on Foata normal form. 1/7296 useless extension candidates. Maximal degree in co-relation 58071. Up to 1647 conditions per place. [2021-11-09 09:37:29,259 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 476 selfloop transitions, 31 changer transitions 103/662 dead transitions. [2021-11-09 09:37:29,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 662 transitions, 11573 flow [2021-11-09 09:37:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-09 09:37:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-11-09 09:37:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 5050 transitions. [2021-11-09 09:37:29,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4614400584795322 [2021-11-09 09:37:29,264 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 5050 transitions. [2021-11-09 09:37:29,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 5050 transitions. [2021-11-09 09:37:29,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:37:29,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 5050 transitions. [2021-11-09 09:37:29,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 70.13888888888889) internal successors, (5050), 72 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:29,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 152.0) internal successors, (11096), 73 states have internal predecessors, (11096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:29,278 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 152.0) internal successors, (11096), 73 states have internal predecessors, (11096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:29,278 INFO L186 Difference]: Start difference. First operand has 557 places, 209 transitions, 2199 flow. Second operand 72 states and 5050 transitions. [2021-11-09 09:37:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 662 transitions, 11573 flow [2021-11-09 09:37:30,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 662 transitions, 10374 flow, removed 581 selfloop flow, removed 65 redundant places. [2021-11-09 09:37:30,836 INFO L242 Difference]: Finished difference. Result has 564 places, 228 transitions, 2704 flow [2021-11-09 09:37:30,837 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=2704, PETRI_PLACES=564, PETRI_TRANSITIONS=228} [2021-11-09 09:37:30,837 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 428 predicate places. [2021-11-09 09:37:30,837 INFO L470 AbstractCegarLoop]: Abstraction has has 564 places, 228 transitions, 2704 flow [2021-11-09 09:37:30,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:30,837 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:37:30,838 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:30,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-09 09:37:30,838 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:37:30,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash 133363451, now seen corresponding path program 8 times [2021-11-09 09:37:30,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:30,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103672378] [2021-11-09 09:37:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:30,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:37:31,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:31,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103672378] [2021-11-09 09:37:31,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103672378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:31,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:31,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:37:31,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105653801] [2021-11-09 09:37:31,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:37:31,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:31,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:37:31,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:37:31,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:37:31,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 228 transitions, 2704 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:31,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:37:31,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:37:31,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:37:48,053 INFO L129 PetriNetUnfolder]: 2707/7933 cut-off events. [2021-11-09 09:37:48,054 INFO L130 PetriNetUnfolder]: For 365804/365815 co-relation queries the response was YES. [2021-11-09 09:37:48,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67400 conditions, 7933 events. 2707/7933 cut-off events. For 365804/365815 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 73529 event pairs, 256 based on Foata normal form. 4/7844 useless extension candidates. Maximal degree in co-relation 67101. Up to 1403 conditions per place. [2021-11-09 09:37:48,512 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 655 selfloop transitions, 59 changer transitions 157/923 dead transitions. [2021-11-09 09:37:48,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 923 transitions, 16466 flow [2021-11-09 09:37:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-09 09:37:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-09 09:37:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5810 transitions. [2021-11-09 09:37:48,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4550438596491228 [2021-11-09 09:37:48,517 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5810 transitions. [2021-11-09 09:37:48,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5810 transitions. [2021-11-09 09:37:48,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:37:48,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5810 transitions. [2021-11-09 09:37:48,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 69.16666666666667) internal successors, (5810), 84 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:48,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:48,533 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:48,533 INFO L186 Difference]: Start difference. First operand has 564 places, 228 transitions, 2704 flow. Second operand 84 states and 5810 transitions. [2021-11-09 09:37:48,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 923 transitions, 16466 flow [2021-11-09 09:37:50,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 923 transitions, 14974 flow, removed 719 selfloop flow, removed 51 redundant places. [2021-11-09 09:37:50,489 INFO L242 Difference]: Finished difference. Result has 616 places, 235 transitions, 2926 flow [2021-11-09 09:37:50,490 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2926, PETRI_PLACES=616, PETRI_TRANSITIONS=235} [2021-11-09 09:37:50,490 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 480 predicate places. [2021-11-09 09:37:50,490 INFO L470 AbstractCegarLoop]: Abstraction has has 616 places, 235 transitions, 2926 flow [2021-11-09 09:37:50,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:50,490 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:37:50,491 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:50,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-09 09:37:50,491 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:37:50,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1077480557, now seen corresponding path program 9 times [2021-11-09 09:37:50,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:50,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448279319] [2021-11-09 