./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/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_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF --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-53f42b1 [2021-11-20 07:10:35,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:10:35,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:10:35,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:10:35,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:10:35,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:10:35,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:10:35,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:10:35,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:10:35,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:10:35,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:10:35,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:10:35,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:10:35,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:10:35,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:10:35,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:10:35,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:10:35,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:10:35,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:10:35,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:10:35,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:10:35,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:10:35,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:10:35,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:10:35,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:10:35,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:10:35,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:10:35,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:10:35,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:10:35,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:10:35,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:10:35,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:10:35,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:10:35,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:10:35,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:10:35,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:10:35,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:10:35,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:10:35,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:10:35,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:10:35,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:10:35,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:10:35,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:10:35,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:10:35,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:10:35,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:10:35,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:10:35,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:10:35,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:10:35,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:10:35,392 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:10:35,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:10:35,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:10:35,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:10:35,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:10:35,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:10:35,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:10:35,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:10:35,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:10:35,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:10:35,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:10:35,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:10:35,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:10:35,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:10:35,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:10:35,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:10:35,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:10:35,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:10:35,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:10:35,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:10:35,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:10:35,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:10:35,396 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:10:35,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:10:35,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:10:35,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:10:35,397 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_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2021-11-20 07:10:35,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:10:35,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:10:35,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:10:35,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:10:35,685 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:10:35,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-11-20 07:10:35,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/data/a20e72e3f/c3740e1dddac410fa935b695c01d80cf/FLAG4822390c8 [2021-11-20 07:10:36,243 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:10:36,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-11-20 07:10:36,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/data/a20e72e3f/c3740e1dddac410fa935b695c01d80cf/FLAG4822390c8 [2021-11-20 07:10:36,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/data/a20e72e3f/c3740e1dddac410fa935b695c01d80cf [2021-11-20 07:10:36,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:10:36,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:10:36,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:36,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:10:36,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:10:36,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:36,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577a8059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36, skipping insertion in model container [2021-11-20 07:10:36,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:36,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:10:36,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:10:36,898 WARN L230 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_5f775ecf-e23a-442d-90f1-75fa8bb516db/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-11-20 07:10:36,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:36,913 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:10:36,936 WARN L230 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_5f775ecf-e23a-442d-90f1-75fa8bb516db/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-11-20 07:10:36,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:36,954 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:10:36,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36 WrapperNode [2021-11-20 07:10:36,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:36,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:10:36,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:10:36,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:10:36,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:36,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:36,999 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2021-11-20 07:10:37,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:10:37,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:10:37,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:10:37,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:10:37,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:37,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:37,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:37,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:37,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:37,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:37,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:37,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:10:37,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:10:37,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:10:37,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:10:37,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (1/1) ... [2021-11-20 07:10:37,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:10:37,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:37,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:10:37,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f775ecf-e23a-442d-90f1-75fa8bb516db/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:10:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:10:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 07:10:37,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 07:10:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 07:10:37,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 07:10:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:10:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:10:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:10:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:10:37,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:10:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:10:37,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:10:37,126 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 07:10:37,212 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:10:37,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:10:37,560 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:10:37,572 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:10:37,572 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:10:37,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:37 BoogieIcfgContainer [2021-11-20 07:10:37,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:10:37,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:10:37,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:10:37,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:10:37,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:10:36" (1/3) ... [2021-11-20 07:10:37,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41734e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:10:37, skipping insertion in model container [2021-11-20 07:10:37,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:36" (2/3) ... [2021-11-20 07:10:37,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41734e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:10:37, skipping insertion in model container [2021-11-20 07:10:37,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:37" (3/3) ... [2021-11-20 07:10:37,584 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2021-11-20 07:10:37,590 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 07:10:37,590 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:10:37,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:10:37,591 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 07:10:37,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,644 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,645 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,675 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,675 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,692 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,692 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,692 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,692 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,692 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,693 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,693 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,693 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,693 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,693 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,694 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,694 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,694 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,694 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,694 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,698 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,698 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,698 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,698 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,709 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,709 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,709 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,710 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,710 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,710 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,710 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,710 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,711 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,711 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,711 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,711 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,712 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,712 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,712 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,712 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,716 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,716 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,731 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,733 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,735 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,735 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,736 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,742 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,742 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,742 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,742 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,743 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,743 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,744 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:10:37,757 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-20 07:10:37,827 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:10:37,835 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 [2021-11-20 07:10:37,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 07:10:37,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2021-11-20 07:10:37,936 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2021-11-20 07:10:37,937 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 07:10:37,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-11-20 07:10:37,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2021-11-20 07:10:37,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2021-11-20 07:10:38,072 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2021-11-20 07:10:38,073 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 07:10:38,073 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:38,074 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] [2021-11-20 07:10:38,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2021-11-20 07:10:38,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:38,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907873974] [2021-11-20 07:10:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:38,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:38,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:38,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907873974] [2021-11-20 07:10:38,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907873974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:38,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:38,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 07:10:38,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864310455] [2021-11-20 07:10:38,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:38,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:10:38,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:10:38,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:10:38,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2021-11-20 07:10:38,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:38,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:38,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2021-11-20 07:10:38,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:38,993 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2021-11-20 07:10:38,994 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-11-20 07:10:38,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1990 event pairs, 12 based on Foata normal form. 24/420 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2021-11-20 07:10:39,002 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2021-11-20 07:10:39,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2021-11-20 07:10:39,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:10:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-20 07:10:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2021-11-20 07:10:39,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-11-20 07:10:39,026 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2021-11-20 07:10:39,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2021-11-20 07:10:39,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:39,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2021-11-20 07:10:39,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,106 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,107 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2021-11-20 07:10:39,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2021-11-20 07:10:39,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 07:10:39,122 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2021-11-20 07:10:39,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2021-11-20 07:10:39,128 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2021-11-20 07:10:39,128 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2021-11-20 07:10:39,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:39,130 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] [2021-11-20 07:10:39,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:10:39,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1258678119, now seen corresponding path program 1 times [2021-11-20 07:10:39,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:39,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757890185] [2021-11-20 07:10:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:39,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:39,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757890185] [2021-11-20 07:10:39,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757890185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:39,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:39,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:10:39,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840300768] [2021-11-20 07:10:39,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:39,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:39,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:39,356 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-11-20 07:10:39,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:39,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-11-20 07:10:39,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:39,616 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-11-20 07:10:39,616 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2021-11-20 07:10:39,616 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-11-20 07:10:39,618 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2021-11-20 07:10:39,618 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-11-20 07:10:39,620 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-11-20 07:10:39,620 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2021-11-20 07:10:39,621 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-11-20 07:10:39,621 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-11-20 07:10:39,621 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2021-11-20 07:10:39,622 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-11-20 07:10:39,622 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2021-11-20 07:10:39,622 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2021-11-20 07:10:39,622 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-11-20 07:10:39,622 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2021-11-20 07:10:39,623 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-11-20 07:10:39,624 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 149#L44-19true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-11-20 07:10:39,625 INFO L384 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2021-11-20 07:10:39,625 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2021-11-20 07:10:39,625 INFO L387 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2021-11-20 07:10:39,625 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-20 07:10:39,626 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-11-20 07:10:39,626 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2021-11-20 07:10:39,626 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-11-20 07:10:39,627 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-11-20 07:10:39,627 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2021-11-20 07:10:39,627 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2021-11-20 07:10:39,629 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, 149#L44-19true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-11-20 07:10:39,630 INFO L384 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2021-11-20 07:10:39,630 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2021-11-20 07:10:39,630 INFO L387 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2021-11-20 07:10:39,631 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-20 07:10:39,632 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2021-11-20 07:10:39,690 INFO L129 PetriNetUnfolder]: 107/1061 cut-off events. [2021-11-20 07:10:39,693 INFO L130 PetriNetUnfolder]: For 300/315 co-relation queries the response was YES. [2021-11-20 07:10:39,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1061 events. 107/1061 cut-off events. For 300/315 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8010 event pairs, 17 based on Foata normal form. 6/964 useless extension candidates. Maximal degree in co-relation 1533. Up to 89 conditions per place. [2021-11-20 07:10:39,706 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 31 selfloop transitions, 12 changer transitions 1/185 dead transitions. [2021-11-20 07:10:39,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 185 transitions, 531 flow [2021-11-20 07:10:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:10:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 07:10:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2021-11-20 07:10:39,709 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2021-11-20 07:10:39,710 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2021-11-20 07:10:39,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2021-11-20 07:10:39,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:39,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2021-11-20 07:10:39,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,722 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,722 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 4 states and 630 transitions. [2021-11-20 07:10:39,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 185 transitions, 531 flow [2021-11-20 07:10:39,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 185 transitions, 520 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-11-20 07:10:39,740 INFO L242 Difference]: Finished difference. Result has 168 places, 171 transitions, 466 flow [2021-11-20 07:10:39,741 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2021-11-20 07:10:39,741 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 11 predicate places. [2021-11-20 07:10:39,742 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 466 flow [2021-11-20 07:10:39,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:39,743 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:39,743 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] [2021-11-20 07:10:39,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:10:39,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash 405844717, now seen corresponding path program 2 times [2021-11-20 07:10:39,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:39,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647211885] [2021-11-20 07:10:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:39,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:39,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:39,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647211885] [2021-11-20 07:10:39,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647211885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:39,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:39,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:10:39,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782977765] [2021-11-20 07:10:39,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:39,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:39,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:40,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-11-20 07:10:40,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:40,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-11-20 07:10:40,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:40,230 INFO L129 PetriNetUnfolder]: 91/972 cut-off events. [2021-11-20 07:10:40,230 INFO L130 PetriNetUnfolder]: For 263/282 co-relation queries the response was YES. [2021-11-20 07:10:40,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 972 events. 91/972 cut-off events. For 263/282 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7097 event pairs, 25 based on Foata normal form. 12/929 useless extension candidates. Maximal degree in co-relation 1251. Up to 106 conditions per place. [2021-11-20 07:10:40,239 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 37 selfloop transitions, 8 changer transitions 3/189 dead transitions. [2021-11-20 07:10:40,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 189 transitions, 634 flow [2021-11-20 07:10:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:10:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 07:10:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2021-11-20 07:10:40,243 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2021-11-20 07:10:40,243 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2021-11-20 07:10:40,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2021-11-20 07:10:40,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:40,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2021-11-20 07:10:40,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,250 INFO L186 Difference]: Start difference. First operand has 168 places, 171 transitions, 466 flow. Second operand 4 states and 624 transitions. [2021-11-20 07:10:40,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 189 transitions, 634 flow [2021-11-20 07:10:40,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 189 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 07:10:40,263 INFO L242 Difference]: Finished difference. Result has 174 places, 176 transitions, 540 flow [2021-11-20 07:10:40,264 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=540, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2021-11-20 07:10:40,266 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 17 predicate places. [2021-11-20 07:10:40,266 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 540 flow [2021-11-20 07:10:40,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,272 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:40,272 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] [2021-11-20 07:10:40,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:10:40,272 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:40,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1435280407, now seen corresponding path program 1 times [2021-11-20 07:10:40,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:40,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122919916] [2021-11-20 07:10:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:40,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:40,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:40,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122919916] [2021-11-20 07:10:40,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122919916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:40,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:40,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:10:40,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802640340] [2021-11-20 07:10:40,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:40,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:40,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:40,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:40,476 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-11-20 07:10:40,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:40,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-11-20 07:10:40,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:40,763 INFO L129 PetriNetUnfolder]: 92/1151 cut-off events. [2021-11-20 07:10:40,763 INFO L130 PetriNetUnfolder]: For 422/443 co-relation queries the response was YES. [2021-11-20 07:10:40,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 1151 events. 92/1151 cut-off events. For 422/443 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8351 event pairs, 20 based on Foata normal form. 9/1104 useless extension candidates. Maximal degree in co-relation 1503. Up to 71 conditions per place. [2021-11-20 07:10:40,775 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 41 selfloop transitions, 11 changer transitions 3/196 dead transitions. [2021-11-20 07:10:40,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 196 transitions, 738 flow [2021-11-20 07:10:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:10:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 07:10:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2021-11-20 07:10:40,778 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8994252873563219 [2021-11-20 07:10:40,778 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2021-11-20 07:10:40,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2021-11-20 07:10:40,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:40,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2021-11-20 07:10:40,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,784 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,784 INFO L186 Difference]: Start difference. First operand has 174 places, 176 transitions, 540 flow. Second operand 4 states and 626 transitions. [2021-11-20 07:10:40,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 196 transitions, 738 flow [2021-11-20 07:10:40,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 196 transitions, 738 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 07:10:40,795 INFO L242 Difference]: Finished difference. Result has 179 places, 179 transitions, 602 flow [2021-11-20 07:10:40,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=179, PETRI_TRANSITIONS=179} [2021-11-20 07:10:40,797 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 22 predicate places. [2021-11-20 07:10:40,798 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 179 transitions, 602 flow [2021-11-20 07:10:40,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,798 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:40,798 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] [2021-11-20 07:10:40,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:10:40,799 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1986427037, now seen corresponding path program 2 times [2021-11-20 07:10:40,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:40,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850245861] [2021-11-20 07:10:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:40,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:40,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:40,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850245861] [2021-11-20 07:10:40,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850245861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:40,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:40,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:10:40,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182124342] [2021-11-20 07:10:40,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:40,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:40,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:40,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:40,905 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-11-20 07:10:40,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 179 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:40,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-11-20 07:10:40,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:41,148 INFO L129 PetriNetUnfolder]: 87/1121 cut-off events. [2021-11-20 07:10:41,149 INFO L130 PetriNetUnfolder]: For 611/629 co-relation queries the response was YES. [2021-11-20 07:10:41,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1121 events. 87/1121 cut-off events. For 611/629 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7928 event pairs, 26 based on Foata normal form. 13/1084 useless extension candidates. Maximal degree in co-relation 1551. Up to 91 conditions per place. [2021-11-20 07:10:41,158 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 42 selfloop transitions, 13 changer transitions 3/199 dead transitions. [2021-11-20 07:10:41,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 199 transitions, 826 flow [2021-11-20 07:10:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:10:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 07:10:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2021-11-20 07:10:41,161 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2021-11-20 07:10:41,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2021-11-20 07:10:41,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2021-11-20 07:10:41,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:41,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2021-11-20 07:10:41,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,167 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,167 INFO L186 Difference]: Start difference. First operand has 179 places, 179 transitions, 602 flow. Second operand 4 states and 624 transitions. [2021-11-20 07:10:41,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 199 transitions, 826 flow [2021-11-20 07:10:41,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 199 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 07:10:41,178 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 698 flow [2021-11-20 07:10:41,179 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2021-11-20 07:10:41,181 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2021-11-20 07:10:41,182 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 698 flow [2021-11-20 07:10:41,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,183 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:41,183 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] [2021-11-20 07:10:41,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:10:41,183 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash 172723029, now seen corresponding path program 3 times [2021-11-20 07:10:41,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:41,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905364800] [2021-11-20 07:10:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:41,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:41,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:41,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905364800] [2021-11-20 07:10:41,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905364800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:41,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:41,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:10:41,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619029186] [2021-11-20 07:10:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:41,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:41,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:41,299 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-11-20 07:10:41,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:41,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-11-20 07:10:41,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:41,526 INFO L129 PetriNetUnfolder]: 77/1089 cut-off events. [2021-11-20 07:10:41,526 INFO L130 PetriNetUnfolder]: For 686/698 co-relation queries the response was YES. [2021-11-20 07:10:41,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 1089 events. 77/1089 cut-off events. For 686/698 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7531 event pairs, 22 based on Foata normal form. 9/1046 useless extension candidates. Maximal degree in co-relation 1530. Up to 91 conditions per place. [2021-11-20 07:10:41,536 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 40 selfloop transitions, 16 changer transitions 3/200 dead transitions. [2021-11-20 07:10:41,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 200 transitions, 888 flow [2021-11-20 07:10:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:10:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 07:10:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2021-11-20 07:10:41,540 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2021-11-20 07:10:41,540 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2021-11-20 07:10:41,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2021-11-20 07:10:41,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:41,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2021-11-20 07:10:41,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,545 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,546 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 698 flow. Second operand 4 states and 624 transitions. [2021-11-20 07:10:41,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 200 transitions, 888 flow [2021-11-20 07:10:41,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 200 transitions, 864 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-20 07:10:41,557 INFO L242 Difference]: Finished difference. Result has 185 places, 188 transitions, 759 flow [2021-11-20 07:10:41,558 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=759, PETRI_PLACES=185, PETRI_TRANSITIONS=188} [2021-11-20 07:10:41,560 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 28 predicate places. [2021-11-20 07:10:41,561 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 188 transitions, 759 flow [2021-11-20 07:10:41,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:41,562 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, 1, 1, 1, 1, 1] [2021-11-20 07:10:41,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:10:41,562 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:41,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash -958876555, now seen corresponding path program 3 times [2021-11-20 07:10:41,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:41,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587865141] [2021-11-20 07:10:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:41,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:41,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:41,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587865141] [2021-11-20 07:10:41,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587865141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:41,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:41,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:10:41,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147960291] [2021-11-20 07:10:41,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:41,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:41,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:41,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:41,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:41,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-11-20 07:10:41,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 759 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:41,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-11-20 07:10:41,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:41,910 INFO L129 PetriNetUnfolder]: 70/1026 cut-off events. [2021-11-20 07:10:41,911 INFO L130 PetriNetUnfolder]: For 709/718 co-relation queries the response was YES. [2021-11-20 07:10:41,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1026 events. 70/1026 cut-off events. For 709/718 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6946 event pairs, 24 based on Foata normal form. 5/984 useless extension candidates. Maximal degree in co-relation 1504. Up to 53 conditions per place. [2021-11-20 07:10:41,920 INFO L132 encePairwiseOnDemand]: 161/174 looper letters, 45 selfloop transitions, 21 changer transitions 5/210 dead transitions. [2021-11-20 07:10:41,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 210 transitions, 998 flow [2021-11-20 07:10:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:10:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-20 07:10:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2021-11-20 07:10:41,924 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8988505747126436 [2021-11-20 07:10:41,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2021-11-20 07:10:41,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2021-11-20 07:10:41,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:41,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2021-11-20 07:10:41,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,931 INFO L186 Difference]: Start difference. First operand has 185 places, 188 transitions, 759 flow. Second operand 5 states and 782 transitions. [2021-11-20 07:10:41,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 210 transitions, 998 flow [2021-11-20 07:10:41,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 210 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 07:10:41,944 INFO L242 Difference]: Finished difference. Result has 191 places, 192 transitions, 870 flow [2021-11-20 07:10:41,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=191, PETRI_TRANSITIONS=192} [2021-11-20 07:10:41,945 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 34 predicate places. [2021-11-20 07:10:41,945 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 192 transitions, 870 flow [2021-11-20 07:10:41,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,946 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:41,946 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] [2021-11-20 07:10:41,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:10:41,946 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:41,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1796086946, now seen corresponding path program 1 times [2021-11-20 07:10:41,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:41,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795232098] [2021-11-20 07:10:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:41,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:42,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:42,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795232098] [2021-11-20 07:10:42,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795232098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:42,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:42,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:42,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548368308] [2021-11-20 07:10:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:42,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:42,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:42,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:42,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:42,175 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:42,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 192 transitions, 870 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:42,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:42,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:42,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:43,100 INFO L129 PetriNetUnfolder]: 307/1623 cut-off events. [2021-11-20 07:10:43,100 INFO L130 PetriNetUnfolder]: For 1109/1179 co-relation queries the response was YES. [2021-11-20 07:10:43,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 1623 events. 307/1623 cut-off events. For 1109/1179 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12415 event pairs, 211 based on Foata normal form. 1/1567 useless extension candidates. Maximal degree in co-relation 2952. Up to 676 conditions per place. [2021-11-20 07:10:43,118 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 7 changer transitions 52/298 dead transitions. [2021-11-20 07:10:43,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 298 transitions, 1513 flow [2021-11-20 07:10:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 07:10:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-20 07:10:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4110 transitions. [2021-11-20 07:10:43,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619577308120133 [2021-11-20 07:10:43,132 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4110 transitions. [2021-11-20 07:10:43,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4110 transitions. [2021-11-20 07:10:43,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:43,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4110 transitions. [2021-11-20 07:10:43,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.58064516129033) internal successors, (4110), 31 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:43,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:43,204 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:43,204 INFO L186 Difference]: Start difference. First operand has 191 places, 192 transitions, 870 flow. Second operand 31 states and 4110 transitions. [2021-11-20 07:10:43,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 298 transitions, 1513 flow [2021-11-20 07:10:43,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 298 transitions, 1499 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-11-20 07:10:43,222 INFO L242 Difference]: Finished difference. Result has 247 places, 198 transitions, 991 flow [2021-11-20 07:10:43,223 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=991, PETRI_PLACES=247, PETRI_TRANSITIONS=198} [2021-11-20 07:10:43,225 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 90 predicate places. [2021-11-20 07:10:43,225 INFO L470 AbstractCegarLoop]: Abstraction has has 247 places, 198 transitions, 991 flow [2021-11-20 07:10:43,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:43,226 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:43,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:43,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:10:43,227 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:43,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1337300728, now seen corresponding path program 2 times [2021-11-20 07:10:43,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:43,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299736477] [2021-11-20 07:10:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:43,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:43,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:43,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299736477] [2021-11-20 07:10:43,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299736477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:43,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:43,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:43,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358885887] [2021-11-20 07:10:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:43,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:43,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:43,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:43,438 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:43,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 198 transitions, 991 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:43,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:43,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:43,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:44,270 INFO L129 PetriNetUnfolder]: 321/1674 cut-off events. [2021-11-20 07:10:44,271 INFO L130 PetriNetUnfolder]: For 6457/6527 co-relation queries the response was YES. [2021-11-20 07:10:44,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 1674 events. 321/1674 cut-off events. For 6457/6527 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12862 event pairs, 220 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 5389. Up to 718 conditions per place. [2021-11-20 07:10:44,344 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 74 selfloop transitions, 12 changer transitions 39/274 dead transitions. [2021-11-20 07:10:44,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 274 transitions, 1864 flow [2021-11-20 07:10:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 07:10:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 07:10:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2021-11-20 07:10:44,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2021-11-20 07:10:44,357 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2021-11-20 07:10:44,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2021-11-20 07:10:44,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:44,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2021-11-20 07:10:44,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:44,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:44,388 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:44,388 INFO L186 Difference]: Start difference. First operand has 247 places, 198 transitions, 991 flow. Second operand 26 states and 3446 transitions. [2021-11-20 07:10:44,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 274 transitions, 1864 flow [2021-11-20 07:10:44,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 274 transitions, 1743 flow, removed 60 selfloop flow, removed 12 redundant places. [2021-11-20 07:10:44,433 INFO L242 Difference]: Finished difference. Result has 261 places, 208 transitions, 1147 flow [2021-11-20 07:10:44,433 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1147, PETRI_PLACES=261, PETRI_TRANSITIONS=208} [2021-11-20 07:10:44,434 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 104 predicate places. [2021-11-20 07:10:44,434 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 208 transitions, 1147 flow [2021-11-20 07:10:44,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:44,436 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:44,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:44,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:10:44,436 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash 672767696, now seen corresponding path program 3 times [2021-11-20 07:10:44,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:44,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136979756] [2021-11-20 07:10:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:44,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:44,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:44,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136979756] [2021-11-20 07:10:44,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136979756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:44,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:44,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:44,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148641133] [2021-11-20 07:10:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:44,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:44,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:44,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:44,620 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:44,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 208 transitions, 1147 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:44,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:44,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:44,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:45,478 INFO L129 PetriNetUnfolder]: 322/1696 cut-off events. [2021-11-20 07:10:45,479 INFO L130 PetriNetUnfolder]: For 10825/10897 co-relation queries the response was YES. [2021-11-20 07:10:45,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 1696 events. 322/1696 cut-off events. For 10825/10897 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13078 event pairs, 231 based on Foata normal form. 1/1637 useless extension candidates. Maximal degree in co-relation 6182. Up to 732 conditions per place. [2021-11-20 07:10:45,507 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 18 changer transitions 40/290 dead transitions. [2021-11-20 07:10:45,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 290 transitions, 2504 flow [2021-11-20 07:10:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 07:10:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-20 07:10:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3319 transitions. [2021-11-20 07:10:45,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629885057471264 [2021-11-20 07:10:45,518 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3319 transitions. [2021-11-20 07:10:45,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3319 transitions. [2021-11-20 07:10:45,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:45,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3319 transitions. [2021-11-20 07:10:45,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.76) internal successors, (3319), 25 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:45,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:45,599 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:45,599 INFO L186 Difference]: Start difference. First operand has 261 places, 208 transitions, 1147 flow. Second operand 25 states and 3319 transitions. [2021-11-20 07:10:45,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 290 transitions, 2504 flow [2021-11-20 07:10:45,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 290 transitions, 2291 flow, removed 100 selfloop flow, removed 12 redundant places. [2021-11-20 07:10:45,658 INFO L242 Difference]: Finished difference. Result has 277 places, 223 transitions, 1423 flow [2021-11-20 07:10:45,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1423, PETRI_PLACES=277, PETRI_TRANSITIONS=223} [2021-11-20 07:10:45,660 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 120 predicate places. [2021-11-20 07:10:45,661 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 223 transitions, 1423 flow [2021-11-20 07:10:45,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:45,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:45,662 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] [2021-11-20 07:10:45,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:10:45,662 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash -837973800, now seen corresponding path program 4 times [2021-11-20 07:10:45,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:45,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737931896] [2021-11-20 07:10:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:45,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:45,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737931896] [2021-11-20 07:10:45,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737931896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:45,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:45,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:45,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799130453] [2021-11-20 07:10:45,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:45,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:45,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:45,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:45,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:45,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 223 transitions, 1423 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:45,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:45,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:45,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:46,780 INFO L129 PetriNetUnfolder]: 319/1717 cut-off events. [2021-11-20 07:10:46,780 INFO L130 PetriNetUnfolder]: For 14786/14860 co-relation queries the response was YES. [2021-11-20 07:10:46,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6994 conditions, 1717 events. 319/1717 cut-off events. For 14786/14860 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13524 event pairs, 218 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 6822. Up to 686 conditions per place. [2021-11-20 07:10:46,815 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 17 changer transitions 50/333 dead transitions. [2021-11-20 07:10:46,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 333 transitions, 3170 flow [2021-11-20 07:10:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:10:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:10:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3976 transitions. [2021-11-20 07:10:46,825 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616858237547893 [2021-11-20 07:10:46,825 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3976 transitions. [2021-11-20 07:10:46,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3976 transitions. [2021-11-20 07:10:46,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:46,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3976 transitions. [2021-11-20 07:10:46,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.53333333333333) internal successors, (3976), 30 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:46,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:46,852 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:46,852 INFO L186 Difference]: Start difference. First operand has 277 places, 223 transitions, 1423 flow. Second operand 30 states and 3976 transitions. [2021-11-20 07:10:46,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 333 transitions, 3170 flow [2021-11-20 07:10:46,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 333 transitions, 2710 flow, removed 230 selfloop flow, removed 10 redundant places. [2021-11-20 07:10:46,941 INFO L242 Difference]: Finished difference. Result has 308 places, 226 transitions, 1451 flow [2021-11-20 07:10:46,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1451, PETRI_PLACES=308, PETRI_TRANSITIONS=226} [2021-11-20 07:10:46,942 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 151 predicate places. [2021-11-20 07:10:46,943 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 226 transitions, 1451 flow [2021-11-20 07:10:46,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:46,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:46,944 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] [2021-11-20 07:10:46,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:10:46,944 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:46,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1310554844, now seen corresponding path program 5 times [2021-11-20 07:10:46,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:46,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507028119] [2021-11-20 07:10:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:46,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:47,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:47,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507028119] [2021-11-20 07:10:47,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507028119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:47,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:47,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:47,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259061850] [2021-11-20 07:10:47,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:47,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:47,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:47,097 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:47,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 226 transitions, 1451 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:47,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:47,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:47,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:48,141 INFO L129 PetriNetUnfolder]: 334/1757 cut-off events. [2021-11-20 07:10:48,141 INFO L130 PetriNetUnfolder]: For 16816/16890 co-relation queries the response was YES. [2021-11-20 07:10:48,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7410 conditions, 1757 events. 334/1757 cut-off events. For 16816/16890 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13829 event pairs, 224 based on Foata normal form. 3/1697 useless extension candidates. Maximal degree in co-relation 7258. Up to 730 conditions per place. [2021-11-20 07:10:48,174 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 29 changer transitions 41/312 dead transitions. [2021-11-20 07:10:48,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 2843 flow [2021-11-20 07:10:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:10:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:10:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2021-11-20 07:10:48,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2021-11-20 07:10:48,180 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2021-11-20 07:10:48,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2021-11-20 07:10:48,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:48,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2021-11-20 07:10:48,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:48,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:48,200 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:48,200 INFO L186 Difference]: Start difference. First operand has 308 places, 226 transitions, 1451 flow. Second operand 28 states and 3705 transitions. [2021-11-20 07:10:48,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 2843 flow [2021-11-20 07:10:48,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 312 transitions, 2619 flow, removed 110 selfloop flow, removed 24 redundant places. [2021-11-20 07:10:48,296 INFO L242 Difference]: Finished difference. Result has 306 places, 240 transitions, 1660 flow [2021-11-20 07:10:48,297 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1660, PETRI_PLACES=306, PETRI_TRANSITIONS=240} [2021-11-20 07:10:48,298 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2021-11-20 07:10:48,298 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 240 transitions, 1660 flow [2021-11-20 07:10:48,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:48,299 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:48,299 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] [2021-11-20 07:10:48,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:10:48,300 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:48,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash 512813802, now seen corresponding path program 6 times [2021-11-20 07:10:48,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689455934] [2021-11-20 07:10:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:48,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:48,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:48,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689455934] [2021-11-20 07:10:48,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689455934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:48,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:48,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:48,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757377253] [2021-11-20 07:10:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:48,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:48,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:48,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:48,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 240 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:48,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:48,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:48,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:49,455 INFO L129 PetriNetUnfolder]: 353/1792 cut-off events. [2021-11-20 07:10:49,456 INFO L130 PetriNetUnfolder]: For 13430/13504 co-relation queries the response was YES. [2021-11-20 07:10:49,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7462 conditions, 1792 events. 353/1792 cut-off events. For 13430/13504 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14062 event pairs, 247 based on Foata normal form. 3/1729 useless extension candidates. Maximal degree in co-relation 7270. Up to 742 conditions per place. [2021-11-20 07:10:49,490 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 35 changer transitions 41/318 dead transitions. [2021-11-20 07:10:49,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 3045 flow [2021-11-20 07:10:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 07:10:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 07:10:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3452 transitions. [2021-11-20 07:10:49,498 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630415561450045 [2021-11-20 07:10:49,498 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3452 transitions. [2021-11-20 07:10:49,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3452 transitions. [2021-11-20 07:10:49,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:49,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3452 transitions. [2021-11-20 07:10:49,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.76923076923077) internal successors, (3452), 26 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:49,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:49,518 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:49,518 INFO L186 Difference]: Start difference. First operand has 306 places, 240 transitions, 1660 flow. Second operand 26 states and 3452 transitions. [2021-11-20 07:10:49,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 3045 flow [2021-11-20 07:10:49,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 318 transitions, 2821 flow, removed 103 selfloop flow, removed 18 redundant places. [2021-11-20 07:10:49,609 INFO L242 Difference]: Finished difference. Result has 316 places, 254 transitions, 1929 flow [2021-11-20 07:10:49,610 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1929, PETRI_PLACES=316, PETRI_TRANSITIONS=254} [2021-11-20 07:10:49,611 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2021-11-20 07:10:49,611 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 254 transitions, 1929 flow [2021-11-20 07:10:49,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:49,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:49,612 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] [2021-11-20 07:10:49,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:10:49,613 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:49,613 INFO L85 PathProgramCache]: Analyzing trace with hash -800040322, now seen corresponding path program 7 times [2021-11-20 07:10:49,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:49,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001881035] [2021-11-20 07:10:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:49,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:49,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:49,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001881035] [2021-11-20 07:10:49,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001881035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:49,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:49,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:49,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966728561] [2021-11-20 07:10:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:49,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:49,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:49,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:49,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 254 transitions, 1929 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:49,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:49,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:49,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:50,774 INFO L129 PetriNetUnfolder]: 346/1784 cut-off events. [2021-11-20 07:10:50,775 INFO L130 PetriNetUnfolder]: For 12014/12088 co-relation queries the response was YES. [2021-11-20 07:10:50,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7320 conditions, 1784 events. 346/1784 cut-off events. For 12014/12088 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 14068 event pairs, 230 based on Foata normal form. 3/1720 useless extension candidates. Maximal degree in co-relation 7129. Up to 752 conditions per place. [2021-11-20 07:10:50,813 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 39 changer transitions 37/329 dead transitions. [2021-11-20 07:10:50,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 329 transitions, 3436 flow [2021-11-20 07:10:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:10:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:10:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2021-11-20 07:10:50,818 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2021-11-20 07:10:50,818 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2021-11-20 07:10:50,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2021-11-20 07:10:50,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:50,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2021-11-20 07:10:50,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:50,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:50,832 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:50,832 INFO L186 Difference]: Start difference. First operand has 316 places, 254 transitions, 1929 flow. Second operand 22 states and 2923 transitions. [2021-11-20 07:10:50,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 329 transitions, 3436 flow [2021-11-20 07:10:50,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 329 transitions, 3237 flow, removed 79 selfloop flow, removed 13 redundant places. [2021-11-20 07:10:50,918 INFO L242 Difference]: Finished difference. Result has 324 places, 265 transitions, 2180 flow [2021-11-20 07:10:50,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2180, PETRI_PLACES=324, PETRI_TRANSITIONS=265} [2021-11-20 07:10:50,920 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2021-11-20 07:10:50,920 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 265 transitions, 2180 flow [2021-11-20 07:10:50,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:50,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:50,921 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] [2021-11-20 07:10:50,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:10:50,922 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:50,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1796734060, now seen corresponding path program 8 times [2021-11-20 07:10:50,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:50,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921587863] [2021-11-20 07:10:50,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:50,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:51,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:51,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921587863] [2021-11-20 07:10:51,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921587863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:51,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:51,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:51,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812409694] [2021-11-20 07:10:51,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:51,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:51,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:51,081 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:51,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 265 transitions, 2180 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:51,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:51,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:51,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:51,932 INFO L129 PetriNetUnfolder]: 342/1778 cut-off events. [2021-11-20 07:10:51,933 INFO L130 PetriNetUnfolder]: For 12178/12259 co-relation queries the response was YES. [2021-11-20 07:10:51,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7223 conditions, 1778 events. 342/1778 cut-off events. For 12178/12259 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13988 event pairs, 227 based on Foata normal form. 7/1720 useless extension candidates. Maximal degree in co-relation 7022. Up to 744 conditions per place. [2021-11-20 07:10:51,967 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 45 changer transitions 33/327 dead transitions. [2021-11-20 07:10:51,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 327 transitions, 3448 flow [2021-11-20 07:10:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:10:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:10:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2021-11-20 07:10:51,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2021-11-20 07:10:51,976 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2021-11-20 07:10:51,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2021-11-20 07:10:51,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:51,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2021-11-20 07:10:51,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 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) [2021-11-20 07:10:51,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:51,989 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:51,990 INFO L186 Difference]: Start difference. First operand has 324 places, 265 transitions, 2180 flow. Second operand 22 states and 2920 transitions. [2021-11-20 07:10:51,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 327 transitions, 3448 flow [2021-11-20 07:10:52,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 327 transitions, 3203 flow, removed 90 selfloop flow, removed 13 redundant places. [2021-11-20 07:10:52,088 INFO L242 Difference]: Finished difference. Result has 330 places, 272 transitions, 2298 flow [2021-11-20 07:10:52,089 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2298, PETRI_PLACES=330, PETRI_TRANSITIONS=272} [2021-11-20 07:10:52,089 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2021-11-20 07:10:52,090 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 272 transitions, 2298 flow [2021-11-20 07:10:52,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:52,090 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:52,091 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] [2021-11-20 07:10:52,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:10:52,091 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash 393814602, now seen corresponding path program 9 times [2021-11-20 07:10:52,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:52,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024617352] [2021-11-20 07:10:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:52,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:52,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:52,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024617352] [2021-11-20 07:10:52,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024617352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:52,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:52,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:52,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969454554] [2021-11-20 07:10:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:52,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:52,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:52,253 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:52,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 272 transitions, 2298 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:52,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:52,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:52,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:53,192 INFO L129 PetriNetUnfolder]: 340/1798 cut-off events. [2021-11-20 07:10:53,192 INFO L130 PetriNetUnfolder]: For 11951/12025 co-relation queries the response was YES. [2021-11-20 07:10:53,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7330 conditions, 1798 events. 340/1798 cut-off events. For 11951/12025 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14213 event pairs, 224 based on Foata normal form. 3/1738 useless extension candidates. Maximal degree in co-relation 7129. Up to 734 conditions per place. [2021-11-20 07:10:53,233 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 38 changer transitions 45/341 dead transitions. [2021-11-20 07:10:53,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 341 transitions, 3730 flow [2021-11-20 07:10:53,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 07:10:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-20 07:10:53,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2021-11-20 07:10:53,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2021-11-20 07:10:53,248 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2021-11-20 07:10:53,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2021-11-20 07:10:53,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:53,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2021-11-20 07:10:53,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:53,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:53,275 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:53,277 INFO L186 Difference]: Start difference. First operand has 330 places, 272 transitions, 2298 flow. Second operand 27 states and 3579 transitions. [2021-11-20 07:10:53,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 341 transitions, 3730 flow [2021-11-20 07:10:53,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 3598 flow, removed 57 selfloop flow, removed 6 redundant places. [2021-11-20 07:10:53,375 INFO L242 Difference]: Finished difference. Result has 358 places, 275 transitions, 2444 flow [2021-11-20 07:10:53,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2444, PETRI_PLACES=358, PETRI_TRANSITIONS=275} [2021-11-20 07:10:53,376 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2021-11-20 07:10:53,376 INFO L470 AbstractCegarLoop]: Abstraction has has 358 places, 275 transitions, 2444 flow [2021-11-20 07:10:53,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:53,377 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:53,377 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] [2021-11-20 07:10:53,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 07:10:53,378 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1145516922, now seen corresponding path program 10 times [2021-11-20 07:10:53,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:53,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618733996] [2021-11-20 07:10:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:53,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:53,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:53,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618733996] [2021-11-20 07:10:53,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618733996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:53,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:53,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:53,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036218943] [2021-11-20 07:10:53,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:53,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:53,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:53,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:53,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 275 transitions, 2444 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:53,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:53,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:53,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:54,268 INFO L129 PetriNetUnfolder]: 323/1728 cut-off events. [2021-11-20 07:10:54,268 INFO L130 PetriNetUnfolder]: For 11700/11774 co-relation queries the response was YES. [2021-11-20 07:10:54,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7041 conditions, 1728 events. 323/1728 cut-off events. For 11700/11774 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13578 event pairs, 224 based on Foata normal form. 3/1666 useless extension candidates. Maximal degree in co-relation 6880. Up to 736 conditions per place. [2021-11-20 07:10:54,305 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 29 changer transitions 38/313 dead transitions. [2021-11-20 07:10:54,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 313 transitions, 3289 flow [2021-11-20 07:10:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:10:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 07:10:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2397 transitions. [2021-11-20 07:10:54,310 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653256704980843 [2021-11-20 07:10:54,310 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2397 transitions. [2021-11-20 07:10:54,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2397 transitions. [2021-11-20 07:10:54,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:54,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2397 transitions. [2021-11-20 07:10:54,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.16666666666666) internal successors, (2397), 18 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:54,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:54,321 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:54,321 INFO L186 Difference]: Start difference. First operand has 358 places, 275 transitions, 2444 flow. Second operand 18 states and 2397 transitions. [2021-11-20 07:10:54,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 313 transitions, 3289 flow [2021-11-20 07:10:54,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3101 flow, removed 65 selfloop flow, removed 21 redundant places. [2021-11-20 07:10:54,418 INFO L242 Difference]: Finished difference. Result has 342 places, 255 transitions, 2035 flow [2021-11-20 07:10:54,418 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2035, PETRI_PLACES=342, PETRI_TRANSITIONS=255} [2021-11-20 07:10:54,419 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2021-11-20 07:10:54,419 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 255 transitions, 2035 flow [2021-11-20 07:10:54,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:54,420 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:54,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:54,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 07:10:54,421 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1063782838, now seen corresponding path program 11 times [2021-11-20 07:10:54,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:54,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156597855] [2021-11-20 07:10:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:54,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:54,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:54,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156597855] [2021-11-20 07:10:54,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156597855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:54,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:54,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:54,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198777611] [2021-11-20 07:10:54,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:54,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:54,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:54,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:54,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:54,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 255 transitions, 2035 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:54,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:54,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:54,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:55,343 INFO L129 PetriNetUnfolder]: 327/1737 cut-off events. [2021-11-20 07:10:55,343 INFO L130 PetriNetUnfolder]: For 11021/11095 co-relation queries the response was YES. [2021-11-20 07:10:55,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6922 conditions, 1737 events. 327/1737 cut-off events. For 11021/11095 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13616 event pairs, 230 based on Foata normal form. 2/1674 useless extension candidates. Maximal degree in co-relation 6822. Up to 734 conditions per place. [2021-11-20 07:10:55,373 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 36 changer transitions 30/307 dead transitions. [2021-11-20 07:10:55,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 307 transitions, 3109 flow [2021-11-20 07:10:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:10:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:10:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2021-11-20 07:10:55,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2021-11-20 07:10:55,380 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2021-11-20 07:10:55,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2021-11-20 07:10:55,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:55,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2021-11-20 07:10:55,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:55,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:55,392 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:55,392 INFO L186 Difference]: Start difference. First operand has 342 places, 255 transitions, 2035 flow. Second operand 20 states and 2661 transitions. [2021-11-20 07:10:55,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 307 transitions, 3109 flow [2021-11-20 07:10:55,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 307 transitions, 2850 flow, removed 35 selfloop flow, removed 22 redundant places. [2021-11-20 07:10:55,473 INFO L242 Difference]: Finished difference. Result has 324 places, 264 transitions, 2149 flow [2021-11-20 07:10:55,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2149, PETRI_PLACES=324, PETRI_TRANSITIONS=264} [2021-11-20 07:10:55,474 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2021-11-20 07:10:55,474 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 264 transitions, 2149 flow [2021-11-20 07:10:55,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:55,475 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:55,475 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] [2021-11-20 07:10:55,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 07:10:55,475 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1700248028, now seen corresponding path program 12 times [2021-11-20 07:10:55,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:55,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774980507] [2021-11-20 07:10:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:55,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:55,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:55,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774980507] [2021-11-20 07:10:55,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774980507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:55,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:55,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:55,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730142314] [2021-11-20 07:10:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:55,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:55,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:55,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:55,637 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:55,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 264 transitions, 2149 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:55,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:55,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:55,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:56,479 INFO L129 PetriNetUnfolder]: 323/1729 cut-off events. [2021-11-20 07:10:56,479 INFO L130 PetriNetUnfolder]: For 9796/9870 co-relation queries the response was YES. [2021-11-20 07:10:56,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 1729 events. 323/1729 cut-off events. For 9796/9870 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13592 event pairs, 227 based on Foata normal form. 3/1667 useless extension candidates. Maximal degree in co-relation 6647. Up to 736 conditions per place. [2021-11-20 07:10:56,527 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 37 changer transitions 31/310 dead transitions. [2021-11-20 07:10:56,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 310 transitions, 3093 flow [2021-11-20 07:10:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:10:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:10:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2021-11-20 07:10:56,539 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2021-11-20 07:10:56,539 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2021-11-20 07:10:56,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2021-11-20 07:10:56,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:56,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2021-11-20 07:10:56,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:56,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:10:56,555 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:10:56,556 INFO L186 Difference]: Start difference. First operand has 324 places, 264 transitions, 2149 flow. Second operand 19 states and 2532 transitions. [2021-11-20 07:10:56,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 310 transitions, 3093 flow [2021-11-20 07:10:56,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 310 transitions, 2966 flow, removed 43 selfloop flow, removed 7 redundant places. [2021-11-20 07:10:56,669 INFO L242 Difference]: Finished difference. Result has 334 places, 267 transitions, 2231 flow [2021-11-20 07:10:56,670 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2231, PETRI_PLACES=334, PETRI_TRANSITIONS=267} [2021-11-20 07:10:56,671 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2021-11-20 07:10:56,671 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 267 transitions, 2231 flow [2021-11-20 07:10:56,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:56,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:56,672 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] [2021-11-20 07:10:56,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 07:10:56,672 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:56,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:56,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1505151026, now seen corresponding path program 13 times [2021-11-20 07:10:56,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:56,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453026421] [2021-11-20 07:10:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:56,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:56,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:56,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453026421] [2021-11-20 07:10:56,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453026421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:56,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:56,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:56,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525620284] [2021-11-20 07:10:56,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:56,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:56,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:56,840 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:56,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 267 transitions, 2231 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:56,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:56,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:56,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:57,662 INFO L129 PetriNetUnfolder]: 322/1734 cut-off events. [2021-11-20 07:10:57,662 INFO L130 PetriNetUnfolder]: For 9810/9884 co-relation queries the response was YES. [2021-11-20 07:10:57,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6667 conditions, 1734 events. 322/1734 cut-off events. For 9810/9884 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13673 event pairs, 229 based on Foata normal form. 2/1671 useless extension candidates. Maximal degree in co-relation 6568. Up to 734 conditions per place. [2021-11-20 07:10:57,689 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 27 changer transitions 41/310 dead transitions. [2021-11-20 07:10:57,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 310 transitions, 3066 flow [2021-11-20 07:10:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:10:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 07:10:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2790 transitions. [2021-11-20 07:10:57,695 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635467980295566 [2021-11-20 07:10:57,695 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2790 transitions. [2021-11-20 07:10:57,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2790 transitions. [2021-11-20 07:10:57,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:57,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2790 transitions. [2021-11-20 07:10:57,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.85714285714286) internal successors, (2790), 21 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:57,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:57,707 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:57,707 INFO L186 Difference]: Start difference. First operand has 334 places, 267 transitions, 2231 flow. Second operand 21 states and 2790 transitions. [2021-11-20 07:10:57,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 310 transitions, 3066 flow [2021-11-20 07:10:57,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 310 transitions, 2939 flow, removed 26 selfloop flow, removed 8 redundant places. [2021-11-20 07:10:57,810 INFO L242 Difference]: Finished difference. Result has 346 places, 258 transitions, 2031 flow [2021-11-20 07:10:57,810 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2031, PETRI_PLACES=346, PETRI_TRANSITIONS=258} [2021-11-20 07:10:57,811 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2021-11-20 07:10:57,811 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 258 transitions, 2031 flow [2021-11-20 07:10:57,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:57,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:57,812 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] [2021-11-20 07:10:57,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 07:10:57,813 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:57,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash 968465978, now seen corresponding path program 14 times [2021-11-20 07:10:57,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:57,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423714215] [2021-11-20 07:10:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:57,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:57,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:57,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423714215] [2021-11-20 07:10:57,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423714215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:57,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:57,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:57,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912388354] [2021-11-20 07:10:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:57,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:57,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:57,952 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:57,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 258 transitions, 2031 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:57,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:57,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:57,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:58,760 INFO L129 PetriNetUnfolder]: 308/1676 cut-off events. [2021-11-20 07:10:58,760 INFO L130 PetriNetUnfolder]: For 9445/9519 co-relation queries the response was YES. [2021-11-20 07:10:58,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 1676 events. 308/1676 cut-off events. For 9445/9519 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13062 event pairs, 225 based on Foata normal form. 3/1616 useless extension candidates. Maximal degree in co-relation 6287. Up to 724 conditions per place. [2021-11-20 07:10:58,786 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 14 changer transitions 42/288 dead transitions. [2021-11-20 07:10:58,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 288 transitions, 2632 flow [2021-11-20 07:10:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:10:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:10:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2910 transitions. [2021-11-20 07:10:58,800 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601880877742947 [2021-11-20 07:10:58,801 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2910 transitions. [2021-11-20 07:10:58,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2910 transitions. [2021-11-20 07:10:58,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:58,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2910 transitions. [2021-11-20 07:10:58,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.27272727272728) internal successors, (2910), 22 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:58,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:58,813 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:58,813 INFO L186 Difference]: Start difference. First operand has 346 places, 258 transitions, 2031 flow. Second operand 22 states and 2910 transitions. [2021-11-20 07:10:58,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 288 transitions, 2632 flow [2021-11-20 07:10:58,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 288 transitions, 2447 flow, removed 38 selfloop flow, removed 26 redundant places. [2021-11-20 07:10:58,905 INFO L242 Difference]: Finished difference. Result has 329 places, 235 transitions, 1594 flow [2021-11-20 07:10:58,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1594, PETRI_PLACES=329, PETRI_TRANSITIONS=235} [2021-11-20 07:10:58,906 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2021-11-20 07:10:58,906 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 235 transitions, 1594 flow [2021-11-20 07:10:58,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:58,907 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:58,907 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] [2021-11-20 07:10:58,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 07:10:58,907 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1160490034, now seen corresponding path program 15 times [2021-11-20 07:10:58,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978842883] [2021-11-20 07:10:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:58,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:59,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:59,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978842883] [2021-11-20 07:10:59,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978842883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:59,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:59,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:10:59,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218599912] [2021-11-20 07:10:59,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:59,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:59,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:59,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:59,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:59,060 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:10:59,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 235 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:59,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:59,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:10:59,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:59,837 INFO L129 PetriNetUnfolder]: 318/1702 cut-off events. [2021-11-20 07:10:59,837 INFO L130 PetriNetUnfolder]: For 9416/9491 co-relation queries the response was YES. [2021-11-20 07:10:59,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6418 conditions, 1702 events. 318/1702 cut-off events. For 9416/9491 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13275 event pairs, 236 based on Foata normal form. 1/1637 useless extension candidates. Maximal degree in co-relation 6324. Up to 722 conditions per place. [2021-11-20 07:10:59,853 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 26 changer transitions 35/297 dead transitions. [2021-11-20 07:10:59,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 297 transitions, 2701 flow [2021-11-20 07:10:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:10:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 07:10:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3186 transitions. [2021-11-20 07:10:59,858 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629310344827587 [2021-11-20 07:10:59,858 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3186 transitions. [2021-11-20 07:10:59,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3186 transitions. [2021-11-20 07:10:59,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:59,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3186 transitions. [2021-11-20 07:10:59,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.75) internal successors, (3186), 24 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:59,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:59,869 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:59,869 INFO L186 Difference]: Start difference. First operand has 329 places, 235 transitions, 1594 flow. Second operand 24 states and 3186 transitions. [2021-11-20 07:10:59,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 297 transitions, 2701 flow [2021-11-20 07:10:59,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 297 transitions, 2454 flow, removed 43 selfloop flow, removed 23 redundant places. [2021-11-20 07:10:59,941 INFO L242 Difference]: Finished difference. Result has 311 places, 246 transitions, 1738 flow [2021-11-20 07:10:59,941 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1738, PETRI_PLACES=311, PETRI_TRANSITIONS=246} [2021-11-20 07:10:59,942 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2021-11-20 07:10:59,942 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 246 transitions, 1738 flow [2021-11-20 07:10:59,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:59,942 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:59,943 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] [2021-11-20 07:10:59,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 07:10:59,943 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:10:59,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:59,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1197105136, now seen corresponding path program 16 times [2021-11-20 07:10:59,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:59,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487659897] [2021-11-20 07:10:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:59,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:00,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:00,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487659897] [2021-11-20 07:11:00,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487659897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:00,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:00,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:00,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033644868] [2021-11-20 07:11:00,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:00,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:00,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:00,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:00,093 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:00,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 246 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:00,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:00,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:00,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:00,831 INFO L129 PetriNetUnfolder]: 314/1705 cut-off events. [2021-11-20 07:11:00,831 INFO L130 PetriNetUnfolder]: For 8770/8844 co-relation queries the response was YES. [2021-11-20 07:11:00,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6357 conditions, 1705 events. 314/1705 cut-off events. For 8770/8844 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13349 event pairs, 232 based on Foata normal form. 3/1642 useless extension candidates. Maximal degree in co-relation 6264. Up to 724 conditions per place. [2021-11-20 07:11:00,863 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 28 changer transitions 36/299 dead transitions. [2021-11-20 07:11:00,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 299 transitions, 2714 flow [2021-11-20 07:11:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 07:11:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-20 07:11:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3055 transitions. [2021-11-20 07:11:00,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763368315842079 [2021-11-20 07:11:00,869 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3055 transitions. [2021-11-20 07:11:00,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3055 transitions. [2021-11-20 07:11:00,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:00,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3055 transitions. [2021-11-20 07:11:00,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.82608695652175) internal successors, (3055), 23 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:00,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:00,884 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:00,884 INFO L186 Difference]: Start difference. First operand has 311 places, 246 transitions, 1738 flow. Second operand 23 states and 3055 transitions. [2021-11-20 07:11:00,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 299 transitions, 2714 flow [2021-11-20 07:11:00,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 299 transitions, 2611 flow, removed 46 selfloop flow, removed 12 redundant places. [2021-11-20 07:11:00,956 INFO L242 Difference]: Finished difference. Result has 322 places, 250 transitions, 1880 flow [2021-11-20 07:11:00,956 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1880, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2021-11-20 07:11:00,957 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2021-11-20 07:11:00,957 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 1880 flow [2021-11-20 07:11:00,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:00,958 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:00,959 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] [2021-11-20 07:11:00,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 07:11:00,959 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1049709578, now seen corresponding path program 17 times [2021-11-20 07:11:00,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:00,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078533484] [2021-11-20 07:11:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:00,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:01,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:01,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078533484] [2021-11-20 07:11:01,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078533484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:01,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:01,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:01,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244665687] [2021-11-20 07:11:01,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:01,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:01,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:01,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:01,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:01,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:01,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:01,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:01,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:01,768 INFO L129 PetriNetUnfolder]: 310/1674 cut-off events. [2021-11-20 07:11:01,769 INFO L130 PetriNetUnfolder]: For 9066/9141 co-relation queries the response was YES. [2021-11-20 07:11:01,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 1674 events. 310/1674 cut-off events. For 9066/9141 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12984 event pairs, 232 based on Foata normal form. 1/1611 useless extension candidates. Maximal degree in co-relation 6194. Up to 722 conditions per place. [2021-11-20 07:11:01,793 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 30 changer transitions 30/294 dead transitions. [2021-11-20 07:11:01,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 294 transitions, 2745 flow [2021-11-20 07:11:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2021-11-20 07:11:01,796 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2021-11-20 07:11:01,796 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2021-11-20 07:11:01,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2021-11-20 07:11:01,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:01,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2021-11-20 07:11:01,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:01,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:01,806 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:01,806 INFO L186 Difference]: Start difference. First operand has 322 places, 250 transitions, 1880 flow. Second operand 20 states and 2664 transitions. [2021-11-20 07:11:01,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 294 transitions, 2745 flow [2021-11-20 07:11:01,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 294 transitions, 2597 flow, removed 52 selfloop flow, removed 14 redundant places. [2021-11-20 07:11:01,889 INFO L242 Difference]: Finished difference. Result has 322 places, 257 transitions, 1994 flow [2021-11-20 07:11:01,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1994, PETRI_PLACES=322, PETRI_TRANSITIONS=257} [2021-11-20 07:11:01,891 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2021-11-20 07:11:01,891 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 257 transitions, 1994 flow [2021-11-20 07:11:01,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:01,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:01,892 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] [2021-11-20 07:11:01,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 07:11:01,892 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash -547353468, now seen corresponding path program 18 times [2021-11-20 07:11:01,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:01,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057703853] [2021-11-20 07:11:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:01,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:02,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:02,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057703853] [2021-11-20 07:11:02,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057703853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:02,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:02,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:02,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452413716] [2021-11-20 07:11:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:02,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:02,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:02,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:02,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 257 transitions, 1994 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:02,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:02,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:02,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:02,767 INFO L129 PetriNetUnfolder]: 313/1694 cut-off events. [2021-11-20 07:11:02,767 INFO L130 PetriNetUnfolder]: For 9113/9188 co-relation queries the response was YES. [2021-11-20 07:11:02,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6402 conditions, 1694 events. 313/1694 cut-off events. For 9113/9188 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13255 event pairs, 234 based on Foata normal form. 1/1629 useless extension candidates. Maximal degree in co-relation 6307. Up to 722 conditions per place. [2021-11-20 07:11:02,797 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 38 changer transitions 30/302 dead transitions. [2021-11-20 07:11:02,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 302 transitions, 2908 flow [2021-11-20 07:11:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:11:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:11:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2533 transitions. [2021-11-20 07:11:02,801 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661826981246219 [2021-11-20 07:11:02,802 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2533 transitions. [2021-11-20 07:11:02,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2533 transitions. [2021-11-20 07:11:02,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:02,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2533 transitions. [2021-11-20 07:11:02,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.31578947368422) internal successors, (2533), 19 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:02,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:02,811 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:02,811 INFO L186 Difference]: Start difference. First operand has 322 places, 257 transitions, 1994 flow. Second operand 19 states and 2533 transitions. [2021-11-20 07:11:02,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 302 transitions, 2908 flow [2021-11-20 07:11:02,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 302 transitions, 2789 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-11-20 07:11:02,894 INFO L242 Difference]: Finished difference. Result has 333 places, 265 transitions, 2172 flow [2021-11-20 07:11:02,894 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2172, PETRI_PLACES=333, PETRI_TRANSITIONS=265} [2021-11-20 07:11:02,895 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2021-11-20 07:11:02,895 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 265 transitions, 2172 flow [2021-11-20 07:11:02,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:02,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:02,896 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] [2021-11-20 07:11:02,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 07:11:02,898 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:02,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:02,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1230905040, now seen corresponding path program 19 times [2021-11-20 07:11:02,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:02,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873227532] [2021-11-20 07:11:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:02,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:03,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:03,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873227532] [2021-11-20 07:11:03,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873227532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:03,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:03,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:03,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340178513] [2021-11-20 07:11:03,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:03,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:03,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:03,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:03,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:03,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 265 transitions, 2172 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:03,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:03,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:03,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:03,739 INFO L129 PetriNetUnfolder]: 309/1706 cut-off events. [2021-11-20 07:11:03,739 INFO L130 PetriNetUnfolder]: For 9158/9232 co-relation queries the response was YES. [2021-11-20 07:11:03,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 1706 events. 309/1706 cut-off events. For 9158/9232 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13396 event pairs, 227 based on Foata normal form. 3/1645 useless extension candidates. Maximal degree in co-relation 6371. Up to 724 conditions per place. [2021-11-20 07:11:03,764 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 34 changer transitions 31/306 dead transitions. [2021-11-20 07:11:03,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 306 transitions, 3048 flow [2021-11-20 07:11:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2021-11-20 07:11:03,768 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2021-11-20 07:11:03,768 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2021-11-20 07:11:03,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2021-11-20 07:11:03,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:03,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2021-11-20 07:11:03,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:03,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:03,777 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:03,777 INFO L186 Difference]: Start difference. First operand has 333 places, 265 transitions, 2172 flow. Second operand 20 states and 2664 transitions. [2021-11-20 07:11:03,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 306 transitions, 3048 flow [2021-11-20 07:11:03,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 306 transitions, 2928 flow, removed 23 selfloop flow, removed 9 redundant places. [2021-11-20 07:11:03,856 INFO L242 Difference]: Finished difference. Result has 343 places, 269 transitions, 2265 flow [2021-11-20 07:11:03,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2265, PETRI_PLACES=343, PETRI_TRANSITIONS=269} [2021-11-20 07:11:03,857 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2021-11-20 07:11:03,857 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 269 transitions, 2265 flow [2021-11-20 07:11:03,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:03,858 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:03,858 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] [2021-11-20 07:11:03,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 07:11:03,858 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1420054916, now seen corresponding path program 20 times [2021-11-20 07:11:03,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:03,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129404817] [2021-11-20 07:11:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:03,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:03,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:03,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129404817] [2021-11-20 07:11:03,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129404817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:03,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:03,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:03,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400321858] [2021-11-20 07:11:03,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:03,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:03,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:03,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:03,982 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:03,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 269 transitions, 2265 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:03,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:03,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:03,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:04,603 INFO L129 PetriNetUnfolder]: 304/1696 cut-off events. [2021-11-20 07:11:04,603 INFO L130 PetriNetUnfolder]: For 9059/9133 co-relation queries the response was YES. [2021-11-20 07:11:04,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6368 conditions, 1696 events. 304/1696 cut-off events. For 9059/9133 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13342 event pairs, 228 based on Foata normal form. 3/1634 useless extension candidates. Maximal degree in co-relation 6263. Up to 724 conditions per place. [2021-11-20 07:11:04,622 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 19 changer transitions 44/300 dead transitions. [2021-11-20 07:11:04,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 300 transitions, 2909 flow [2021-11-20 07:11:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-11-20 07:11:04,625 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-11-20 07:11:04,625 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-11-20 07:11:04,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-11-20 07:11:04,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:04,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-11-20 07:11:04,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:04,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:04,634 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:04,634 INFO L186 Difference]: Start difference. First operand has 343 places, 269 transitions, 2265 flow. Second operand 20 states and 2663 transitions. [2021-11-20 07:11:04,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 300 transitions, 2909 flow [2021-11-20 07:11:04,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 300 transitions, 2812 flow, removed 27 selfloop flow, removed 7 redundant places. [2021-11-20 07:11:04,709 INFO L242 Difference]: Finished difference. Result has 352 places, 252 transitions, 1935 flow [2021-11-20 07:11:04,709 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1935, PETRI_PLACES=352, PETRI_TRANSITIONS=252} [2021-11-20 07:11:04,710 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 195 predicate places. [2021-11-20 07:11:04,710 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 252 transitions, 1935 flow [2021-11-20 07:11:04,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:04,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:04,711 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] [2021-11-20 07:11:04,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 07:11:04,711 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:04,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1508200520, now seen corresponding path program 21 times [2021-11-20 07:11:04,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:04,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033863556] [2021-11-20 07:11:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:04,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:04,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:04,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033863556] [2021-11-20 07:11:04,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033863556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:04,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:04,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:04,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700175520] [2021-11-20 07:11:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:04,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:04,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:04,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:04,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 252 transitions, 1935 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:04,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:04,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:04,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:05,544 INFO L129 PetriNetUnfolder]: 300/1664 cut-off events. [2021-11-20 07:11:05,544 INFO L130 PetriNetUnfolder]: For 8940/9014 co-relation queries the response was YES. [2021-11-20 07:11:05,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 1664 events. 300/1664 cut-off events. For 8940/9014 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12942 event pairs, 227 based on Foata normal form. 3/1603 useless extension candidates. Maximal degree in co-relation 6081. Up to 724 conditions per place. [2021-11-20 07:11:05,566 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 19 changer transitions 41/288 dead transitions. [2021-11-20 07:11:05,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 288 transitions, 2660 flow [2021-11-20 07:11:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:11:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 07:11:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2790 transitions. [2021-11-20 07:11:05,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635467980295566 [2021-11-20 07:11:05,570 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2790 transitions. [2021-11-20 07:11:05,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2790 transitions. [2021-11-20 07:11:05,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:05,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2790 transitions. [2021-11-20 07:11:05,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.85714285714286) internal successors, (2790), 21 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:05,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:05,579 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:05,580 INFO L186 Difference]: Start difference. First operand has 352 places, 252 transitions, 1935 flow. Second operand 21 states and 2790 transitions. [2021-11-20 07:11:05,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 288 transitions, 2660 flow [2021-11-20 07:11:05,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 288 transitions, 2451 flow, removed 36 selfloop flow, removed 26 redundant places. [2021-11-20 07:11:05,663 INFO L242 Difference]: Finished difference. Result has 331 places, 243 transitions, 1703 flow [2021-11-20 07:11:05,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1703, PETRI_PLACES=331, PETRI_TRANSITIONS=243} [2021-11-20 07:11:05,664 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2021-11-20 07:11:05,664 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 243 transitions, 1703 flow [2021-11-20 07:11:05,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:05,665 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:05,665 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] [2021-11-20 07:11:05,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 07:11:05,666 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash -758866520, now seen corresponding path program 22 times [2021-11-20 07:11:05,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:05,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56772258] [2021-11-20 07:11:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:05,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:05,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:05,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56772258] [2021-11-20 07:11:05,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56772258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:05,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:05,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:05,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676330553] [2021-11-20 07:11:05,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:05,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:05,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:05,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:05,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:05,831 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:05,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 243 transitions, 1703 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:05,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:05,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:05,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:06,408 INFO L129 PetriNetUnfolder]: 287/1618 cut-off events. [2021-11-20 07:11:06,408 INFO L130 PetriNetUnfolder]: For 8020/8094 co-relation queries the response was YES. [2021-11-20 07:11:06,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5778 conditions, 1618 events. 287/1618 cut-off events. For 8020/8094 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12506 event pairs, 225 based on Foata normal form. 3/1558 useless extension candidates. Maximal degree in co-relation 5678. Up to 711 conditions per place. [2021-11-20 07:11:06,426 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 4 changer transitions 43/263 dead transitions. [2021-11-20 07:11:06,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 263 transitions, 2103 flow [2021-11-20 07:11:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:11:06,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:11:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2906 transitions. [2021-11-20 07:11:06,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591431556948798 [2021-11-20 07:11:06,428 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2906 transitions. [2021-11-20 07:11:06,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2906 transitions. [2021-11-20 07:11:06,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:06,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2906 transitions. [2021-11-20 07:11:06,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.0909090909091) internal successors, (2906), 22 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:06,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:06,433 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:06,433 INFO L186 Difference]: Start difference. First operand has 331 places, 243 transitions, 1703 flow. Second operand 22 states and 2906 transitions. [2021-11-20 07:11:06,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 263 transitions, 2103 flow [2021-11-20 07:11:06,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 263 transitions, 1981 flow, removed 26 selfloop flow, removed 24 redundant places. [2021-11-20 07:11:06,476 INFO L242 Difference]: Finished difference. Result has 314 places, 216 transitions, 1261 flow [2021-11-20 07:11:06,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1261, PETRI_PLACES=314, PETRI_TRANSITIONS=216} [2021-11-20 07:11:06,477 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 157 predicate places. [2021-11-20 07:11:06,478 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 216 transitions, 1261 flow [2021-11-20 07:11:06,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:06,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:06,478 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] [2021-11-20 07:11:06,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 07:11:06,479 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 326645504, now seen corresponding path program 23 times [2021-11-20 07:11:06,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:06,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507008804] [2021-11-20 07:11:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:06,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:06,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:06,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507008804] [2021-11-20 07:11:06,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507008804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:06,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:06,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:06,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17582302] [2021-11-20 07:11:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:06,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:06,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:06,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:06,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 216 transitions, 1261 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:06,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:06,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:06,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:07,327 INFO L129 PetriNetUnfolder]: 304/1667 cut-off events. [2021-11-20 07:11:07,328 INFO L130 PetriNetUnfolder]: For 8040/8112 co-relation queries the response was YES. [2021-11-20 07:11:07,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 1667 events. 304/1667 cut-off events. For 8040/8112 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12924 event pairs, 225 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 5841. Up to 719 conditions per place. [2021-11-20 07:11:07,341 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 81 selfloop transitions, 23 changer transitions 42/295 dead transitions. [2021-11-20 07:11:07,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 295 transitions, 2433 flow [2021-11-20 07:11:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:11:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:11:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2021-11-20 07:11:07,346 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2021-11-20 07:11:07,347 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2021-11-20 07:11:07,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2021-11-20 07:11:07,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:07,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2021-11-20 07:11:07,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:07,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:07,356 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:07,356 INFO L186 Difference]: Start difference. First operand has 314 places, 216 transitions, 1261 flow. Second operand 28 states and 3705 transitions. [2021-11-20 07:11:07,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 295 transitions, 2433 flow [2021-11-20 07:11:07,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 295 transitions, 2284 flow, removed 40 selfloop flow, removed 21 redundant places. [2021-11-20 07:11:07,405 INFO L242 Difference]: Finished difference. Result has 302 places, 229 transitions, 1462 flow [2021-11-20 07:11:07,405 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1462, PETRI_PLACES=302, PETRI_TRANSITIONS=229} [2021-11-20 07:11:07,406 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 145 predicate places. [2021-11-20 07:11:07,406 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 229 transitions, 1462 flow [2021-11-20 07:11:07,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:07,407 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:07,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:07,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 07:11:07,407 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1891662696, now seen corresponding path program 24 times [2021-11-20 07:11:07,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:07,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356445694] [2021-11-20 07:11:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:07,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:07,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:07,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356445694] [2021-11-20 07:11:07,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356445694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:07,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:07,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:07,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088414519] [2021-11-20 07:11:07,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:07,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:07,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:07,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:07,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:07,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:07,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 229 transitions, 1462 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:07,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:07,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:07,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:08,225 INFO L129 PetriNetUnfolder]: 301/1676 cut-off events. [2021-11-20 07:11:08,226 INFO L130 PetriNetUnfolder]: For 8207/8279 co-relation queries the response was YES. [2021-11-20 07:11:08,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6010 conditions, 1676 events. 301/1676 cut-off events. For 8207/8279 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13052 event pairs, 228 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 5917. Up to 717 conditions per place. [2021-11-20 07:11:08,251 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 25 changer transitions 42/293 dead transitions. [2021-11-20 07:11:08,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 293 transitions, 2560 flow [2021-11-20 07:11:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 07:11:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-20 07:11:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3572 transitions. [2021-11-20 07:11:08,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603235419327373 [2021-11-20 07:11:08,254 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3572 transitions. [2021-11-20 07:11:08,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3572 transitions. [2021-11-20 07:11:08,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:08,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3572 transitions. [2021-11-20 07:11:08,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.2962962962963) internal successors, (3572), 27 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:08,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:08,261 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:08,261 INFO L186 Difference]: Start difference. First operand has 302 places, 229 transitions, 1462 flow. Second operand 27 states and 3572 transitions. [2021-11-20 07:11:08,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 293 transitions, 2560 flow [2021-11-20 07:11:08,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 293 transitions, 2398 flow, removed 73 selfloop flow, removed 17 redundant places. [2021-11-20 07:11:08,323 INFO L242 Difference]: Finished difference. Result has 313 places, 233 transitions, 1608 flow [2021-11-20 07:11:08,323 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1608, PETRI_PLACES=313, PETRI_TRANSITIONS=233} [2021-11-20 07:11:08,325 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 156 predicate places. [2021-11-20 07:11:08,325 INFO L470 AbstractCegarLoop]: Abstraction has has 313 places, 233 transitions, 1608 flow [2021-11-20 07:11:08,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:08,325 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:08,326 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] [2021-11-20 07:11:08,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 07:11:08,326 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:08,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash 368389544, now seen corresponding path program 25 times [2021-11-20 07:11:08,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:08,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349659702] [2021-11-20 07:11:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:08,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:08,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:08,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349659702] [2021-11-20 07:11:08,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349659702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:08,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:08,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:08,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494196727] [2021-11-20 07:11:08,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:08,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:08,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:08,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:08,475 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:08,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 233 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:08,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:08,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:08,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:09,081 INFO L129 PetriNetUnfolder]: 296/1637 cut-off events. [2021-11-20 07:11:09,081 INFO L130 PetriNetUnfolder]: For 8838/8910 co-relation queries the response was YES. [2021-11-20 07:11:09,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 1637 events. 296/1637 cut-off events. For 8838/8910 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12631 event pairs, 223 based on Foata normal form. 1/1576 useless extension candidates. Maximal degree in co-relation 5938. Up to 719 conditions per place. [2021-11-20 07:11:09,098 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 27 changer transitions 37/292 dead transitions. [2021-11-20 07:11:09,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 2659 flow [2021-11-20 07:11:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:11:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 07:11:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2021-11-20 07:11:09,103 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2021-11-20 07:11:09,103 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2021-11-20 07:11:09,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2021-11-20 07:11:09,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:09,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2021-11-20 07:11:09,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:09,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:09,112 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:09,112 INFO L186 Difference]: Start difference. First operand has 313 places, 233 transitions, 1608 flow. Second operand 24 states and 3183 transitions. [2021-11-20 07:11:09,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 2659 flow [2021-11-20 07:11:09,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 2435 flow, removed 93 selfloop flow, removed 20 redundant places. [2021-11-20 07:11:09,176 INFO L242 Difference]: Finished difference. Result has 312 places, 240 transitions, 1718 flow [2021-11-20 07:11:09,177 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1718, PETRI_PLACES=312, PETRI_TRANSITIONS=240} [2021-11-20 07:11:09,177 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 155 predicate places. [2021-11-20 07:11:09,178 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 240 transitions, 1718 flow [2021-11-20 07:11:09,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:09,178 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:09,178 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] [2021-11-20 07:11:09,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 07:11:09,179 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash -647839046, now seen corresponding path program 26 times [2021-11-20 07:11:09,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:09,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058666751] [2021-11-20 07:11:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:09,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:09,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058666751] [2021-11-20 07:11:09,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058666751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:09,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:09,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:09,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881787498] [2021-11-20 07:11:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:09,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:09,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:09,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:09,315 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:09,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 240 transitions, 1718 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:09,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:09,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:09,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:09,926 INFO L129 PetriNetUnfolder]: 305/1657 cut-off events. [2021-11-20 07:11:09,926 INFO L130 PetriNetUnfolder]: For 8178/8250 co-relation queries the response was YES. [2021-11-20 07:11:09,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6132 conditions, 1657 events. 305/1657 cut-off events. For 8178/8250 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12810 event pairs, 230 based on Foata normal form. 1/1595 useless extension candidates. Maximal degree in co-relation 6036. Up to 725 conditions per place. [2021-11-20 07:11:09,944 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 37 changer transitions 36/298 dead transitions. [2021-11-20 07:11:09,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 298 transitions, 2788 flow [2021-11-20 07:11:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 07:11:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-20 07:11:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3050 transitions. [2021-11-20 07:11:09,947 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621189405297352 [2021-11-20 07:11:09,947 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3050 transitions. [2021-11-20 07:11:09,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3050 transitions. [2021-11-20 07:11:09,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:09,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3050 transitions. [2021-11-20 07:11:09,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.6086956521739) internal successors, (3050), 23 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:09,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:09,952 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:09,953 INFO L186 Difference]: Start difference. First operand has 312 places, 240 transitions, 1718 flow. Second operand 23 states and 3050 transitions. [2021-11-20 07:11:09,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 298 transitions, 2788 flow [2021-11-20 07:11:10,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 298 transitions, 2608 flow, removed 73 selfloop flow, removed 13 redundant places. [2021-11-20 07:11:10,019 INFO L242 Difference]: Finished difference. Result has 322 places, 250 transitions, 1926 flow [2021-11-20 07:11:10,020 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1926, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2021-11-20 07:11:10,021 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2021-11-20 07:11:10,021 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 1926 flow [2021-11-20 07:11:10,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:10,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:10,022 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] [2021-11-20 07:11:10,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 07:11:10,022 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash 186283984, now seen corresponding path program 27 times [2021-11-20 07:11:10,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:10,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705786839] [2021-11-20 07:11:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:10,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:10,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:10,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705786839] [2021-11-20 07:11:10,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705786839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:10,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:10,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:10,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939889252] [2021-11-20 07:11:10,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:10,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:10,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:10,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:10,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:10,150 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:10,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 1926 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:10,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:10,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:10,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:10,791 INFO L129 PetriNetUnfolder]: 302/1665 cut-off events. [2021-11-20 07:11:10,791 INFO L130 PetriNetUnfolder]: For 8325/8397 co-relation queries the response was YES. [2021-11-20 07:11:10,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6186 conditions, 1665 events. 302/1665 cut-off events. For 8325/8397 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12941 event pairs, 227 based on Foata normal form. 1/1602 useless extension candidates. Maximal degree in co-relation 6085. Up to 723 conditions per place. [2021-11-20 07:11:10,811 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 33 changer transitions 37/304 dead transitions. [2021-11-20 07:11:10,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 304 transitions, 3005 flow [2021-11-20 07:11:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:11:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 07:11:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2021-11-20 07:11:10,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2021-11-20 07:11:10,829 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2021-11-20 07:11:10,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2021-11-20 07:11:10,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:10,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2021-11-20 07:11:10,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:10,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:10,837 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:10,837 INFO L186 Difference]: Start difference. First operand has 322 places, 250 transitions, 1926 flow. Second operand 24 states and 3183 transitions. [2021-11-20 07:11:10,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 304 transitions, 3005 flow [2021-11-20 07:11:10,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 304 transitions, 2797 flow, removed 74 selfloop flow, removed 15 redundant places. [2021-11-20 07:11:10,967 INFO L242 Difference]: Finished difference. Result has 331 places, 254 transitions, 2023 flow [2021-11-20 07:11:10,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2023, PETRI_PLACES=331, PETRI_TRANSITIONS=254} [2021-11-20 07:11:10,968 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2021-11-20 07:11:10,969 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 254 transitions, 2023 flow [2021-11-20 07:11:10,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:10,969 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:10,969 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] [2021-11-20 07:11:10,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-20 07:11:10,970 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:10,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1267385680, now seen corresponding path program 28 times [2021-11-20 07:11:10,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:10,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135812284] [2021-11-20 07:11:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:10,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:11,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:11,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135812284] [2021-11-20 07:11:11,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135812284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:11,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:11,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:11,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434026999] [2021-11-20 07:11:11,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:11,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:11,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:11,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:11,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 254 transitions, 2023 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:11,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:11,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:11,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:11,803 INFO L129 PetriNetUnfolder]: 297/1649 cut-off events. [2021-11-20 07:11:11,803 INFO L130 PetriNetUnfolder]: For 7983/8055 co-relation queries the response was YES. [2021-11-20 07:11:11,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6050 conditions, 1649 events. 297/1649 cut-off events. For 7983/8055 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12732 event pairs, 223 based on Foata normal form. 1/1588 useless extension candidates. Maximal degree in co-relation 5946. Up to 725 conditions per place. [2021-11-20 07:11:11,830 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 35 changer transitions 32/298 dead transitions. [2021-11-20 07:11:11,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 298 transitions, 2863 flow [2021-11-20 07:11:11,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2021-11-20 07:11:11,833 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2021-11-20 07:11:11,833 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2021-11-20 07:11:11,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2021-11-20 07:11:11,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:11,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2021-11-20 07:11:11,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:11,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:11,839 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:11,839 INFO L186 Difference]: Start difference. First operand has 331 places, 254 transitions, 2023 flow. Second operand 20 states and 2661 transitions. [2021-11-20 07:11:11,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 298 transitions, 2863 flow [2021-11-20 07:11:11,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 298 transitions, 2721 flow, removed 56 selfloop flow, removed 12 redundant places. [2021-11-20 07:11:11,893 INFO L242 Difference]: Finished difference. Result has 332 places, 261 transitions, 2146 flow [2021-11-20 07:11:11,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2146, PETRI_PLACES=332, PETRI_TRANSITIONS=261} [2021-11-20 07:11:11,893 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2021-11-20 07:11:11,894 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 261 transitions, 2146 flow [2021-11-20 07:11:11,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:11,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:11,894 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] [2021-11-20 07:11:11,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-20 07:11:11,894 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2065607192, now seen corresponding path program 29 times [2021-11-20 07:11:11,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:11,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893157395] [2021-11-20 07:11:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:11,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:12,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:12,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893157395] [2021-11-20 07:11:12,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893157395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:12,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:12,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:12,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205073764] [2021-11-20 07:11:12,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:12,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:12,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:12,038 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:12,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 261 transitions, 2146 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:12,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:12,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:12,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:12,658 INFO L129 PetriNetUnfolder]: 300/1665 cut-off events. [2021-11-20 07:11:12,659 INFO L130 PetriNetUnfolder]: For 7304/7376 co-relation queries the response was YES. [2021-11-20 07:11:12,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 1665 events. 300/1665 cut-off events. For 7304/7376 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12924 event pairs, 225 based on Foata normal form. 1/1602 useless extension candidates. Maximal degree in co-relation 5976. Up to 727 conditions per place. [2021-11-20 07:11:12,679 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 78 selfloop transitions, 48 changer transitions 31/306 dead transitions. [2021-11-20 07:11:12,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 306 transitions, 3084 flow [2021-11-20 07:11:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:11:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:11:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2021-11-20 07:11:12,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2021-11-20 07:11:12,684 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2021-11-20 07:11:12,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2021-11-20 07:11:12,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:12,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2021-11-20 07:11:12,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:12,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:12,688 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:12,689 INFO L186 Difference]: Start difference. First operand has 332 places, 261 transitions, 2146 flow. Second operand 19 states and 2528 transitions. [2021-11-20 07:11:12,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 306 transitions, 3084 flow [2021-11-20 07:11:12,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 306 transitions, 2950 flow, removed 45 selfloop flow, removed 8 redundant places. [2021-11-20 07:11:12,735 INFO L242 Difference]: Finished difference. Result has 342 places, 269 transitions, 2339 flow [2021-11-20 07:11:12,736 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2339, PETRI_PLACES=342, PETRI_TRANSITIONS=269} [2021-11-20 07:11:12,736 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2021-11-20 07:11:12,736 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 269 transitions, 2339 flow [2021-11-20 07:11:12,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:12,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:12,737 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] [2021-11-20 07:11:12,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-20 07:11:12,738 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash 270600378, now seen corresponding path program 30 times [2021-11-20 07:11:12,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:12,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074544885] [2021-11-20 07:11:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:12,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:12,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:12,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074544885] [2021-11-20 07:11:12,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074544885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:12,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:12,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:12,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473049031] [2021-11-20 07:11:12,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:12,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:12,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:12,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:12,874 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:12,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 269 transitions, 2339 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:12,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:12,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:12,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:13,472 INFO L129 PetriNetUnfolder]: 297/1657 cut-off events. [2021-11-20 07:11:13,472 INFO L130 PetriNetUnfolder]: For 7471/7543 co-relation queries the response was YES. [2021-11-20 07:11:13,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6091 conditions, 1657 events. 297/1657 cut-off events. For 7471/7543 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12880 event pairs, 221 based on Foata normal form. 1/1595 useless extension candidates. Maximal degree in co-relation 5983. Up to 725 conditions per place. [2021-11-20 07:11:13,490 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 38 changer transitions 31/310 dead transitions. [2021-11-20 07:11:13,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 310 transitions, 3224 flow [2021-11-20 07:11:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2021-11-20 07:11:13,492 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2021-11-20 07:11:13,493 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2021-11-20 07:11:13,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2021-11-20 07:11:13,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:13,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2021-11-20 07:11:13,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:13,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:13,496 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:13,496 INFO L186 Difference]: Start difference. First operand has 342 places, 269 transitions, 2339 flow. Second operand 20 states and 2661 transitions. [2021-11-20 07:11:13,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 310 transitions, 3224 flow [2021-11-20 07:11:13,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 310 transitions, 3086 flow, removed 22 selfloop flow, removed 9 redundant places. [2021-11-20 07:11:13,544 INFO L242 Difference]: Finished difference. Result has 353 places, 275 transitions, 2450 flow [2021-11-20 07:11:13,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2450, PETRI_PLACES=353, PETRI_TRANSITIONS=275} [2021-11-20 07:11:13,544 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 196 predicate places. [2021-11-20 07:11:13,545 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 275 transitions, 2450 flow [2021-11-20 07:11:13,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:13,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:13,545 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] [2021-11-20 07:11:13,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-20 07:11:13,546 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:13,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:13,546 INFO L85 PathProgramCache]: Analyzing trace with hash 171323316, now seen corresponding path program 31 times [2021-11-20 07:11:13,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:13,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539205593] [2021-11-20 07:11:13,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:13,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:13,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:13,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539205593] [2021-11-20 07:11:13,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539205593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:13,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:13,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:13,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188604327] [2021-11-20 07:11:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:13,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:13,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:13,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:13,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:13,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:13,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 275 transitions, 2450 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:13,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:13,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:13,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:14,302 INFO L129 PetriNetUnfolder]: 294/1662 cut-off events. [2021-11-20 07:11:14,303 INFO L130 PetriNetUnfolder]: For 7629/7701 co-relation queries the response was YES. [2021-11-20 07:11:14,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6088 conditions, 1662 events. 294/1662 cut-off events. For 7629/7701 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13006 event pairs, 220 based on Foata normal form. 1/1600 useless extension candidates. Maximal degree in co-relation 5975. Up to 723 conditions per place. [2021-11-20 07:11:14,334 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 43 changer transitions 32/314 dead transitions. [2021-11-20 07:11:14,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 314 transitions, 3339 flow [2021-11-20 07:11:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2021-11-20 07:11:14,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2021-11-20 07:11:14,338 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2021-11-20 07:11:14,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2021-11-20 07:11:14,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:14,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2021-11-20 07:11:14,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:14,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:14,345 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:14,345 INFO L186 Difference]: Start difference. First operand has 353 places, 275 transitions, 2450 flow. Second operand 20 states and 2659 transitions. [2021-11-20 07:11:14,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 314 transitions, 3339 flow [2021-11-20 07:11:14,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 314 transitions, 3232 flow, removed 30 selfloop flow, removed 8 redundant places. [2021-11-20 07:11:14,398 INFO L242 Difference]: Finished difference. Result has 363 places, 279 transitions, 2576 flow [2021-11-20 07:11:14,399 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2576, PETRI_PLACES=363, PETRI_TRANSITIONS=279} [2021-11-20 07:11:14,399 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2021-11-20 07:11:14,399 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 279 transitions, 2576 flow [2021-11-20 07:11:14,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:14,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:14,399 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] [2021-11-20 07:11:14,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-20 07:11:14,400 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1648515442, now seen corresponding path program 32 times [2021-11-20 07:11:14,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:14,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887307517] [2021-11-20 07:11:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:14,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:14,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:14,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887307517] [2021-11-20 07:11:14,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887307517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:14,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:14,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:14,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517162158] [2021-11-20 07:11:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:14,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:14,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:14,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:14,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:14,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 279 transitions, 2576 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:14,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:14,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:14,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:15,113 INFO L129 PetriNetUnfolder]: 286/1644 cut-off events. [2021-11-20 07:11:15,114 INFO L130 PetriNetUnfolder]: For 7345/7417 co-relation queries the response was YES. [2021-11-20 07:11:15,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5935 conditions, 1644 events. 286/1644 cut-off events. For 7345/7417 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12890 event pairs, 219 based on Foata normal form. 1/1583 useless extension candidates. Maximal degree in co-relation 5818. Up to 718 conditions per place. [2021-11-20 07:11:15,134 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 20 changer transitions 47/304 dead transitions. [2021-11-20 07:11:15,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 304 transitions, 3122 flow [2021-11-20 07:11:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:11:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:11:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2530 transitions. [2021-11-20 07:11:15,136 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652752571082879 [2021-11-20 07:11:15,136 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2530 transitions. [2021-11-20 07:11:15,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2530 transitions. [2021-11-20 07:11:15,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:15,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2530 transitions. [2021-11-20 07:11:15,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.1578947368421) internal successors, (2530), 19 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:15,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:15,143 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:15,143 INFO L186 Difference]: Start difference. First operand has 363 places, 279 transitions, 2576 flow. Second operand 19 states and 2530 transitions. [2021-11-20 07:11:15,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 304 transitions, 3122 flow [2021-11-20 07:11:15,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 304 transitions, 3009 flow, removed 33 selfloop flow, removed 7 redundant places. [2021-11-20 07:11:15,225 INFO L242 Difference]: Finished difference. Result has 369 places, 255 transitions, 2103 flow [2021-11-20 07:11:15,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2103, PETRI_PLACES=369, PETRI_TRANSITIONS=255} [2021-11-20 07:11:15,226 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 212 predicate places. [2021-11-20 07:11:15,226 INFO L470 AbstractCegarLoop]: Abstraction has has 369 places, 255 transitions, 2103 flow [2021-11-20 07:11:15,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:15,227 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:15,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:15,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-20 07:11:15,227 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash 435629826, now seen corresponding path program 33 times [2021-11-20 07:11:15,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:15,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58638226] [2021-11-20 07:11:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:15,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:15,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:15,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58638226] [2021-11-20 07:11:15,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58638226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:15,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:15,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:15,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995780927] [2021-11-20 07:11:15,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:15,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:15,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:15,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:15,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 255 transitions, 2103 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:15,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:15,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:15,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:15,968 INFO L129 PetriNetUnfolder]: 282/1625 cut-off events. [2021-11-20 07:11:15,968 INFO L130 PetriNetUnfolder]: For 6618/6690 co-relation queries the response was YES. [2021-11-20 07:11:15,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 1625 events. 282/1625 cut-off events. For 6618/6690 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12634 event pairs, 220 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 5573. Up to 716 conditions per place. [2021-11-20 07:11:15,988 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 23 changer transitions 41/289 dead transitions. [2021-11-20 07:11:15,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 289 transitions, 2804 flow [2021-11-20 07:11:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:11:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 07:11:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2788 transitions. [2021-11-20 07:11:16,006 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629994526546251 [2021-11-20 07:11:16,007 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2788 transitions. [2021-11-20 07:11:16,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2788 transitions. [2021-11-20 07:11:16,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:16,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2788 transitions. [2021-11-20 07:11:16,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.76190476190476) internal successors, (2788), 21 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,012 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,013 INFO L186 Difference]: Start difference. First operand has 369 places, 255 transitions, 2103 flow. Second operand 21 states and 2788 transitions. [2021-11-20 07:11:16,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 289 transitions, 2804 flow [2021-11-20 07:11:16,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 289 transitions, 2592 flow, removed 31 selfloop flow, removed 24 redundant places. [2021-11-20 07:11:16,057 INFO L242 Difference]: Finished difference. Result has 345 places, 246 transitions, 1851 flow [2021-11-20 07:11:16,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1851, PETRI_PLACES=345, PETRI_TRANSITIONS=246} [2021-11-20 07:11:16,057 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2021-11-20 07:11:16,057 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 246 transitions, 1851 flow [2021-11-20 07:11:16,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,058 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:16,058 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] [2021-11-20 07:11:16,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-20 07:11:16,058 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:16,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:16,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1274527870, now seen corresponding path program 34 times [2021-11-20 07:11:16,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:16,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847213590] [2021-11-20 07:11:16,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:16,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:16,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:16,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847213590] [2021-11-20 07:11:16,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847213590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:16,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:16,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:16,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292000986] [2021-11-20 07:11:16,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:16,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:16,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:16,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:16,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:16,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:16,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 246 transitions, 1851 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:16,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:16,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:16,848 INFO L129 PetriNetUnfolder]: 275/1594 cut-off events. [2021-11-20 07:11:16,849 INFO L130 PetriNetUnfolder]: For 5759/5831 co-relation queries the response was YES. [2021-11-20 07:11:16,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5333 conditions, 1594 events. 275/1594 cut-off events. For 5759/5831 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12327 event pairs, 220 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 5223. Up to 712 conditions per place. [2021-11-20 07:11:16,866 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 63 selfloop transitions, 18 changer transitions 42/272 dead transitions. [2021-11-20 07:11:16,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 272 transitions, 2349 flow [2021-11-20 07:11:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:11:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:11:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2914 transitions. [2021-11-20 07:11:16,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612330198537095 [2021-11-20 07:11:16,868 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2914 transitions. [2021-11-20 07:11:16,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2914 transitions. [2021-11-20 07:11:16,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:16,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2914 transitions. [2021-11-20 07:11:16,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.45454545454547) internal successors, (2914), 22 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,873 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,873 INFO L186 Difference]: Start difference. First operand has 345 places, 246 transitions, 1851 flow. Second operand 22 states and 2914 transitions. [2021-11-20 07:11:16,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 272 transitions, 2349 flow [2021-11-20 07:11:16,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 272 transitions, 2194 flow, removed 25 selfloop flow, removed 24 redundant places. [2021-11-20 07:11:16,910 INFO L242 Difference]: Finished difference. Result has 331 places, 229 transitions, 1518 flow [2021-11-20 07:11:16,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1518, PETRI_PLACES=331, PETRI_TRANSITIONS=229} [2021-11-20 07:11:16,911 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2021-11-20 07:11:16,911 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 229 transitions, 1518 flow [2021-11-20 07:11:16,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:16,912 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:16,912 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] [2021-11-20 07:11:16,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-20 07:11:16,913 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:16,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:16,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1378785850, now seen corresponding path program 35 times [2021-11-20 07:11:16,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:16,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260852055] [2021-11-20 07:11:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:16,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:17,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:17,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260852055] [2021-11-20 07:11:17,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260852055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:17,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:17,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:17,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343545843] [2021-11-20 07:11:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:17,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:17,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:17,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:17,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:17,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 229 transitions, 1518 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:17,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:17,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:17,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:17,651 INFO L129 PetriNetUnfolder]: 263/1506 cut-off events. [2021-11-20 07:11:17,651 INFO L130 PetriNetUnfolder]: For 5063/5135 co-relation queries the response was YES. [2021-11-20 07:11:17,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 1506 events. 263/1506 cut-off events. For 5063/5135 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11407 event pairs, 218 based on Foata normal form. 1/1446 useless extension candidates. Maximal degree in co-relation 4805. Up to 690 conditions per place. [2021-11-20 07:11:17,667 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 51 selfloop transitions, 2 changer transitions 51/249 dead transitions. [2021-11-20 07:11:17,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 249 transitions, 1886 flow [2021-11-20 07:11:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2021-11-20 07:11:17,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-11-20 07:11:17,670 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2021-11-20 07:11:17,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2021-11-20 07:11:17,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:17,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2021-11-20 07:11:17,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:17,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:17,677 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:17,677 INFO L186 Difference]: Start difference. First operand has 331 places, 229 transitions, 1518 flow. Second operand 20 states and 2645 transitions. [2021-11-20 07:11:17,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 249 transitions, 1886 flow [2021-11-20 07:11:17,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 249 transitions, 1754 flow, removed 26 selfloop flow, removed 25 redundant places. [2021-11-20 07:11:17,720 INFO L242 Difference]: Finished difference. Result has 306 places, 198 transitions, 1011 flow [2021-11-20 07:11:17,721 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1011, PETRI_PLACES=306, PETRI_TRANSITIONS=198} [2021-11-20 07:11:17,721 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2021-11-20 07:11:17,721 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 198 transitions, 1011 flow [2021-11-20 07:11:17,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:17,722 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:17,722 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] [2021-11-20 07:11:17,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-20 07:11:17,722 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1278179584, now seen corresponding path program 1 times [2021-11-20 07:11:17,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:17,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433658118] [2021-11-20 07:11:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:17,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:17,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:17,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433658118] [2021-11-20 07:11:17,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433658118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:17,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:17,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:17,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842989755] [2021-11-20 07:11:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:17,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:17,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:17,841 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:17,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 198 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:17,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:17,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:17,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:18,390 INFO L129 PetriNetUnfolder]: 327/1613 cut-off events. [2021-11-20 07:11:18,390 INFO L130 PetriNetUnfolder]: For 5252/5323 co-relation queries the response was YES. [2021-11-20 07:11:18,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5144 conditions, 1613 events. 327/1613 cut-off events. For 5252/5323 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11935 event pairs, 181 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 5056. Up to 597 conditions per place. [2021-11-20 07:11:18,415 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 80 selfloop transitions, 14 changer transitions 32/272 dead transitions. [2021-11-20 07:11:18,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 272 transitions, 1942 flow [2021-11-20 07:11:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:11:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:11:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2021-11-20 07:11:18,418 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-11-20 07:11:18,418 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2021-11-20 07:11:18,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2021-11-20 07:11:18,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:18,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2021-11-20 07:11:18,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:18,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:18,422 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:18,422 INFO L186 Difference]: Start difference. First operand has 306 places, 198 transitions, 1011 flow. Second operand 22 states and 2926 transitions. [2021-11-20 07:11:18,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 272 transitions, 1942 flow [2021-11-20 07:11:18,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 272 transitions, 1870 flow, removed 24 selfloop flow, removed 27 redundant places. [2021-11-20 07:11:18,445 INFO L242 Difference]: Finished difference. Result has 278 places, 211 transitions, 1151 flow [2021-11-20 07:11:18,445 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1151, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2021-11-20 07:11:18,446 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 121 predicate places. [2021-11-20 07:11:18,446 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 1151 flow [2021-11-20 07:11:18,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:18,446 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:18,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:18,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-20 07:11:18,446 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1783627810, now seen corresponding path program 2 times [2021-11-20 07:11:18,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:18,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191248505] [2021-11-20 07:11:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:18,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:18,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191248505] [2021-11-20 07:11:18,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191248505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:18,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:18,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:18,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096142180] [2021-11-20 07:11:18,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:18,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:18,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:18,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:18,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:18,547 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:18,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 1151 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:18,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:18,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:18,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:19,150 INFO L129 PetriNetUnfolder]: 323/1610 cut-off events. [2021-11-20 07:11:19,150 INFO L130 PetriNetUnfolder]: For 11072/11137 co-relation queries the response was YES. [2021-11-20 07:11:19,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 1610 events. 323/1610 cut-off events. For 11072/11137 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11925 event pairs, 170 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 6217. Up to 542 conditions per place. [2021-11-20 07:11:19,166 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 12 changer transitions 46/326 dead transitions. [2021-11-20 07:11:19,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 326 transitions, 2691 flow [2021-11-20 07:11:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 07:11:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-20 07:11:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2021-11-20 07:11:19,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2021-11-20 07:11:19,169 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2021-11-20 07:11:19,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2021-11-20 07:11:19,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:19,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2021-11-20 07:11:19,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:19,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:19,175 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:19,175 INFO L186 Difference]: Start difference. First operand has 278 places, 211 transitions, 1151 flow. Second operand 31 states and 4111 transitions. [2021-11-20 07:11:19,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 326 transitions, 2691 flow [2021-11-20 07:11:19,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 326 transitions, 2253 flow, removed 219 selfloop flow, removed 14 redundant places. [2021-11-20 07:11:19,207 INFO L242 Difference]: Finished difference. Result has 307 places, 214 transitions, 1196 flow [2021-11-20 07:11:19,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1196, PETRI_PLACES=307, PETRI_TRANSITIONS=214} [2021-11-20 07:11:19,207 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 150 predicate places. [2021-11-20 07:11:19,207 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 214 transitions, 1196 flow [2021-11-20 07:11:19,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:19,208 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:19,208 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] [2021-11-20 07:11:19,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-20 07:11:19,208 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -758953314, now seen corresponding path program 3 times [2021-11-20 07:11:19,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988745384] [2021-11-20 07:11:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:19,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:19,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:19,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988745384] [2021-11-20 07:11:19,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988745384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:19,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:19,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:19,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885233096] [2021-11-20 07:11:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:19,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:19,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:19,335 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:19,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 214 transitions, 1196 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:19,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:19,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:19,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:20,065 INFO L129 PetriNetUnfolder]: 334/1718 cut-off events. [2021-11-20 07:11:20,065 INFO L130 PetriNetUnfolder]: For 10559/10624 co-relation queries the response was YES. [2021-11-20 07:11:20,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6531 conditions, 1718 events. 334/1718 cut-off events. For 10559/10624 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13139 event pairs, 168 based on Foata normal form. 2/1661 useless extension candidates. Maximal degree in co-relation 6435. Up to 540 conditions per place. [2021-11-20 07:11:20,081 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 148 selfloop transitions, 10 changer transitions 46/350 dead transitions. [2021-11-20 07:11:20,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 350 transitions, 3074 flow [2021-11-20 07:11:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:11:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:11:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2021-11-20 07:11:20,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2021-11-20 07:11:20,084 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2021-11-20 07:11:20,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2021-11-20 07:11:20,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:20,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2021-11-20 07:11:20,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:20,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:20,090 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:20,090 INFO L186 Difference]: Start difference. First operand has 307 places, 214 transitions, 1196 flow. Second operand 30 states and 3982 transitions. [2021-11-20 07:11:20,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 350 transitions, 3074 flow [2021-11-20 07:11:20,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 350 transitions, 2790 flow, removed 120 selfloop flow, removed 21 redundant places. [2021-11-20 07:11:20,125 INFO L242 Difference]: Finished difference. Result has 321 places, 218 transitions, 1296 flow [2021-11-20 07:11:20,126 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1296, PETRI_PLACES=321, PETRI_TRANSITIONS=218} [2021-11-20 07:11:20,126 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2021-11-20 07:11:20,126 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 218 transitions, 1296 flow [2021-11-20 07:11:20,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:20,127 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:20,127 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] [2021-11-20 07:11:20,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-20 07:11:20,127 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1874127164, now seen corresponding path program 4 times [2021-11-20 07:11:20,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:20,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495197587] [2021-11-20 07:11:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:20,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:20,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:20,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495197587] [2021-11-20 07:11:20,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495197587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:20,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:20,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:20,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424711951] [2021-11-20 07:11:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:20,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:20,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:20,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:20,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:20,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 218 transitions, 1296 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:20,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:20,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:20,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:20,958 INFO L129 PetriNetUnfolder]: 327/1660 cut-off events. [2021-11-20 07:11:20,958 INFO L130 PetriNetUnfolder]: For 14547/14617 co-relation queries the response was YES. [2021-11-20 07:11:20,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 1660 events. 327/1660 cut-off events. For 14547/14617 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12492 event pairs, 194 based on Foata normal form. 2/1595 useless extension candidates. Maximal degree in co-relation 6904. Up to 655 conditions per place. [2021-11-20 07:11:20,979 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 22 changer transitions 23/287 dead transitions. [2021-11-20 07:11:20,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 287 transitions, 2562 flow [2021-11-20 07:11:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:11:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:11:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2021-11-20 07:11:20,981 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2021-11-20 07:11:20,981 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2021-11-20 07:11:20,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2021-11-20 07:11:20,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:20,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2021-11-20 07:11:20,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:20,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:20,985 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:20,985 INFO L186 Difference]: Start difference. First operand has 321 places, 218 transitions, 1296 flow. Second operand 19 states and 2529 transitions. [2021-11-20 07:11:20,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 287 transitions, 2562 flow [2021-11-20 07:11:21,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 287 transitions, 2280 flow, removed 140 selfloop flow, removed 21 redundant places. [2021-11-20 07:11:21,032 INFO L242 Difference]: Finished difference. Result has 309 places, 232 transitions, 1515 flow [2021-11-20 07:11:21,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1515, PETRI_PLACES=309, PETRI_TRANSITIONS=232} [2021-11-20 07:11:21,033 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 152 predicate places. [2021-11-20 07:11:21,033 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 232 transitions, 1515 flow [2021-11-20 07:11:21,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:21,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:21,033 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] [2021-11-20 07:11:21,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-20 07:11:21,034 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:21,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:21,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1770588758, now seen corresponding path program 5 times [2021-11-20 07:11:21,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:21,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24394307] [2021-11-20 07:11:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:21,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:21,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24394307] [2021-11-20 07:11:21,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24394307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:21,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:21,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:21,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109844018] [2021-11-20 07:11:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:21,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:21,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:21,164 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:21,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 232 transitions, 1515 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:21,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:21,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:21,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:21,885 INFO L129 PetriNetUnfolder]: 372/1805 cut-off events. [2021-11-20 07:11:21,885 INFO L130 PetriNetUnfolder]: For 12496/12577 co-relation queries the response was YES. [2021-11-20 07:11:21,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7520 conditions, 1805 events. 372/1805 cut-off events. For 12496/12577 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13772 event pairs, 224 based on Foata normal form. 3/1737 useless extension candidates. Maximal degree in co-relation 7421. Up to 663 conditions per place. [2021-11-20 07:11:21,905 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 17 changer transitions 40/321 dead transitions. [2021-11-20 07:11:21,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 321 transitions, 3124 flow [2021-11-20 07:11:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 07:11:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-20 07:11:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2021-11-20 07:11:21,907 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2021-11-20 07:11:21,907 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2021-11-20 07:11:21,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2021-11-20 07:11:21,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:21,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2021-11-20 07:11:21,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:21,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:21,912 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:21,913 INFO L186 Difference]: Start difference. First operand has 309 places, 232 transitions, 1515 flow. Second operand 27 states and 3580 transitions. [2021-11-20 07:11:21,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 321 transitions, 3124 flow [2021-11-20 07:11:21,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 321 transitions, 2915 flow, removed 83 selfloop flow, removed 8 redundant places. [2021-11-20 07:11:21,959 INFO L242 Difference]: Finished difference. Result has 341 places, 244 transitions, 1677 flow [2021-11-20 07:11:21,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1677, PETRI_PLACES=341, PETRI_TRANSITIONS=244} [2021-11-20 07:11:21,959 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2021-11-20 07:11:21,959 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 244 transitions, 1677 flow [2021-11-20 07:11:21,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:21,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:21,960 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] [2021-11-20 07:11:21,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-20 07:11:21,960 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash -810899648, now seen corresponding path program 6 times [2021-11-20 07:11:21,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:21,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784453767] [2021-11-20 07:11:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:21,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:22,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:22,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784453767] [2021-11-20 07:11:22,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784453767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:22,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:22,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:22,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060902759] [2021-11-20 07:11:22,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:22,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:22,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:22,081 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:22,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 244 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:22,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:22,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:22,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:22,820 INFO L129 PetriNetUnfolder]: 355/1737 cut-off events. [2021-11-20 07:11:22,820 INFO L130 PetriNetUnfolder]: For 16242/16315 co-relation queries the response was YES. [2021-11-20 07:11:22,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 1737 events. 355/1737 cut-off events. For 16242/16315 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13205 event pairs, 218 based on Foata normal form. 5/1674 useless extension candidates. Maximal degree in co-relation 7808. Up to 687 conditions per place. [2021-11-20 07:11:22,843 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 108 selfloop transitions, 33 changer transitions 36/323 dead transitions. [2021-11-20 07:11:22,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 323 transitions, 3422 flow [2021-11-20 07:11:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 07:11:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-20 07:11:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2021-11-20 07:11:22,845 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2021-11-20 07:11:22,845 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2021-11-20 07:11:22,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2021-11-20 07:11:22,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:22,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2021-11-20 07:11:22,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:22,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:22,850 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:22,850 INFO L186 Difference]: Start difference. First operand has 341 places, 244 transitions, 1677 flow. Second operand 25 states and 3312 transitions. [2021-11-20 07:11:22,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 323 transitions, 3422 flow [2021-11-20 07:11:22,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 323 transitions, 3136 flow, removed 143 selfloop flow, removed 16 redundant places. [2021-11-20 07:11:22,916 INFO L242 Difference]: Finished difference. Result has 350 places, 259 transitions, 2014 flow [2021-11-20 07:11:22,917 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2014, PETRI_PLACES=350, PETRI_TRANSITIONS=259} [2021-11-20 07:11:22,917 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 193 predicate places. [2021-11-20 07:11:22,917 INFO L470 AbstractCegarLoop]: Abstraction has has 350 places, 259 transitions, 2014 flow [2021-11-20 07:11:22,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:22,918 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:22,918 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] [2021-11-20 07:11:22,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-20 07:11:22,918 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:22,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:22,918 INFO L85 PathProgramCache]: Analyzing trace with hash -124584852, now seen corresponding path program 7 times [2021-11-20 07:11:22,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:22,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055418848] [2021-11-20 07:11:22,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:22,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:23,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:23,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055418848] [2021-11-20 07:11:23,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055418848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:23,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:23,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:23,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868484408] [2021-11-20 07:11:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:23,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:23,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:23,037 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:23,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 259 transitions, 2014 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:23,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:23,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:23,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:23,847 INFO L129 PetriNetUnfolder]: 367/1777 cut-off events. [2021-11-20 07:11:23,847 INFO L130 PetriNetUnfolder]: For 16439/16512 co-relation queries the response was YES. [2021-11-20 07:11:23,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8185 conditions, 1777 events. 367/1777 cut-off events. For 16439/16512 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13636 event pairs, 202 based on Foata normal form. 2/1708 useless extension candidates. Maximal degree in co-relation 8065. Up to 612 conditions per place. [2021-11-20 07:11:23,875 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 25 changer transitions 40/338 dead transitions. [2021-11-20 07:11:23,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 338 transitions, 3717 flow [2021-11-20 07:11:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 07:11:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 07:11:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2021-11-20 07:11:23,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2021-11-20 07:11:23,877 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2021-11-20 07:11:23,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2021-11-20 07:11:23,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:23,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2021-11-20 07:11:23,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:23,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:23,884 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:23,884 INFO L186 Difference]: Start difference. First operand has 350 places, 259 transitions, 2014 flow. Second operand 26 states and 3449 transitions. [2021-11-20 07:11:23,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 338 transitions, 3717 flow [2021-11-20 07:11:23,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 338 transitions, 3355 flow, removed 166 selfloop flow, removed 15 redundant places. [2021-11-20 07:11:23,971 INFO L242 Difference]: Finished difference. Result has 368 places, 268 transitions, 2115 flow [2021-11-20 07:11:23,972 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2115, PETRI_PLACES=368, PETRI_TRANSITIONS=268} [2021-11-20 07:11:23,972 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2021-11-20 07:11:23,972 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 268 transitions, 2115 flow [2021-11-20 07:11:23,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:23,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:23,973 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] [2021-11-20 07:11:23,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-20 07:11:23,974 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1643764406, now seen corresponding path program 8 times [2021-11-20 07:11:23,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:23,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034633853] [2021-11-20 07:11:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:23,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:24,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:24,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034633853] [2021-11-20 07:11:24,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034633853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:24,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:24,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:24,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694192247] [2021-11-20 07:11:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:24,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:24,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:24,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:24,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 268 transitions, 2115 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:24,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:24,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:24,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:24,919 INFO L129 PetriNetUnfolder]: 363/1791 cut-off events. [2021-11-20 07:11:24,919 INFO L130 PetriNetUnfolder]: For 18277/18354 co-relation queries the response was YES. [2021-11-20 07:11:24,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8354 conditions, 1791 events. 363/1791 cut-off events. For 18277/18354 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13811 event pairs, 201 based on Foata normal form. 8/1735 useless extension candidates. Maximal degree in co-relation 8225. Up to 679 conditions per place. [2021-11-20 07:11:24,943 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 36 changer transitions 47/356 dead transitions. [2021-11-20 07:11:24,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 356 transitions, 3772 flow [2021-11-20 07:11:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:11:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:11:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2021-11-20 07:11:24,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2021-11-20 07:11:24,946 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2021-11-20 07:11:24,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2021-11-20 07:11:24,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:24,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2021-11-20 07:11:24,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:24,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:24,954 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:24,955 INFO L186 Difference]: Start difference. First operand has 368 places, 268 transitions, 2115 flow. Second operand 28 states and 3707 transitions. [2021-11-20 07:11:24,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 356 transitions, 3772 flow [2021-11-20 07:11:25,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 356 transitions, 3559 flow, removed 96 selfloop flow, removed 18 redundant places. [2021-11-20 07:11:25,049 INFO L242 Difference]: Finished difference. Result has 379 places, 268 transitions, 2167 flow [2021-11-20 07:11:25,049 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2167, PETRI_PLACES=379, PETRI_TRANSITIONS=268} [2021-11-20 07:11:25,049 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2021-11-20 07:11:25,050 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 268 transitions, 2167 flow [2021-11-20 07:11:25,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:25,050 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:25,050 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] [2021-11-20 07:11:25,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-20 07:11:25,051 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:25,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:25,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1961861100, now seen corresponding path program 9 times [2021-11-20 07:11:25,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:25,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344070817] [2021-11-20 07:11:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:25,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:25,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:25,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344070817] [2021-11-20 07:11:25,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344070817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:25,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:25,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:25,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575627719] [2021-11-20 07:11:25,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:25,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:25,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:25,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:25,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:25,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 268 transitions, 2167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:25,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:25,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:25,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:25,836 INFO L129 PetriNetUnfolder]: 355/1732 cut-off events. [2021-11-20 07:11:25,836 INFO L130 PetriNetUnfolder]: For 14903/14979 co-relation queries the response was YES. [2021-11-20 07:11:25,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7938 conditions, 1732 events. 355/1732 cut-off events. For 14903/14979 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13214 event pairs, 213 based on Foata normal form. 8/1674 useless extension candidates. Maximal degree in co-relation 7806. Up to 702 conditions per place. [2021-11-20 07:11:25,863 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 37 changer transitions 31/330 dead transitions. [2021-11-20 07:11:25,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 330 transitions, 3405 flow [2021-11-20 07:11:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2657 transitions. [2021-11-20 07:11:25,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635057471264368 [2021-11-20 07:11:25,865 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2657 transitions. [2021-11-20 07:11:25,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2657 transitions. [2021-11-20 07:11:25,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:25,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2657 transitions. [2021-11-20 07:11:25,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.85) internal successors, (2657), 20 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:25,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:25,869 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:25,869 INFO L186 Difference]: Start difference. First operand has 379 places, 268 transitions, 2167 flow. Second operand 20 states and 2657 transitions. [2021-11-20 07:11:25,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 330 transitions, 3405 flow [2021-11-20 07:11:25,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 330 transitions, 3195 flow, removed 66 selfloop flow, removed 22 redundant places. [2021-11-20 07:11:25,954 INFO L242 Difference]: Finished difference. Result has 365 places, 268 transitions, 2150 flow [2021-11-20 07:11:25,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2150, PETRI_PLACES=365, PETRI_TRANSITIONS=268} [2021-11-20 07:11:25,954 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2021-11-20 07:11:25,955 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 268 transitions, 2150 flow [2021-11-20 07:11:25,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:25,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:25,955 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] [2021-11-20 07:11:25,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-20 07:11:25,955 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash -131819392, now seen corresponding path program 10 times [2021-11-20 07:11:25,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:25,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667747167] [2021-11-20 07:11:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:25,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:26,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667747167] [2021-11-20 07:11:26,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667747167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:26,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:26,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:26,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248897083] [2021-11-20 07:11:26,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:26,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:26,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:26,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:26,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:26,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 268 transitions, 2150 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:26,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:26,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:26,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:26,799 INFO L129 PetriNetUnfolder]: 339/1685 cut-off events. [2021-11-20 07:11:26,799 INFO L130 PetriNetUnfolder]: For 13342/13418 co-relation queries the response was YES. [2021-11-20 07:11:26,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7498 conditions, 1685 events. 339/1685 cut-off events. For 13342/13418 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12809 event pairs, 204 based on Foata normal form. 8/1629 useless extension candidates. Maximal degree in co-relation 7376. Up to 677 conditions per place. [2021-11-20 07:11:26,823 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 20 changer transitions 44/322 dead transitions. [2021-11-20 07:11:26,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 322 transitions, 3188 flow [2021-11-20 07:11:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:11:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 07:11:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3172 transitions. [2021-11-20 07:11:26,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7595785440613027 [2021-11-20 07:11:26,826 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3172 transitions. [2021-11-20 07:11:26,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3172 transitions. [2021-11-20 07:11:26,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:26,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3172 transitions. [2021-11-20 07:11:26,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.16666666666666) internal successors, (3172), 24 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:26,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:26,833 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:26,833 INFO L186 Difference]: Start difference. First operand has 365 places, 268 transitions, 2150 flow. Second operand 24 states and 3172 transitions. [2021-11-20 07:11:26,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 322 transitions, 3188 flow [2021-11-20 07:11:26,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 322 transitions, 3064 flow, removed 21 selfloop flow, removed 14 redundant places. [2021-11-20 07:11:26,907 INFO L242 Difference]: Finished difference. Result has 372 places, 247 transitions, 1816 flow [2021-11-20 07:11:26,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1816, PETRI_PLACES=372, PETRI_TRANSITIONS=247} [2021-11-20 07:11:26,908 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2021-11-20 07:11:26,908 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 247 transitions, 1816 flow [2021-11-20 07:11:26,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:26,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:26,908 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] [2021-11-20 07:11:26,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-20 07:11:26,908 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:26,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:26,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2019740872, now seen corresponding path program 11 times [2021-11-20 07:11:26,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:26,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818352498] [2021-11-20 07:11:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:26,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:27,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:27,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818352498] [2021-11-20 07:11:27,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818352498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:27,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:27,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:27,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976995855] [2021-11-20 07:11:27,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:27,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:27,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:27,019 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:27,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 247 transitions, 1816 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:27,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:27,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:27,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:27,676 INFO L129 PetriNetUnfolder]: 345/1726 cut-off events. [2021-11-20 07:11:27,676 INFO L130 PetriNetUnfolder]: For 14388/14468 co-relation queries the response was YES. [2021-11-20 07:11:27,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7599 conditions, 1726 events. 345/1726 cut-off events. For 14388/14468 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13057 event pairs, 226 based on Foata normal form. 4/1659 useless extension candidates. Maximal degree in co-relation 7474. Up to 679 conditions per place. [2021-11-20 07:11:27,716 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 30 changer transitions 27/303 dead transitions. [2021-11-20 07:11:27,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 303 transitions, 3027 flow [2021-11-20 07:11:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:11:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:11:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2021-11-20 07:11:27,719 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2021-11-20 07:11:27,719 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2021-11-20 07:11:27,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2021-11-20 07:11:27,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:27,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2021-11-20 07:11:27,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:27,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:27,725 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:27,725 INFO L186 Difference]: Start difference. First operand has 372 places, 247 transitions, 1816 flow. Second operand 22 states and 2919 transitions. [2021-11-20 07:11:27,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 303 transitions, 3027 flow [2021-11-20 07:11:27,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 303 transitions, 2791 flow, removed 52 selfloop flow, removed 23 redundant places. [2021-11-20 07:11:27,789 INFO L242 Difference]: Finished difference. Result has 349 places, 259 transitions, 2024 flow [2021-11-20 07:11:27,789 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2024, PETRI_PLACES=349, PETRI_TRANSITIONS=259} [2021-11-20 07:11:27,789 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2021-11-20 07:11:27,790 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 259 transitions, 2024 flow [2021-11-20 07:11:27,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:27,790 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:27,790 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] [2021-11-20 07:11:27,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-20 07:11:27,790 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1680956356, now seen corresponding path program 12 times [2021-11-20 07:11:27,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:27,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426072182] [2021-11-20 07:11:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:27,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:27,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:27,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426072182] [2021-11-20 07:11:27,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426072182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:27,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:27,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:27,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726637523] [2021-11-20 07:11:27,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:27,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:27,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:27,901 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:27,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 259 transitions, 2024 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:27,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:27,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:27,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:28,507 INFO L129 PetriNetUnfolder]: 344/1703 cut-off events. [2021-11-20 07:11:28,507 INFO L130 PetriNetUnfolder]: For 12633/12705 co-relation queries the response was YES. [2021-11-20 07:11:28,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 1703 events. 344/1703 cut-off events. For 12633/12705 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12911 event pairs, 215 based on Foata normal form. 4/1639 useless extension candidates. Maximal degree in co-relation 7364. Up to 677 conditions per place. [2021-11-20 07:11:28,530 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 38 changer transitions 27/317 dead transitions. [2021-11-20 07:11:28,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 3266 flow [2021-11-20 07:11:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2021-11-20 07:11:28,532 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2021-11-20 07:11:28,532 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2021-11-20 07:11:28,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2021-11-20 07:11:28,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:28,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2021-11-20 07:11:28,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:28,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:28,536 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:28,536 INFO L186 Difference]: Start difference. First operand has 349 places, 259 transitions, 2024 flow. Second operand 20 states and 2662 transitions. [2021-11-20 07:11:28,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 3266 flow [2021-11-20 07:11:28,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 317 transitions, 3066 flow, removed 92 selfloop flow, removed 5 redundant places. [2021-11-20 07:11:28,602 INFO L242 Difference]: Finished difference. Result has 365 places, 271 transitions, 2241 flow [2021-11-20 07:11:28,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2241, PETRI_PLACES=365, PETRI_TRANSITIONS=271} [2021-11-20 07:11:28,603 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2021-11-20 07:11:28,603 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 271 transitions, 2241 flow [2021-11-20 07:11:28,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:28,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:28,603 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] [2021-11-20 07:11:28,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-20 07:11:28,604 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1695201158, now seen corresponding path program 13 times [2021-11-20 07:11:28,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:28,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736964694] [2021-11-20 07:11:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:28,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:28,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:28,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736964694] [2021-11-20 07:11:28,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736964694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:28,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:28,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:28,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588317455] [2021-11-20 07:11:28,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:28,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:28,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:28,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:28,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 271 transitions, 2241 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:28,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:28,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:28,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:29,404 INFO L129 PetriNetUnfolder]: 346/1753 cut-off events. [2021-11-20 07:11:29,404 INFO L130 PetriNetUnfolder]: For 13280/13360 co-relation queries the response was YES. [2021-11-20 07:11:29,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7556 conditions, 1753 events. 346/1753 cut-off events. For 13280/13360 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13423 event pairs, 226 based on Foata normal form. 4/1686 useless extension candidates. Maximal degree in co-relation 7430. Up to 679 conditions per place. [2021-11-20 07:11:29,427 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 37 changer transitions 29/322 dead transitions. [2021-11-20 07:11:29,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 322 transitions, 3409 flow [2021-11-20 07:11:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:11:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 07:11:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2021-11-20 07:11:29,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2021-11-20 07:11:29,429 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2021-11-20 07:11:29,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2021-11-20 07:11:29,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:29,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2021-11-20 07:11:29,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:29,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:29,433 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:29,433 INFO L186 Difference]: Start difference. First operand has 365 places, 271 transitions, 2241 flow. Second operand 21 states and 2792 transitions. [2021-11-20 07:11:29,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 322 transitions, 3409 flow [2021-11-20 07:11:29,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 3287 flow, removed 37 selfloop flow, removed 8 redundant places. [2021-11-20 07:11:29,501 INFO L242 Difference]: Finished difference. Result has 380 places, 278 transitions, 2421 flow [2021-11-20 07:11:29,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2421, PETRI_PLACES=380, PETRI_TRANSITIONS=278} [2021-11-20 07:11:29,501 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2021-11-20 07:11:29,501 INFO L470 AbstractCegarLoop]: Abstraction has has 380 places, 278 transitions, 2421 flow [2021-11-20 07:11:29,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:29,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:29,502 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] [2021-11-20 07:11:29,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-20 07:11:29,502 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:29,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1762258768, now seen corresponding path program 14 times [2021-11-20 07:11:29,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:29,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509686416] [2021-11-20 07:11:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:29,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:29,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:29,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509686416] [2021-11-20 07:11:29,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509686416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:29,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:29,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:29,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544440454] [2021-11-20 07:11:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:29,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:29,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:29,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:29,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 278 transitions, 2421 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:29,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:29,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:29,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:30,394 INFO L129 PetriNetUnfolder]: 351/1759 cut-off events. [2021-11-20 07:11:30,394 INFO L130 PetriNetUnfolder]: For 13972/14044 co-relation queries the response was YES. [2021-11-20 07:11:30,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1759 events. 351/1759 cut-off events. For 13972/14044 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13480 event pairs, 212 based on Foata normal form. 4/1696 useless extension candidates. Maximal degree in co-relation 7696. Up to 680 conditions per place. [2021-11-20 07:11:30,422 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 37 changer transitions 42/343 dead transitions. [2021-11-20 07:11:30,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 343 transitions, 3828 flow [2021-11-20 07:11:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 07:11:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-20 07:11:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2021-11-20 07:11:30,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2021-11-20 07:11:30,425 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2021-11-20 07:11:30,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2021-11-20 07:11:30,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:30,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2021-11-20 07:11:30,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:30,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:30,431 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:30,431 INFO L186 Difference]: Start difference. First operand has 380 places, 278 transitions, 2421 flow. Second operand 23 states and 3056 transitions. [2021-11-20 07:11:30,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 343 transitions, 3828 flow [2021-11-20 07:11:30,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 343 transitions, 3632 flow, removed 71 selfloop flow, removed 7 redundant places. [2021-11-20 07:11:30,521 INFO L242 Difference]: Finished difference. Result has 399 places, 283 transitions, 2547 flow [2021-11-20 07:11:30,521 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2547, PETRI_PLACES=399, PETRI_TRANSITIONS=283} [2021-11-20 07:11:30,522 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 242 predicate places. [2021-11-20 07:11:30,522 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 283 transitions, 2547 flow [2021-11-20 07:11:30,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:30,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:30,522 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] [2021-11-20 07:11:30,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-20 07:11:30,522 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1557037984, now seen corresponding path program 15 times [2021-11-20 07:11:30,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:30,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185311876] [2021-11-20 07:11:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:30,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:30,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:30,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185311876] [2021-11-20 07:11:30,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185311876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:30,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:30,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:30,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046631354] [2021-11-20 07:11:30,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:30,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:30,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:30,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:30,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:30,652 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:30,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 283 transitions, 2547 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:30,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:30,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:30,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:31,500 INFO L129 PetriNetUnfolder]: 346/1738 cut-off events. [2021-11-20 07:11:31,500 INFO L130 PetriNetUnfolder]: For 14833/14905 co-relation queries the response was YES. [2021-11-20 07:11:31,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1738 events. 346/1738 cut-off events. For 14833/14905 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13293 event pairs, 211 based on Foata normal form. 4/1675 useless extension candidates. Maximal degree in co-relation 7688. Up to 675 conditions per place. [2021-11-20 07:11:31,528 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 115 selfloop transitions, 39 changer transitions 40/340 dead transitions. [2021-11-20 07:11:31,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 340 transitions, 3770 flow [2021-11-20 07:11:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:11:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 07:11:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2021-11-20 07:11:31,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2021-11-20 07:11:31,533 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2021-11-20 07:11:31,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2021-11-20 07:11:31,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:31,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2021-11-20 07:11:31,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:31,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:31,538 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:31,538 INFO L186 Difference]: Start difference. First operand has 399 places, 283 transitions, 2547 flow. Second operand 24 states and 3187 transitions. [2021-11-20 07:11:31,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 340 transitions, 3770 flow [2021-11-20 07:11:31,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 340 transitions, 3568 flow, removed 53 selfloop flow, removed 17 redundant places. [2021-11-20 07:11:31,635 INFO L242 Difference]: Finished difference. Result has 404 places, 282 transitions, 2533 flow [2021-11-20 07:11:31,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2533, PETRI_PLACES=404, PETRI_TRANSITIONS=282} [2021-11-20 07:11:31,635 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2021-11-20 07:11:31,636 INFO L470 AbstractCegarLoop]: Abstraction has has 404 places, 282 transitions, 2533 flow [2021-11-20 07:11:31,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:31,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:31,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:31,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-20 07:11:31,636 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1480476274, now seen corresponding path program 16 times [2021-11-20 07:11:31,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:31,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832351473] [2021-11-20 07:11:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:31,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:31,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:31,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832351473] [2021-11-20 07:11:31,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832351473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:31,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:31,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:31,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970152958] [2021-11-20 07:11:31,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:31,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:31,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:31,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:31,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:31,773 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:31,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 282 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:31,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:31,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:31,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:32,579 INFO L129 PetriNetUnfolder]: 344/1752 cut-off events. [2021-11-20 07:11:32,579 INFO L130 PetriNetUnfolder]: For 14443/14525 co-relation queries the response was YES. [2021-11-20 07:11:32,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7651 conditions, 1752 events. 344/1752 cut-off events. For 14443/14525 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13383 event pairs, 231 based on Foata normal form. 4/1682 useless extension candidates. Maximal degree in co-relation 7511. Up to 689 conditions per place. [2021-11-20 07:11:32,607 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 29 changer transitions 36/320 dead transitions. [2021-11-20 07:11:32,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 320 transitions, 3397 flow [2021-11-20 07:11:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:11:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:11:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2021-11-20 07:11:32,609 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2021-11-20 07:11:32,609 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2021-11-20 07:11:32,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2021-11-20 07:11:32,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:32,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2021-11-20 07:11:32,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:32,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:32,613 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:32,613 INFO L186 Difference]: Start difference. First operand has 404 places, 282 transitions, 2533 flow. Second operand 19 states and 2528 transitions. [2021-11-20 07:11:32,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 320 transitions, 3397 flow [2021-11-20 07:11:32,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 320 transitions, 3203 flow, removed 45 selfloop flow, removed 19 redundant places. [2021-11-20 07:11:32,694 INFO L242 Difference]: Finished difference. Result has 395 places, 271 transitions, 2261 flow [2021-11-20 07:11:32,695 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2261, PETRI_PLACES=395, PETRI_TRANSITIONS=271} [2021-11-20 07:11:32,695 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 238 predicate places. [2021-11-20 07:11:32,695 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 271 transitions, 2261 flow [2021-11-20 07:11:32,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:32,695 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:32,696 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] [2021-11-20 07:11:32,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-20 07:11:32,696 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash -857383524, now seen corresponding path program 17 times [2021-11-20 07:11:32,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:32,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852473117] [2021-11-20 07:11:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:32,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:32,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:32,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852473117] [2021-11-20 07:11:32,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852473117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:32,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:32,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:32,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094786223] [2021-11-20 07:11:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:32,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:32,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:32,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:32,835 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:32,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 271 transitions, 2261 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:32,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:32,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:32,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:33,529 INFO L129 PetriNetUnfolder]: 323/1654 cut-off events. [2021-11-20 07:11:33,529 INFO L130 PetriNetUnfolder]: For 12677/12749 co-relation queries the response was YES. [2021-11-20 07:11:33,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7127 conditions, 1654 events. 323/1654 cut-off events. For 12677/12749 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12570 event pairs, 209 based on Foata normal form. 4/1591 useless extension candidates. Maximal degree in co-relation 6994. Up to 672 conditions per place. [2021-11-20 07:11:33,548 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 19 changer transitions 36/302 dead transitions. [2021-11-20 07:11:33,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 302 transitions, 2946 flow [2021-11-20 07:11:33,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:33,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2657 transitions. [2021-11-20 07:11:33,550 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635057471264368 [2021-11-20 07:11:33,550 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2657 transitions. [2021-11-20 07:11:33,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2657 transitions. [2021-11-20 07:11:33,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:33,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2657 transitions. [2021-11-20 07:11:33,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.85) internal successors, (2657), 20 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:33,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:33,555 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:33,555 INFO L186 Difference]: Start difference. First operand has 395 places, 271 transitions, 2261 flow. Second operand 20 states and 2657 transitions. [2021-11-20 07:11:33,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 302 transitions, 2946 flow [2021-11-20 07:11:33,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 302 transitions, 2757 flow, removed 25 selfloop flow, removed 24 redundant places. [2021-11-20 07:11:33,620 INFO L242 Difference]: Finished difference. Result has 379 places, 253 transitions, 1891 flow [2021-11-20 07:11:33,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1891, PETRI_PLACES=379, PETRI_TRANSITIONS=253} [2021-11-20 07:11:33,621 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2021-11-20 07:11:33,621 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 253 transitions, 1891 flow [2021-11-20 07:11:33,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:33,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:33,622 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] [2021-11-20 07:11:33,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-20 07:11:33,622 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:33,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:33,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1334913694, now seen corresponding path program 18 times [2021-11-20 07:11:33,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:33,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848644586] [2021-11-20 07:11:33,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:33,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:33,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:33,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848644586] [2021-11-20 07:11:33,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848644586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:33,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:33,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:33,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300003804] [2021-11-20 07:11:33,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:33,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:33,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:33,748 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:33,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 253 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:33,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:33,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:33,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:34,396 INFO L129 PetriNetUnfolder]: 307/1604 cut-off events. [2021-11-20 07:11:34,397 INFO L130 PetriNetUnfolder]: For 11669/11741 co-relation queries the response was YES. [2021-11-20 07:11:34,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6674 conditions, 1604 events. 307/1604 cut-off events. For 11669/11741 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12037 event pairs, 201 based on Foata normal form. 4/1543 useless extension candidates. Maximal degree in co-relation 6548. Up to 651 conditions per place. [2021-11-20 07:11:34,432 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 6 changer transitions 37/278 dead transitions. [2021-11-20 07:11:34,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 278 transitions, 2422 flow [2021-11-20 07:11:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2644 transitions. [2021-11-20 07:11:34,436 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597701149425288 [2021-11-20 07:11:34,436 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2644 transitions. [2021-11-20 07:11:34,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2644 transitions. [2021-11-20 07:11:34,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:34,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2644 transitions. [2021-11-20 07:11:34,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.2) internal successors, (2644), 20 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:34,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:34,441 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:34,441 INFO L186 Difference]: Start difference. First operand has 379 places, 253 transitions, 1891 flow. Second operand 20 states and 2644 transitions. [2021-11-20 07:11:34,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 278 transitions, 2422 flow [2021-11-20 07:11:34,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 278 transitions, 2302 flow, removed 19 selfloop flow, removed 21 redundant places. [2021-11-20 07:11:34,499 INFO L242 Difference]: Finished difference. Result has 357 places, 228 transitions, 1466 flow [2021-11-20 07:11:34,499 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1466, PETRI_PLACES=357, PETRI_TRANSITIONS=228} [2021-11-20 07:11:34,499 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2021-11-20 07:11:34,500 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 228 transitions, 1466 flow [2021-11-20 07:11:34,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:34,500 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:34,500 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] [2021-11-20 07:11:34,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-20 07:11:34,501 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:34,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:34,501 INFO L85 PathProgramCache]: Analyzing trace with hash 269827806, now seen corresponding path program 19 times [2021-11-20 07:11:34,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:34,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159914145] [2021-11-20 07:11:34,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:34,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:34,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:34,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159914145] [2021-11-20 07:11:34,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159914145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:34,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:34,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:34,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757214229] [2021-11-20 07:11:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:34,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:34,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:34,618 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:34,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 228 transitions, 1466 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:34,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:34,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:34,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:35,406 INFO L129 PetriNetUnfolder]: 321/1641 cut-off events. [2021-11-20 07:11:35,406 INFO L130 PetriNetUnfolder]: For 11817/11885 co-relation queries the response was YES. [2021-11-20 07:11:35,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6870 conditions, 1641 events. 321/1641 cut-off events. For 11817/11885 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12355 event pairs, 185 based on Foata normal form. 2/1581 useless extension candidates. Maximal degree in co-relation 6752. Up to 596 conditions per place. [2021-11-20 07:11:35,429 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 30 changer transitions 38/321 dead transitions. [2021-11-20 07:11:35,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 321 transitions, 3122 flow [2021-11-20 07:11:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:11:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:11:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2021-11-20 07:11:35,431 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-11-20 07:11:35,431 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2021-11-20 07:11:35,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2021-11-20 07:11:35,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:35,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2021-11-20 07:11:35,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:35,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:35,438 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:35,438 INFO L186 Difference]: Start difference. First operand has 357 places, 228 transitions, 1466 flow. Second operand 28 states and 3703 transitions. [2021-11-20 07:11:35,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 321 transitions, 3122 flow [2021-11-20 07:11:35,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 321 transitions, 2944 flow, removed 38 selfloop flow, removed 20 redundant places. [2021-11-20 07:11:35,486 INFO L242 Difference]: Finished difference. Result has 346 places, 243 transitions, 1756 flow [2021-11-20 07:11:35,487 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1756, PETRI_PLACES=346, PETRI_TRANSITIONS=243} [2021-11-20 07:11:35,487 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2021-11-20 07:11:35,487 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 243 transitions, 1756 flow [2021-11-20 07:11:35,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:35,488 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:35,488 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] [2021-11-20 07:11:35,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-20 07:11:35,488 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:35,489 INFO L85 PathProgramCache]: Analyzing trace with hash 420148042, now seen corresponding path program 20 times [2021-11-20 07:11:35,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:35,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049083825] [2021-11-20 07:11:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:35,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:35,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:35,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049083825] [2021-11-20 07:11:35,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049083825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:35,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:35,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:35,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349345346] [2021-11-20 07:11:35,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:35,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:35,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:35,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:35,618 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:35,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 243 transitions, 1756 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:35,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:35,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:35,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:36,341 INFO L129 PetriNetUnfolder]: 322/1627 cut-off events. [2021-11-20 07:11:36,341 INFO L130 PetriNetUnfolder]: For 11106/11174 co-relation queries the response was YES. [2021-11-20 07:11:36,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6957 conditions, 1627 events. 322/1627 cut-off events. For 11106/11174 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12246 event pairs, 192 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 6836. Up to 603 conditions per place. [2021-11-20 07:11:36,362 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 34 changer transitions 35/315 dead transitions. [2021-11-20 07:11:36,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 315 transitions, 3237 flow [2021-11-20 07:11:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 07:11:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 07:11:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2021-11-20 07:11:36,365 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2021-11-20 07:11:36,365 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2021-11-20 07:11:36,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2021-11-20 07:11:36,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:36,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2021-11-20 07:11:36,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:36,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:36,370 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:36,370 INFO L186 Difference]: Start difference. First operand has 346 places, 243 transitions, 1756 flow. Second operand 26 states and 3446 transitions. [2021-11-20 07:11:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 315 transitions, 3237 flow [2021-11-20 07:11:36,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 315 transitions, 3052 flow, removed 73 selfloop flow, removed 15 redundant places. [2021-11-20 07:11:36,428 INFO L242 Difference]: Finished difference. Result has 359 places, 257 transitions, 2074 flow [2021-11-20 07:11:36,429 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2074, PETRI_PLACES=359, PETRI_TRANSITIONS=257} [2021-11-20 07:11:36,429 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 202 predicate places. [2021-11-20 07:11:36,429 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 257 transitions, 2074 flow [2021-11-20 07:11:36,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:36,430 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:36,430 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] [2021-11-20 07:11:36,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-20 07:11:36,431 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1323875930, now seen corresponding path program 21 times [2021-11-20 07:11:36,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:36,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606104047] [2021-11-20 07:11:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:36,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:36,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:36,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606104047] [2021-11-20 07:11:36,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606104047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:36,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:36,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:36,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822720020] [2021-11-20 07:11:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:36,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:36,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:36,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:36,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 257 transitions, 2074 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:36,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:36,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:36,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:37,360 INFO L129 PetriNetUnfolder]: 318/1621 cut-off events. [2021-11-20 07:11:37,361 INFO L130 PetriNetUnfolder]: For 12748/12816 co-relation queries the response was YES. [2021-11-20 07:11:37,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7154 conditions, 1621 events. 318/1621 cut-off events. For 12748/12816 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12130 event pairs, 190 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 7026. Up to 601 conditions per place. [2021-11-20 07:11:37,383 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 36 changer transitions 39/325 dead transitions. [2021-11-20 07:11:37,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 325 transitions, 3501 flow [2021-11-20 07:11:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 07:11:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-20 07:11:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2021-11-20 07:11:37,386 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2021-11-20 07:11:37,386 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2021-11-20 07:11:37,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2021-11-20 07:11:37,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:37,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2021-11-20 07:11:37,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:37,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:37,391 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:37,391 INFO L186 Difference]: Start difference. First operand has 359 places, 257 transitions, 2074 flow. Second operand 27 states and 3575 transitions. [2021-11-20 07:11:37,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 325 transitions, 3501 flow [2021-11-20 07:11:37,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 325 transitions, 3245 flow, removed 108 selfloop flow, removed 16 redundant places. [2021-11-20 07:11:37,464 INFO L242 Difference]: Finished difference. Result has 372 places, 260 transitions, 2142 flow [2021-11-20 07:11:37,464 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2142, PETRI_PLACES=372, PETRI_TRANSITIONS=260} [2021-11-20 07:11:37,464 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2021-11-20 07:11:37,464 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 260 transitions, 2142 flow [2021-11-20 07:11:37,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:37,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:37,465 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] [2021-11-20 07:11:37,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-20 07:11:37,465 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash 635665822, now seen corresponding path program 22 times [2021-11-20 07:11:37,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:37,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374854490] [2021-11-20 07:11:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:37,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:37,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:37,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374854490] [2021-11-20 07:11:37,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374854490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:37,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:37,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:37,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188516835] [2021-11-20 07:11:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:37,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:37,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:37,581 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:37,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 260 transitions, 2142 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:37,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:37,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:37,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:38,185 INFO L129 PetriNetUnfolder]: 311/1595 cut-off events. [2021-11-20 07:11:38,185 INFO L130 PetriNetUnfolder]: For 12295/12363 co-relation queries the response was YES. [2021-11-20 07:11:38,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 1595 events. 311/1595 cut-off events. For 12295/12363 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11951 event pairs, 181 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 6850. Up to 603 conditions per place. [2021-11-20 07:11:38,205 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 39 changer transitions 31/325 dead transitions. [2021-11-20 07:11:38,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 325 transitions, 3439 flow [2021-11-20 07:11:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:11:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:11:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2021-11-20 07:11:38,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2021-11-20 07:11:38,207 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2021-11-20 07:11:38,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2021-11-20 07:11:38,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:38,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2021-11-20 07:11:38,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 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) [2021-11-20 07:11:38,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:38,211 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:38,212 INFO L186 Difference]: Start difference. First operand has 372 places, 260 transitions, 2142 flow. Second operand 22 states and 2920 transitions. [2021-11-20 07:11:38,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 325 transitions, 3439 flow [2021-11-20 07:11:38,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 325 transitions, 3189 flow, removed 87 selfloop flow, removed 19 redundant places. [2021-11-20 07:11:38,279 INFO L242 Difference]: Finished difference. Result has 368 places, 267 transitions, 2238 flow [2021-11-20 07:11:38,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2238, PETRI_PLACES=368, PETRI_TRANSITIONS=267} [2021-11-20 07:11:38,280 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2021-11-20 07:11:38,280 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 267 transitions, 2238 flow [2021-11-20 07:11:38,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:38,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:38,281 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] [2021-11-20 07:11:38,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-20 07:11:38,281 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:38,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:38,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1971432700, now seen corresponding path program 23 times [2021-11-20 07:11:38,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:38,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801557784] [2021-11-20 07:11:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:38,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:38,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:38,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801557784] [2021-11-20 07:11:38,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801557784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:38,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:38,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:38,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697954254] [2021-11-20 07:11:38,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:38,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:38,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:38,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:38,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:38,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:38,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 267 transitions, 2238 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:38,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:38,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:38,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:38,971 INFO L129 PetriNetUnfolder]: 315/1605 cut-off events. [2021-11-20 07:11:38,971 INFO L130 PetriNetUnfolder]: For 11332/11400 co-relation queries the response was YES. [2021-11-20 07:11:38,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 1605 events. 315/1605 cut-off events. For 11332/11400 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12024 event pairs, 188 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 6893. Up to 605 conditions per place. [2021-11-20 07:11:38,993 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 46 changer transitions 30/325 dead transitions. [2021-11-20 07:11:38,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 325 transitions, 3441 flow [2021-11-20 07:11:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:11:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 07:11:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2021-11-20 07:11:38,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2021-11-20 07:11:38,995 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2021-11-20 07:11:38,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2021-11-20 07:11:38,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:38,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2021-11-20 07:11:38,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:38,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:38,999 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:38,999 INFO L186 Difference]: Start difference. First operand has 368 places, 267 transitions, 2238 flow. Second operand 21 states and 2792 transitions. [2021-11-20 07:11:39,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 325 transitions, 3441 flow [2021-11-20 07:11:39,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 325 transitions, 3330 flow, removed 40 selfloop flow, removed 7 redundant places. [2021-11-20 07:11:39,073 INFO L242 Difference]: Finished difference. Result has 382 places, 277 transitions, 2486 flow [2021-11-20 07:11:39,074 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2486, PETRI_PLACES=382, PETRI_TRANSITIONS=277} [2021-11-20 07:11:39,074 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 225 predicate places. [2021-11-20 07:11:39,074 INFO L470 AbstractCegarLoop]: Abstraction has has 382 places, 277 transitions, 2486 flow [2021-11-20 07:11:39,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:39,075 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:39,075 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] [2021-11-20 07:11:39,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-20 07:11:39,075 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:39,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:39,075 INFO L85 PathProgramCache]: Analyzing trace with hash 119031390, now seen corresponding path program 24 times [2021-11-20 07:11:39,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:39,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857115770] [2021-11-20 07:11:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:39,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:39,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:39,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857115770] [2021-11-20 07:11:39,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857115770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:39,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:39,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:39,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338876128] [2021-11-20 07:11:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:39,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:39,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:39,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:39,192 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:39,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 277 transitions, 2486 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:39,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:39,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:39,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:39,881 INFO L129 PetriNetUnfolder]: 311/1604 cut-off events. [2021-11-20 07:11:39,881 INFO L130 PetriNetUnfolder]: For 11546/11614 co-relation queries the response was YES. [2021-11-20 07:11:39,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7081 conditions, 1604 events. 311/1604 cut-off events. For 11546/11614 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12001 event pairs, 187 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 6947. Up to 603 conditions per place. [2021-11-20 07:11:39,919 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 41 changer transitions 31/329 dead transitions. [2021-11-20 07:11:39,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 329 transitions, 3666 flow [2021-11-20 07:11:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:11:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:11:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2021-11-20 07:11:39,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2021-11-20 07:11:39,923 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2021-11-20 07:11:39,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2021-11-20 07:11:39,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:39,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2021-11-20 07:11:39,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:39,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:39,931 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:39,931 INFO L186 Difference]: Start difference. First operand has 382 places, 277 transitions, 2486 flow. Second operand 22 states and 2923 transitions. [2021-11-20 07:11:39,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 329 transitions, 3666 flow [2021-11-20 07:11:40,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 329 transitions, 3515 flow, removed 46 selfloop flow, removed 9 redundant places. [2021-11-20 07:11:40,054 INFO L242 Difference]: Finished difference. Result has 395 places, 281 transitions, 2595 flow [2021-11-20 07:11:40,055 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2595, PETRI_PLACES=395, PETRI_TRANSITIONS=281} [2021-11-20 07:11:40,055 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 238 predicate places. [2021-11-20 07:11:40,056 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 281 transitions, 2595 flow [2021-11-20 07:11:40,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:40,056 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:40,056 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] [2021-11-20 07:11:40,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-20 07:11:40,057 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:40,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash -859212732, now seen corresponding path program 25 times [2021-11-20 07:11:40,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:40,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982953135] [2021-11-20 07:11:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:40,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:40,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:40,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982953135] [2021-11-20 07:11:40,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982953135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:40,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:40,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:40,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985623050] [2021-11-20 07:11:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:40,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:40,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:40,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:40,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 281 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:40,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:40,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:40,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:40,845 INFO L129 PetriNetUnfolder]: 317/1617 cut-off events. [2021-11-20 07:11:40,845 INFO L130 PetriNetUnfolder]: For 12229/12297 co-relation queries the response was YES. [2021-11-20 07:11:40,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7317 conditions, 1617 events. 317/1617 cut-off events. For 12229/12297 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12174 event pairs, 189 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 7178. Up to 605 conditions per place. [2021-11-20 07:11:40,869 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 56 changer transitions 28/333 dead transitions. [2021-11-20 07:11:40,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 333 transitions, 3854 flow [2021-11-20 07:11:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-11-20 07:11:40,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-11-20 07:11:40,871 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-11-20 07:11:40,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-11-20 07:11:40,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:40,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-11-20 07:11:40,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:40,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:40,875 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:40,875 INFO L186 Difference]: Start difference. First operand has 395 places, 281 transitions, 2595 flow. Second operand 20 states and 2663 transitions. [2021-11-20 07:11:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 333 transitions, 3854 flow [2021-11-20 07:11:40,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 333 transitions, 3703 flow, removed 58 selfloop flow, removed 7 redundant places. [2021-11-20 07:11:40,965 INFO L242 Difference]: Finished difference. Result has 409 places, 293 transitions, 2931 flow [2021-11-20 07:11:40,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2931, PETRI_PLACES=409, PETRI_TRANSITIONS=293} [2021-11-20 07:11:40,966 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 252 predicate places. [2021-11-20 07:11:40,966 INFO L470 AbstractCegarLoop]: Abstraction has has 409 places, 293 transitions, 2931 flow [2021-11-20 07:11:40,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:40,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:40,966 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] [2021-11-20 07:11:40,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-20 07:11:40,966 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:40,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:40,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1983641528, now seen corresponding path program 26 times [2021-11-20 07:11:40,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:40,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411274701] [2021-11-20 07:11:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:40,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:41,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:41,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411274701] [2021-11-20 07:11:41,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411274701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:41,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:41,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:41,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749388416] [2021-11-20 07:11:41,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:41,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:41,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:41,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:41,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 293 transitions, 2931 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:41,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:41,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:41,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:41,795 INFO L129 PetriNetUnfolder]: 321/1638 cut-off events. [2021-11-20 07:11:41,795 INFO L130 PetriNetUnfolder]: For 13401/13469 co-relation queries the response was YES. [2021-11-20 07:11:41,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7615 conditions, 1638 events. 321/1638 cut-off events. For 13401/13469 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12394 event pairs, 185 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 7468. Up to 607 conditions per place. [2021-11-20 07:11:41,824 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 46 changer transitions 28/343 dead transitions. [2021-11-20 07:11:41,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 343 transitions, 4256 flow [2021-11-20 07:11:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:11:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 07:11:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2021-11-20 07:11:41,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2021-11-20 07:11:41,826 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2021-11-20 07:11:41,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2021-11-20 07:11:41,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:41,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2021-11-20 07:11:41,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 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) [2021-11-20 07:11:41,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:41,837 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:41,837 INFO L186 Difference]: Start difference. First operand has 409 places, 293 transitions, 2931 flow. Second operand 22 states and 2924 transitions. [2021-11-20 07:11:41,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 343 transitions, 4256 flow [2021-11-20 07:11:41,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 343 transitions, 4020 flow, removed 70 selfloop flow, removed 9 redundant places. [2021-11-20 07:11:41,957 INFO L242 Difference]: Finished difference. Result has 422 places, 305 transitions, 3167 flow [2021-11-20 07:11:41,958 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3167, PETRI_PLACES=422, PETRI_TRANSITIONS=305} [2021-11-20 07:11:41,958 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 265 predicate places. [2021-11-20 07:11:41,958 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 305 transitions, 3167 flow [2021-11-20 07:11:41,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:41,958 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:41,959 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] [2021-11-20 07:11:41,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-20 07:11:41,959 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:41,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash 179737798, now seen corresponding path program 27 times [2021-11-20 07:11:41,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:41,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238549760] [2021-11-20 07:11:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:41,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:42,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:42,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238549760] [2021-11-20 07:11:42,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238549760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:42,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:42,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:42,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187249945] [2021-11-20 07:11:42,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:42,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:42,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:42,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:42,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 305 transitions, 3167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:42,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:42,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:42,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:42,850 INFO L129 PetriNetUnfolder]: 316/1633 cut-off events. [2021-11-20 07:11:42,850 INFO L130 PetriNetUnfolder]: For 13219/13287 co-relation queries the response was YES. [2021-11-20 07:11:42,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7564 conditions, 1633 events. 316/1633 cut-off events. For 13219/13287 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12344 event pairs, 186 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 7413. Up to 605 conditions per place. [2021-11-20 07:11:42,880 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 126 selfloop transitions, 48 changer transitions 30/350 dead transitions. [2021-11-20 07:11:42,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 350 transitions, 4435 flow [2021-11-20 07:11:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:11:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 07:11:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2021-11-20 07:11:42,883 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2021-11-20 07:11:42,883 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2021-11-20 07:11:42,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2021-11-20 07:11:42,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:42,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2021-11-20 07:11:42,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:42,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:42,888 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:42,888 INFO L186 Difference]: Start difference. First operand has 422 places, 305 transitions, 3167 flow. Second operand 21 states and 2797 transitions. [2021-11-20 07:11:42,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 350 transitions, 4435 flow [2021-11-20 07:11:43,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 350 transitions, 4164 flow, removed 116 selfloop flow, removed 6 redundant places. [2021-11-20 07:11:43,019 INFO L242 Difference]: Finished difference. Result has 437 places, 312 transitions, 3294 flow [2021-11-20 07:11:43,019 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3294, PETRI_PLACES=437, PETRI_TRANSITIONS=312} [2021-11-20 07:11:43,019 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 280 predicate places. [2021-11-20 07:11:43,020 INFO L470 AbstractCegarLoop]: Abstraction has has 437 places, 312 transitions, 3294 flow [2021-11-20 07:11:43,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:43,020 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:43,020 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] [2021-11-20 07:11:43,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-20 07:11:43,020 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1299077900, now seen corresponding path program 28 times [2021-11-20 07:11:43,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:43,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96291927] [2021-11-20 07:11:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:43,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:43,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:43,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96291927] [2021-11-20 07:11:43,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96291927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:43,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:43,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:43,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523492918] [2021-11-20 07:11:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:43,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:43,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:43,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:43,152 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:43,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 312 transitions, 3294 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:43,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:43,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:43,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:43,966 INFO L129 PetriNetUnfolder]: 308/1622 cut-off events. [2021-11-20 07:11:43,966 INFO L130 PetriNetUnfolder]: For 12711/12779 co-relation queries the response was YES. [2021-11-20 07:11:43,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7341 conditions, 1622 events. 308/1622 cut-off events. For 12711/12779 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12237 event pairs, 177 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 7182. Up to 602 conditions per place. [2021-11-20 07:11:43,997 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 129 selfloop transitions, 36 changer transitions 40/351 dead transitions. [2021-11-20 07:11:43,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 351 transitions, 4167 flow [2021-11-20 07:11:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:11:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 07:11:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2021-11-20 07:11:43,999 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2021-11-20 07:11:43,999 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2021-11-20 07:11:44,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2021-11-20 07:11:44,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:44,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2021-11-20 07:11:44,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:44,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:44,004 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:44,004 INFO L186 Difference]: Start difference. First operand has 437 places, 312 transitions, 3294 flow. Second operand 18 states and 2400 transitions. [2021-11-20 07:11:44,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 351 transitions, 4167 flow [2021-11-20 07:11:44,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 351 transitions, 4039 flow, removed 43 selfloop flow, removed 10 redundant places. [2021-11-20 07:11:44,193 INFO L242 Difference]: Finished difference. Result has 439 places, 292 transitions, 2869 flow [2021-11-20 07:11:44,194 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2869, PETRI_PLACES=439, PETRI_TRANSITIONS=292} [2021-11-20 07:11:44,194 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 282 predicate places. [2021-11-20 07:11:44,195 INFO L470 AbstractCegarLoop]: Abstraction has has 439 places, 292 transitions, 2869 flow [2021-11-20 07:11:44,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:44,195 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:44,196 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] [2021-11-20 07:11:44,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-20 07:11:44,196 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1930430014, now seen corresponding path program 29 times [2021-11-20 07:11:44,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:44,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838941990] [2021-11-20 07:11:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:44,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:44,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:44,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838941990] [2021-11-20 07:11:44,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838941990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:44,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:44,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:44,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597715345] [2021-11-20 07:11:44,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:44,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:44,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:44,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:44,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:44,314 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:44,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 292 transitions, 2869 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:44,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:44,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:44,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:45,074 INFO L129 PetriNetUnfolder]: 303/1601 cut-off events. [2021-11-20 07:11:45,074 INFO L130 PetriNetUnfolder]: For 12344/12412 co-relation queries the response was YES. [2021-11-20 07:11:45,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 1601 events. 303/1601 cut-off events. For 12344/12412 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12084 event pairs, 182 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 7020. Up to 600 conditions per place. [2021-11-20 07:11:45,099 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 27 changer transitions 38/331 dead transitions. [2021-11-20 07:11:45,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 331 transitions, 3764 flow [2021-11-20 07:11:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:11:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:11:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2531 transitions. [2021-11-20 07:11:45,101 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655777374470659 [2021-11-20 07:11:45,102 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2531 transitions. [2021-11-20 07:11:45,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2531 transitions. [2021-11-20 07:11:45,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:45,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2531 transitions. [2021-11-20 07:11:45,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.21052631578948) internal successors, (2531), 19 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:45,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:45,107 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:45,107 INFO L186 Difference]: Start difference. First operand has 439 places, 292 transitions, 2869 flow. Second operand 19 states and 2531 transitions. [2021-11-20 07:11:45,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 331 transitions, 3764 flow [2021-11-20 07:11:45,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 331 transitions, 3487 flow, removed 30 selfloop flow, removed 23 redundant places. [2021-11-20 07:11:45,198 INFO L242 Difference]: Finished difference. Result has 417 places, 281 transitions, 2518 flow [2021-11-20 07:11:45,199 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2518, PETRI_PLACES=417, PETRI_TRANSITIONS=281} [2021-11-20 07:11:45,199 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 260 predicate places. [2021-11-20 07:11:45,199 INFO L470 AbstractCegarLoop]: Abstraction has has 417 places, 281 transitions, 2518 flow [2021-11-20 07:11:45,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:45,200 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:45,200 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] [2021-11-20 07:11:45,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-20 07:11:45,200 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1935271108, now seen corresponding path program 30 times [2021-11-20 07:11:45,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:45,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124299720] [2021-11-20 07:11:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:45,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:45,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:45,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124299720] [2021-11-20 07:11:45,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124299720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:45,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:45,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:45,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288867702] [2021-11-20 07:11:45,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:45,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:45,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:45,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:45,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 281 transitions, 2518 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:45,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:45,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:45,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:46,005 INFO L129 PetriNetUnfolder]: 288/1541 cut-off events. [2021-11-20 07:11:46,005 INFO L130 PetriNetUnfolder]: For 10335/10403 co-relation queries the response was YES. [2021-11-20 07:11:46,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6492 conditions, 1541 events. 288/1541 cut-off events. For 10335/10403 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11511 event pairs, 181 based on Foata normal form. 2/1478 useless extension candidates. Maximal degree in co-relation 6343. Up to 596 conditions per place. [2021-11-20 07:11:46,033 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 15 changer transitions 39/309 dead transitions. [2021-11-20 07:11:46,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 309 transitions, 3139 flow [2021-11-20 07:11:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2021-11-20 07:11:46,035 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2021-11-20 07:11:46,035 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2021-11-20 07:11:46,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2021-11-20 07:11:46,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:46,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2021-11-20 07:11:46,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:46,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:46,040 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:46,040 INFO L186 Difference]: Start difference. First operand has 417 places, 281 transitions, 2518 flow. Second operand 20 states and 2651 transitions. [2021-11-20 07:11:46,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 309 transitions, 3139 flow [2021-11-20 07:11:46,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 309 transitions, 2988 flow, removed 21 selfloop flow, removed 23 redundant places. [2021-11-20 07:11:46,128 INFO L242 Difference]: Finished difference. Result has 400 places, 258 transitions, 2065 flow [2021-11-20 07:11:46,128 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2065, PETRI_PLACES=400, PETRI_TRANSITIONS=258} [2021-11-20 07:11:46,129 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 243 predicate places. [2021-11-20 07:11:46,129 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 258 transitions, 2065 flow [2021-11-20 07:11:46,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:46,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:46,130 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] [2021-11-20 07:11:46,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-20 07:11:46,130 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash 199133720, now seen corresponding path program 31 times [2021-11-20 07:11:46,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:46,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088282341] [2021-11-20 07:11:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:46,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:46,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:46,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088282341] [2021-11-20 07:11:46,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088282341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:46,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:46,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:46,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700410840] [2021-11-20 07:11:46,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:46,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:46,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:46,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:46,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 258 transitions, 2065 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:46,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:46,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:46,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:47,256 INFO L129 PetriNetUnfolder]: 299/1582 cut-off events. [2021-11-20 07:11:47,256 INFO L130 PetriNetUnfolder]: For 10589/10657 co-relation queries the response was YES. [2021-11-20 07:11:47,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 1582 events. 299/1582 cut-off events. For 10589/10657 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11904 event pairs, 182 based on Foata normal form. 2/1516 useless extension candidates. Maximal degree in co-relation 6485. Up to 596 conditions per place. [2021-11-20 07:11:47,278 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 33 changer transitions 43/317 dead transitions. [2021-11-20 07:11:47,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 317 transitions, 3286 flow [2021-11-20 07:11:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 07:11:47,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-20 07:11:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2021-11-20 07:11:47,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2021-11-20 07:11:47,280 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2021-11-20 07:11:47,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2021-11-20 07:11:47,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:47,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2021-11-20 07:11:47,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:47,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:47,285 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:47,286 INFO L186 Difference]: Start difference. First operand has 400 places, 258 transitions, 2065 flow. Second operand 23 states and 3057 transitions. [2021-11-20 07:11:47,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 317 transitions, 3286 flow [2021-11-20 07:11:47,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 317 transitions, 3078 flow, removed 25 selfloop flow, removed 20 redundant places. [2021-11-20 07:11:47,357 INFO L242 Difference]: Finished difference. Result has 384 places, 263 transitions, 2166 flow [2021-11-20 07:11:47,357 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2166, PETRI_PLACES=384, PETRI_TRANSITIONS=263} [2021-11-20 07:11:47,358 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 227 predicate places. [2021-11-20 07:11:47,358 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 263 transitions, 2166 flow [2021-11-20 07:11:47,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:47,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:47,359 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] [2021-11-20 07:11:47,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-20 07:11:47,359 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1645216888, now seen corresponding path program 32 times [2021-11-20 07:11:47,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:47,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978416743] [2021-11-20 07:11:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:47,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:47,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:47,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978416743] [2021-11-20 07:11:47,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978416743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:47,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:47,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:47,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769103438] [2021-11-20 07:11:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:47,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:47,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:47,478 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:47,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 263 transitions, 2166 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:47,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:47,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:47,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:48,172 INFO L129 PetriNetUnfolder]: 294/1581 cut-off events. [2021-11-20 07:11:48,172 INFO L130 PetriNetUnfolder]: For 9875/9943 co-relation queries the response was YES. [2021-11-20 07:11:48,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 1581 events. 294/1581 cut-off events. For 9875/9943 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11869 event pairs, 176 based on Foata normal form. 2/1516 useless extension candidates. Maximal degree in co-relation 6248. Up to 596 conditions per place. [2021-11-20 07:11:48,200 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 35 changer transitions 41/314 dead transitions. [2021-11-20 07:11:48,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 314 transitions, 3193 flow [2021-11-20 07:11:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:11:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 07:11:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2021-11-20 07:11:48,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2021-11-20 07:11:48,202 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2021-11-20 07:11:48,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2021-11-20 07:11:48,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:48,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2021-11-20 07:11:48,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:48,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:48,208 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:48,208 INFO L186 Difference]: Start difference. First operand has 384 places, 263 transitions, 2166 flow. Second operand 24 states and 3188 transitions. [2021-11-20 07:11:48,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 314 transitions, 3193 flow [2021-11-20 07:11:48,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 314 transitions, 3042 flow, removed 39 selfloop flow, removed 16 redundant places. [2021-11-20 07:11:48,294 INFO L242 Difference]: Finished difference. Result has 390 places, 262 transitions, 2167 flow [2021-11-20 07:11:48,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2167, PETRI_PLACES=390, PETRI_TRANSITIONS=262} [2021-11-20 07:11:48,295 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 233 predicate places. [2021-11-20 07:11:48,296 INFO L470 AbstractCegarLoop]: Abstraction has has 390 places, 262 transitions, 2167 flow [2021-11-20 07:11:48,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:48,296 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:48,296 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] [2021-11-20 07:11:48,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-20 07:11:48,297 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1414534646, now seen corresponding path program 33 times [2021-11-20 07:11:48,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:48,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851955302] [2021-11-20 07:11:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:48,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:48,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:48,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851955302] [2021-11-20 07:11:48,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851955302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:48,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:48,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:48,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017624818] [2021-11-20 07:11:48,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:48,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:48,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:48,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:48,426 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:48,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 262 transitions, 2167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:48,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:48,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:48,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:49,050 INFO L129 PetriNetUnfolder]: 285/1537 cut-off events. [2021-11-20 07:11:49,051 INFO L130 PetriNetUnfolder]: For 9313/9381 co-relation queries the response was YES. [2021-11-20 07:11:49,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6180 conditions, 1537 events. 285/1537 cut-off events. For 9313/9381 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11509 event pairs, 182 based on Foata normal form. 2/1469 useless extension candidates. Maximal degree in co-relation 6040. Up to 594 conditions per place. [2021-11-20 07:11:49,077 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 25 changer transitions 37/294 dead transitions. [2021-11-20 07:11:49,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 294 transitions, 2867 flow [2021-11-20 07:11:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:11:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:11:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2021-11-20 07:11:49,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2021-11-20 07:11:49,079 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2021-11-20 07:11:49,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2021-11-20 07:11:49,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:49,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2021-11-20 07:11:49,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:49,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:49,084 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-11-20 07:11:49,084 INFO L186 Difference]: Start difference. First operand has 390 places, 262 transitions, 2167 flow. Second operand 19 states and 2529 transitions. [2021-11-20 07:11:49,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 294 transitions, 2867 flow [2021-11-20 07:11:49,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 294 transitions, 2707 flow, removed 39 selfloop flow, removed 18 redundant places. [2021-11-20 07:11:49,153 INFO L242 Difference]: Finished difference. Result has 382 places, 251 transitions, 1916 flow [2021-11-20 07:11:49,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1916, PETRI_PLACES=382, PETRI_TRANSITIONS=251} [2021-11-20 07:11:49,154 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 225 predicate places. [2021-11-20 07:11:49,154 INFO L470 AbstractCegarLoop]: Abstraction has has 382 places, 251 transitions, 1916 flow [2021-11-20 07:11:49,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:49,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:49,155 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] [2021-11-20 07:11:49,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-20 07:11:49,156 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash -607432702, now seen corresponding path program 34 times [2021-11-20 07:11:49,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:49,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447294802] [2021-11-20 07:11:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:49,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:49,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:49,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447294802] [2021-11-20 07:11:49,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447294802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:49,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:49,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:49,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574377899] [2021-11-20 07:11:49,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:49,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:49,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:49,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:49,301 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:49,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 251 transitions, 1916 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:49,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:49,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:49,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:50,014 INFO L129 PetriNetUnfolder]: 271/1487 cut-off events. [2021-11-20 07:11:50,015 INFO L130 PetriNetUnfolder]: For 8304/8372 co-relation queries the response was YES. [2021-11-20 07:11:50,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5769 conditions, 1487 events. 271/1487 cut-off events. For 8304/8372 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10995 event pairs, 177 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 5636. Up to 592 conditions per place. [2021-11-20 07:11:50,040 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 80 selfloop transitions, 13 changer transitions 37/276 dead transitions. [2021-11-20 07:11:50,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 276 transitions, 2448 flow [2021-11-20 07:11:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2021-11-20 07:11:50,042 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2021-11-20 07:11:50,042 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2021-11-20 07:11:50,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2021-11-20 07:11:50,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:50,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2021-11-20 07:11:50,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,047 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,047 INFO L186 Difference]: Start difference. First operand has 382 places, 251 transitions, 1916 flow. Second operand 20 states and 2656 transitions. [2021-11-20 07:11:50,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 276 transitions, 2448 flow [2021-11-20 07:11:50,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 276 transitions, 2278 flow, removed 26 selfloop flow, removed 23 redundant places. [2021-11-20 07:11:50,109 INFO L242 Difference]: Finished difference. Result has 367 places, 233 transitions, 1546 flow [2021-11-20 07:11:50,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1546, PETRI_PLACES=367, PETRI_TRANSITIONS=233} [2021-11-20 07:11:50,109 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 210 predicate places. [2021-11-20 07:11:50,109 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 233 transitions, 1546 flow [2021-11-20 07:11:50,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:50,110 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] [2021-11-20 07:11:50,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-20 07:11:50,110 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:50,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1082875022, now seen corresponding path program 35 times [2021-11-20 07:11:50,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:50,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943749327] [2021-11-20 07:11:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:50,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:50,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:50,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943749327] [2021-11-20 07:11:50,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943749327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:50,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:50,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:11:50,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576898217] [2021-11-20 07:11:50,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:50,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:11:50,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:11:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:11:50,244 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-11-20 07:11:50,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 233 transitions, 1546 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:50,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-11-20 07:11:50,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:50,867 INFO L129 PetriNetUnfolder]: 256/1406 cut-off events. [2021-11-20 07:11:50,867 INFO L130 PetriNetUnfolder]: For 7505/7573 co-relation queries the response was YES. [2021-11-20 07:11:50,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5283 conditions, 1406 events. 256/1406 cut-off events. For 7505/7573 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10232 event pairs, 172 based on Foata normal form. 2/1342 useless extension candidates. Maximal degree in co-relation 5157. Up to 571 conditions per place. [2021-11-20 07:11:50,889 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 66 selfloop transitions, 2 changer transitions 40/252 dead transitions. [2021-11-20 07:11:50,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 252 transitions, 1923 flow [2021-11-20 07:11:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:11:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 07:11:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2021-11-20 07:11:50,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-11-20 07:11:50,891 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2021-11-20 07:11:50,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2021-11-20 07:11:50,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:50,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2021-11-20 07:11:50,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,896 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,896 INFO L186 Difference]: Start difference. First operand has 367 places, 233 transitions, 1546 flow. Second operand 20 states and 2645 transitions. [2021-11-20 07:11:50,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 252 transitions, 1923 flow [2021-11-20 07:11:50,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 252 transitions, 1834 flow, removed 16 selfloop flow, removed 21 redundant places. [2021-11-20 07:11:50,943 INFO L242 Difference]: Finished difference. Result has 345 places, 206 transitions, 1141 flow [2021-11-20 07:11:50,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1141, PETRI_PLACES=345, PETRI_TRANSITIONS=206} [2021-11-20 07:11:50,944 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2021-11-20 07:11:50,944 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 206 transitions, 1141 flow [2021-11-20 07:11:50,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:50,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:50,944 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] [2021-11-20 07:11:50,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-20 07:11:50,945 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:50,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:50,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1031458755, now seen corresponding path program 1 times [2021-11-20 07:11:50,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:50,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784904387] [2021-11-20 07:11:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:50,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:51,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:51,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784904387] [2021-11-20 07:11:51,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784904387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 07:11:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775816694] [2021-11-20 07:11:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:51,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:11:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:11:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:11:51,292 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-11-20 07:11:51,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 206 transitions, 1141 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:51,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:51,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-11-20 07:11:51,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:53,354 INFO L129 PetriNetUnfolder]: 769/3127 cut-off events. [2021-11-20 07:11:53,355 INFO L130 PetriNetUnfolder]: For 14031/14065 co-relation queries the response was YES. [2021-11-20 07:11:53,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10241 conditions, 3127 events. 769/3127 cut-off events. For 14031/14065 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 25923 event pairs, 277 based on Foata normal form. 27/3036 useless extension candidates. Maximal degree in co-relation 10123. Up to 518 conditions per place. [2021-11-20 07:11:53,397 INFO L132 encePairwiseOnDemand]: 147/174 looper letters, 257 selfloop transitions, 35 changer transitions 60/439 dead transitions. [2021-11-20 07:11:53,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 439 transitions, 3413 flow [2021-11-20 07:11:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:11:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:11:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3042 transitions. [2021-11-20 07:11:53,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.624384236453202 [2021-11-20 07:11:53,400 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3042 transitions. [2021-11-20 07:11:53,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3042 transitions. [2021-11-20 07:11:53,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:53,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3042 transitions. [2021-11-20 07:11:53,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.64285714285714) internal successors, (3042), 28 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:53,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:53,407 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:53,407 INFO L186 Difference]: Start difference. First operand has 345 places, 206 transitions, 1141 flow. Second operand 28 states and 3042 transitions. [2021-11-20 07:11:53,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 439 transitions, 3413 flow [2021-11-20 07:11:53,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 439 transitions, 3223 flow, removed 73 selfloop flow, removed 28 redundant places. [2021-11-20 07:11:53,461 INFO L242 Difference]: Finished difference. Result has 331 places, 214 transitions, 1298 flow [2021-11-20 07:11:53,462 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1298, PETRI_PLACES=331, PETRI_TRANSITIONS=214} [2021-11-20 07:11:53,462 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2021-11-20 07:11:53,463 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 214 transitions, 1298 flow [2021-11-20 07:11:53,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:53,463 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:53,464 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] [2021-11-20 07:11:53,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-20 07:11:53,464 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash -787125553, now seen corresponding path program 2 times [2021-11-20 07:11:53,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:53,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338705809] [2021-11-20 07:11:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:53,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:53,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:53,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338705809] [2021-11-20 07:11:53,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338705809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:53,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:53,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 07:11:53,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444935138] [2021-11-20 07:11:53,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:53,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:11:53,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:11:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:11:53,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-11-20 07:11:53,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 214 transitions, 1298 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:53,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:53,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-11-20 07:11:53,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:56,522 INFO L129 PetriNetUnfolder]: 757/2978 cut-off events. [2021-11-20 07:11:56,522 INFO L130 PetriNetUnfolder]: For 19506/19535 co-relation queries the response was YES. [2021-11-20 07:11:56,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11463 conditions, 2978 events. 757/2978 cut-off events. For 19506/19535 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 24383 event pairs, 365 based on Foata normal form. 23/2898 useless extension candidates. Maximal degree in co-relation 11345. Up to 733 conditions per place. [2021-11-20 07:11:56,570 INFO L132 encePairwiseOnDemand]: 149/174 looper letters, 248 selfloop transitions, 23 changer transitions 90/448 dead transitions. [2021-11-20 07:11:56,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 448 transitions, 3623 flow [2021-11-20 07:11:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:11:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:11:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4029 transitions. [2021-11-20 07:11:56,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6093466424682396 [2021-11-20 07:11:56,574 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4029 transitions. [2021-11-20 07:11:56,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4029 transitions. [2021-11-20 07:11:56,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:56,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4029 transitions. [2021-11-20 07:11:56,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 106.02631578947368) internal successors, (4029), 38 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:56,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:56,582 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:56,582 INFO L186 Difference]: Start difference. First operand has 331 places, 214 transitions, 1298 flow. Second operand 38 states and 4029 transitions. [2021-11-20 07:11:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 448 transitions, 3623 flow [2021-11-20 07:11:56,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 448 transitions, 3264 flow, removed 155 selfloop flow, removed 27 redundant places. [2021-11-20 07:11:56,676 INFO L242 Difference]: Finished difference. Result has 346 places, 216 transitions, 1357 flow [2021-11-20 07:11:56,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1357, PETRI_PLACES=346, PETRI_TRANSITIONS=216} [2021-11-20 07:11:56,677 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2021-11-20 07:11:56,677 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 216 transitions, 1357 flow [2021-11-20 07:11:56,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:56,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:56,678 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] [2021-11-20 07:11:56,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-20 07:11:56,678 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1849170163, now seen corresponding path program 3 times [2021-11-20 07:11:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:56,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833096630] [2021-11-20 07:11:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:56,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:57,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:57,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833096630] [2021-11-20 07:11:57,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833096630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:57,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:57,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 07:11:57,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190717583] [2021-11-20 07:11:57,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:57,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:11:57,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:57,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:11:57,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:11:57,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-11-20 07:11:57,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 216 transitions, 1357 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:57,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:57,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-11-20 07:11:57,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:58,994 INFO L129 PetriNetUnfolder]: 795/3196 cut-off events. [2021-11-20 07:11:58,994 INFO L130 PetriNetUnfolder]: For 20770/20798 co-relation queries the response was YES. [2021-11-20 07:11:59,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12248 conditions, 3196 events. 795/3196 cut-off events. For 20770/20798 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 26597 event pairs, 196 based on Foata normal form. 23/3104 useless extension candidates. Maximal degree in co-relation 12121. Up to 723 conditions per place. [2021-11-20 07:11:59,041 INFO L132 encePairwiseOnDemand]: 149/174 looper letters, 235 selfloop transitions, 55 changer transitions 31/408 dead transitions. [2021-11-20 07:11:59,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 408 transitions, 3739 flow [2021-11-20 07:11:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:11:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 07:11:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2607 transitions. [2021-11-20 07:11:59,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6242816091954023 [2021-11-20 07:11:59,044 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2607 transitions. [2021-11-20 07:11:59,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2607 transitions. [2021-11-20 07:11:59,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:59,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2607 transitions. [2021-11-20 07:11:59,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 108.625) internal successors, (2607), 24 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:59,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:59,049 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:59,049 INFO L186 Difference]: Start difference. First operand has 346 places, 216 transitions, 1357 flow. Second operand 24 states and 2607 transitions. [2021-11-20 07:11:59,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 408 transitions, 3739 flow [2021-11-20 07:11:59,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 408 transitions, 3289 flow, removed 211 selfloop flow, removed 32 redundant places. [2021-11-20 07:11:59,132 INFO L242 Difference]: Finished difference. Result has 325 places, 251 transitions, 1910 flow [2021-11-20 07:11:59,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1910, PETRI_PLACES=325, PETRI_TRANSITIONS=251} [2021-11-20 07:11:59,133 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 168 predicate places. [2021-11-20 07:11:59,133 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 251 transitions, 1910 flow [2021-11-20 07:11:59,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:59,133 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:59,134 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] [2021-11-20 07:11:59,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-20 07:11:59,134 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:11:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1769679855, now seen corresponding path program 4 times [2021-11-20 07:11:59,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:59,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218454905] [2021-11-20 07:11:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:59,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:59,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:59,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218454905] [2021-11-20 07:11:59,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218454905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:59,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:59,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 07:11:59,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115587736] [2021-11-20 07:11:59,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:59,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:11:59,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:11:59,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:11:59,539 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-11-20 07:11:59,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 251 transitions, 1910 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:59,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:59,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-11-20 07:11:59,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:02,319 INFO L129 PetriNetUnfolder]: 887/3365 cut-off events. [2021-11-20 07:12:02,319 INFO L130 PetriNetUnfolder]: For 21327/21363 co-relation queries the response was YES. [2021-11-20 07:12:02,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13422 conditions, 3365 events. 887/3365 cut-off events. For 21327/21363 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 28188 event pairs, 457 based on Foata normal form. 23/3246 useless extension candidates. Maximal degree in co-relation 13305. Up to 1024 conditions per place. [2021-11-20 07:12:02,381 INFO L132 encePairwiseOnDemand]: 149/174 looper letters, 265 selfloop transitions, 45 changer transitions 81/478 dead transitions. [2021-11-20 07:12:02,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 478 transitions, 4390 flow [2021-11-20 07:12:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:12:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 07:12:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3941 transitions. [2021-11-20 07:12:02,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6121466293880087 [2021-11-20 07:12:02,385 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3941 transitions. [2021-11-20 07:12:02,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3941 transitions. [2021-11-20 07:12:02,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:02,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3941 transitions. [2021-11-20 07:12:02,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 106.51351351351352) internal successors, (3941), 37 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:02,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 174.0) internal successors, (6612), 38 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:02,393 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 174.0) internal successors, (6612), 38 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:02,393 INFO L186 Difference]: Start difference. First operand has 325 places, 251 transitions, 1910 flow. Second operand 37 states and 3941 transitions. [2021-11-20 07:12:02,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 478 transitions, 4390 flow [2021-11-20 07:12:02,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 478 transitions, 4117 flow, removed 131 selfloop flow, removed 11 redundant places. [2021-11-20 07:12:02,505 INFO L242 Difference]: Finished difference. Result has 374 places, 257 transitions, 2018 flow [2021-11-20 07:12:02,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2018, PETRI_PLACES=374, PETRI_TRANSITIONS=257} [2021-11-20 07:12:02,506 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2021-11-20 07:12:02,506 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 257 transitions, 2018 flow [2021-11-20 07:12:02,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:02,506 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:02,507 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] [2021-11-20 07:12:02,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-20 07:12:02,507 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2128354303, now seen corresponding path program 5 times [2021-11-20 07:12:02,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949961953] [2021-11-20 07:12:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:02,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:02,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:02,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949961953] [2021-11-20 07:12:02,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949961953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:02,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:02,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 07:12:02,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675119808] [2021-11-20 07:12:02,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:02,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:12:02,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:12:02,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:12:02,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-11-20 07:12:02,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 257 transitions, 2018 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:02,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:02,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-11-20 07:12:02,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:05,640 INFO L129 PetriNetUnfolder]: 879/3443 cut-off events. [2021-11-20 07:12:05,640 INFO L130 PetriNetUnfolder]: For 25254/25286 co-relation queries the response was YES. [2021-11-20 07:12:05,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14433 conditions, 3443 events. 879/3443 cut-off events. For 25254/25286 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 29109 event pairs, 386 based on Foata normal form. 24/3346 useless extension candidates. Maximal degree in co-relation 14293. Up to 733 conditions per place. [2021-11-20 07:12:05,696 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 268 selfloop transitions, 48 changer transitions 86/489 dead transitions. [2021-11-20 07:12:05,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 489 transitions, 4732 flow [2021-11-20 07:12:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 07:12:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-20 07:12:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3825 transitions. [2021-11-20 07:12:05,699 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.610632183908046 [2021-11-20 07:12:05,699 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3825 transitions. [2021-11-20 07:12:05,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3825 transitions. [2021-11-20 07:12:05,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:05,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3825 transitions. [2021-11-20 07:12:05,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 106.25) internal successors, (3825), 36 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:05,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:05,707 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:05,707 INFO L186 Difference]: Start difference. First operand has 374 places, 257 transitions, 2018 flow. Second operand 36 states and 3825 transitions. [2021-11-20 07:12:05,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 489 transitions, 4732 flow [2021-11-20 07:12:05,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 489 transitions, 4308 flow, removed 179 selfloop flow, removed 32 redundant places. [2021-11-20 07:12:05,828 INFO L242 Difference]: Finished difference. Result has 378 places, 257 transitions, 2117 flow [2021-11-20 07:12:05,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2117, PETRI_PLACES=378, PETRI_TRANSITIONS=257} [2021-11-20 07:12:05,829 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2021-11-20 07:12:05,829 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 257 transitions, 2117 flow [2021-11-20 07:12:05,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:05,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:05,830 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] [2021-11-20 07:12:05,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-20 07:12:05,830 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1008381983, now seen corresponding path program 6 times [2021-11-20 07:12:05,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:05,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111475560] [2021-11-20 07:12:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:05,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:06,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:06,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111475560] [2021-11-20 07:12:06,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111475560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:06,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:06,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 07:12:06,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746850033] [2021-11-20 07:12:06,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:06,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:12:06,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:06,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:12:06,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:12:06,232 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-11-20 07:12:06,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 257 transitions, 2117 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:06,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:06,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-11-20 07:12:06,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:08,777 INFO L129 PetriNetUnfolder]: 932/3884 cut-off events. [2021-11-20 07:12:08,777 INFO L130 PetriNetUnfolder]: For 29743/29778 co-relation queries the response was YES. [2021-11-20 07:12:08,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16087 conditions, 3884 events. 932/3884 cut-off events. For 29743/29778 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 34894 event pairs, 374 based on Foata normal form. 26/3762 useless extension candidates. Maximal degree in co-relation 15946. Up to 894 conditions per place. [2021-11-20 07:12:08,859 INFO L132 encePairwiseOnDemand]: 148/174 looper letters, 277 selfloop transitions, 53 changer transitions 88/505 dead transitions. [2021-11-20 07:12:08,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 505 transitions, 5326 flow [2021-11-20 07:12:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 07:12:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-20 07:12:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3744 transitions. [2021-11-20 07:12:08,862 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6147783251231527 [2021-11-20 07:12:08,862 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3744 transitions. [2021-11-20 07:12:08,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3744 transitions. [2021-11-20 07:12:08,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:08,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3744 transitions. [2021-11-20 07:12:08,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 106.97142857142858) internal successors, (3744), 35 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,870 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,870 INFO L186 Difference]: Start difference. First operand has 378 places, 257 transitions, 2117 flow. Second operand 35 states and 3744 transitions. [2021-11-20 07:12:08,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 505 transitions, 5326 flow [2021-11-20 07:12:09,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 505 transitions, 4822 flow, removed 191 selfloop flow, removed 34 redundant places. [2021-11-20 07:12:09,022 INFO L242 Difference]: Finished difference. Result has 379 places, 265 transitions, 2326 flow [2021-11-20 07:12:09,022 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2326, PETRI_PLACES=379, PETRI_TRANSITIONS=265} [2021-11-20 07:12:09,023 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2021-11-20 07:12:09,023 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 265 transitions, 2326 flow [2021-11-20 07:12:09,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,023 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:09,023 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] [2021-11-20 07:12:09,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-20 07:12:09,024 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:09,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1020131393, now seen corresponding path program 1 times [2021-11-20 07:12:09,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:09,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966324921] [2021-11-20 07:12:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:09,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:09,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:09,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966324921] [2021-11-20 07:12:09,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966324921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:09,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:09,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:12:09,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138460162] [2021-11-20 07:12:09,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:09,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:12:09,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:12:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:12:09,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2021-11-20 07:12:09,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 265 transitions, 2326 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:09,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2021-11-20 07:12:09,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:09,576 INFO L129 PetriNetUnfolder]: 173/1546 cut-off events. [2021-11-20 07:12:09,577 INFO L130 PetriNetUnfolder]: For 11881/11936 co-relation queries the response was YES. [2021-11-20 07:12:09,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5786 conditions, 1546 events. 173/1546 cut-off events. For 11881/11936 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11460 event pairs, 104 based on Foata normal form. 42/1525 useless extension candidates. Maximal degree in co-relation 5644. Up to 141 conditions per place. [2021-11-20 07:12:09,604 INFO L132 encePairwiseOnDemand]: 170/174 looper letters, 45 selfloop transitions, 4 changer transitions 1/251 dead transitions. [2021-11-20 07:12:09,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 251 transitions, 2160 flow [2021-11-20 07:12:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:12:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 07:12:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2021-11-20 07:12:09,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2021-11-20 07:12:09,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2021-11-20 07:12:09,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2021-11-20 07:12:09,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:09,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2021-11-20 07:12:09,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,607 INFO L186 Difference]: Start difference. First operand has 379 places, 265 transitions, 2326 flow. Second operand 3 states and 450 transitions. [2021-11-20 07:12:09,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 251 transitions, 2160 flow [2021-11-20 07:12:09,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 251 transitions, 2048 flow, removed 37 selfloop flow, removed 30 redundant places. [2021-11-20 07:12:09,663 INFO L242 Difference]: Finished difference. Result has 323 places, 249 transitions, 1950 flow [2021-11-20 07:12:09,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1950, PETRI_PLACES=323, PETRI_TRANSITIONS=249} [2021-11-20 07:12:09,664 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 166 predicate places. [2021-11-20 07:12:09,664 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 249 transitions, 1950 flow [2021-11-20 07:12:09,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:09,664 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] [2021-11-20 07:12:09,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-20 07:12:09,665 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:09,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:09,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1028618477, now seen corresponding path program 7 times [2021-11-20 07:12:09,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:09,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939465469] [2021-11-20 07:12:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:09,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:10,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:10,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939465469] [2021-11-20 07:12:10,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939465469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:10,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:10,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 07:12:10,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280231495] [2021-11-20 07:12:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:10,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:12:10,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:12:10,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:12:10,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-11-20 07:12:10,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 249 transitions, 1950 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:10,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:10,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-11-20 07:12:10,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:12,243 INFO L129 PetriNetUnfolder]: 780/3290 cut-off events. [2021-11-20 07:12:12,243 INFO L130 PetriNetUnfolder]: For 22257/22292 co-relation queries the response was YES. [2021-11-20 07:12:12,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12982 conditions, 3290 events. 780/3290 cut-off events. For 22257/22292 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 28240 event pairs, 373 based on Foata normal form. 25/3179 useless extension candidates. Maximal degree in co-relation 12868. Up to 814 conditions per place. [2021-11-20 07:12:12,292 INFO L132 encePairwiseOnDemand]: 148/174 looper letters, 227 selfloop transitions, 69 changer transitions 59/442 dead transitions. [2021-11-20 07:12:12,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 442 transitions, 4719 flow [2021-11-20 07:12:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:12:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:12:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3211 transitions. [2021-11-20 07:12:12,295 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6151340996168583 [2021-11-20 07:12:12,295 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3211 transitions. [2021-11-20 07:12:12,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3211 transitions. [2021-11-20 07:12:12,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:12,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3211 transitions. [2021-11-20 07:12:12,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 107.03333333333333) internal successors, (3211), 30 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,302 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,303 INFO L186 Difference]: Start difference. First operand has 323 places, 249 transitions, 1950 flow. Second operand 30 states and 3211 transitions. [2021-11-20 07:12:12,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 442 transitions, 4719 flow [2021-11-20 07:12:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 442 transitions, 4714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 07:12:12,391 INFO L242 Difference]: Finished difference. Result has 374 places, 280 transitions, 2691 flow [2021-11-20 07:12:12,391 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2691, PETRI_PLACES=374, PETRI_TRANSITIONS=280} [2021-11-20 07:12:12,392 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2021-11-20 07:12:12,392 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 280 transitions, 2691 flow [2021-11-20 07:12:12,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,392 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:12,392 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] [2021-11-20 07:12:12,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-20 07:12:12,393 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2075554139, now seen corresponding path program 8 times [2021-11-20 07:12:12,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:12,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539927701] [2021-11-20 07:12:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:12,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:12,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:12,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539927701] [2021-11-20 07:12:12,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539927701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:12,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:12,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:12:12,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000398862] [2021-11-20 07:12:12,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:12,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:12:12,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:12:12,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:12:12,463 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2021-11-20 07:12:12,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 280 transitions, 2691 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:12,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2021-11-20 07:12:12,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:12,656 INFO L129 PetriNetUnfolder]: 52/557 cut-off events. [2021-11-20 07:12:12,656 INFO L130 PetriNetUnfolder]: For 2686/2688 co-relation queries the response was YES. [2021-11-20 07:12:12,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1840 conditions, 557 events. 52/