09:37:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:50,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:37:51,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:51,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448279319] [2021-11-09 09:37:51,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448279319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:51,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:51,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:37:51,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918882449] [2021-11-09 09:37:51,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:37:51,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:51,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:37:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:37:51,605 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:37:51,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 235 transitions, 2926 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:51,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:37:51,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:37:51,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:38:10,888 INFO L129 PetriNetUnfolder]: 2702/7857 cut-off events. [2021-11-09 09:38:10,888 INFO L130 PetriNetUnfolder]: For 301816/301822 co-relation queries the response was YES. [2021-11-09 09:38:11,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64828 conditions, 7857 events. 2702/7857 cut-off events. For 301816/301822 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 70934 event pairs, 1654 based on Foata normal form. 1/7700 useless extension candidates. Maximal degree in co-relation 64505. Up to 2305 conditions per place. [2021-11-09 09:38:11,235 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 472 selfloop transitions, 26 changer transitions 142/692 dead transitions. [2021-11-09 09:38:11,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 692 transitions, 13025 flow [2021-11-09 09:38:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-09 09:38:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-09 09:38:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5840 transitions. [2021-11-09 09:38:11,240 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4573934837092732 [2021-11-09 09:38:11,240 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5840 transitions. [2021-11-09 09:38:11,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5840 transitions. [2021-11-09 09:38:11,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:38:11,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5840 transitions. [2021-11-09 09:38:11,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 69.52380952380952) internal successors, (5840), 84 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:11,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:11,256 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:11,256 INFO L186 Difference]: Start difference. First operand has 616 places, 235 transitions, 2926 flow. Second operand 84 states and 5840 transitions. [2021-11-09 09:38:11,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 692 transitions, 13025 flow [2021-11-09 09:38:13,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 692 transitions, 12342 flow, removed 243 selfloop flow, removed 64 redundant places. [2021-11-09 09:38:13,279 INFO L242 Difference]: Finished difference. Result has 649 places, 248 transitions, 3265 flow [2021-11-09 09:38:13,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3265, PETRI_PLACES=649, PETRI_TRANSITIONS=248} [2021-11-09 09:38:13,280 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 513 predicate places. [2021-11-09 09:38:13,280 INFO L470 AbstractCegarLoop]: Abstraction has has 649 places, 248 transitions, 3265 flow [2021-11-09 09:38:13,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:13,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:38:13,280 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:13,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-09 09:38:13,280 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:38:13,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash 782567281, now seen corresponding path program 10 times [2021-11-09 09:38:13,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:13,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273993598] [2021-11-09 09:38:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:13,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:14,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:14,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273993598] [2021-11-09 09:38:14,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273993598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:14,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:14,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:38:14,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24189418] [2021-11-09 09:38:14,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:38:14,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:38:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:38:14,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:38:14,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 248 transitions, 3265 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:14,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:38:14,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:38:14,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:38:29,267 INFO L129 PetriNetUnfolder]: 2819/8185 cut-off events. [2021-11-09 09:38:29,267 INFO L130 PetriNetUnfolder]: For 477624/477639 co-relation queries the response was YES. [2021-11-09 09:38:29,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77574 conditions, 8185 events. 2819/8185 cut-off events. For 477624/477639 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 75656 event pairs, 306 based on Foata normal form. 6/8082 useless extension candidates. Maximal degree in co-relation 77228. Up to 2083 conditions per place. [2021-11-09 09:38:29,751 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 630 selfloop transitions, 87 changer transitions 75/844 dead transitions. [2021-11-09 09:38:29,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 844 transitions, 17462 flow [2021-11-09 09:38:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-09 09:38:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-11-09 09:38:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3138 transitions. [2021-11-09 09:38:29,754 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.46919856459330145 [2021-11-09 09:38:29,754 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3138 transitions. [2021-11-09 09:38:29,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3138 transitions. [2021-11-09 09:38:29,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:38:29,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3138 transitions. [2021-11-09 09:38:29,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 71.31818181818181) internal successors, (3138), 44 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:29,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 152.0) internal successors, (6840), 45 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:29,762 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 152.0) internal successors, (6840), 45 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:29,762 INFO L186 Difference]: Start difference. First operand has 649 places, 248 transitions, 3265 flow. Second operand 44 states and 3138 transitions. [2021-11-09 09:38:29,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 844 transitions, 17462 flow [2021-11-09 09:38:32,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 844 transitions, 15787 flow, removed 826 selfloop flow, removed 69 redundant places. [2021-11-09 09:38:32,856 INFO L242 Difference]: Finished difference. Result has 590 places, 292 transitions, 4497 flow [2021-11-09 09:38:32,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4497, PETRI_PLACES=590, PETRI_TRANSITIONS=292} [2021-11-09 09:38:32,856 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 454 predicate places. [2021-11-09 09:38:32,857 INFO L470 AbstractCegarLoop]: Abstraction has has 590 places, 292 transitions, 4497 flow [2021-11-09 09:38:32,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:32,857 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:38:32,857 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:32,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-09 09:38:32,857 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:38:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1389230117, now seen corresponding path program 11 times [2021-11-09 09:38:32,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:32,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136096439] [2021-11-09 09:38:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:32,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:33,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:33,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136096439] [2021-11-09 09:38:33,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136096439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:33,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:33,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:38:33,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243748142] [2021-11-09 09:38:33,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:38:33,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:33,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:38:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:38:33,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-09 09:38:33,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 292 transitions, 4497 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:33,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:38:33,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-09 09:38:33,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:38:53,300 INFO L129 PetriNetUnfolder]: 2953/8229 cut-off events. [2021-11-09 09:38:53,300 INFO L130 PetriNetUnfolder]: For 382339/382353 co-relation queries the response was YES. [2021-11-09 09:38:53,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75005 conditions, 8229 events. 2953/8229 cut-off events. For 382339/382353 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 73360 event pairs, 1693 based on Foata normal form. 1/8032 useless extension candidates. Maximal degree in co-relation 74692. Up to 4436 conditions per place. [2021-11-09 09:38:53,793 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 532 selfloop transitions, 43 changer transitions 129/756 dead transitions. [2021-11-09 09:38:53,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 756 transitions, 15963 flow [2021-11-09 09:38:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-09 09:38:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-11-09 09:38:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 5544 transitions. [2021-11-09 09:38:53,798 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.45592105263157895 [2021-11-09 09:38:53,798 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 5544 transitions. [2021-11-09 09:38:53,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 5544 transitions. [2021-11-09 09:38:53,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:38:53,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 5544 transitions. [2021-11-09 09:38:53,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 69.3) internal successors, (5544), 80 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:53,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 152.0) internal successors, (12312), 81 states have internal predecessors, (12312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:53,812 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 152.0) internal successors, (12312), 81 states have internal predecessors, (12312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:53,812 INFO L186 Difference]: Start difference. First operand has 590 places, 292 transitions, 4497 flow. Second operand 80 states and 5544 transitions. [2021-11-09 09:38:53,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 756 transitions, 15963 flow [2021-11-09 09:38:56,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 756 transitions, 14620 flow, removed 566 selfloop flow, removed 28 redundant places. [2021-11-09 09:38:56,697 INFO L242 Difference]: Finished difference. Result has 690 places, 301 transitions, 4296 flow [2021-11-09 09:38:56,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=4296, PETRI_PLACES=690, PETRI_TRANSITIONS=301} [2021-11-09 09:38:56,698 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 554 predicate places. [2021-11-09 09:38:56,698 INFO L470 AbstractCegarLoop]: Abstraction has has 690 places, 301 transitions, 4296 flow [2021-11-09 09:38:56,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:56,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:38:56,698 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:56,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-09 09:38:56,698 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-09 09:38:56,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash -758318145, now seen corresponding path program 12 times [2021-11-09 09:38:56,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:56,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023079140] [2021-11-09 09:38:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:56,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:57,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:57,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023079140] [2021-11-09 09:38:57,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023079140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:57,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:57,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-09 09:38:57,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489503428] [2021-11-09 09:38:57,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:38:57,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:57,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:38:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:38:57,463 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 152 [2021-11-09 09:38:57,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 301 transitions, 4296 flow. Second operand has 28 states, 28 states have (on average 77.07142857142857) internal successors, (2158), 28 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:57,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:38:57,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 152 [2021-11-09 09:38:57,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand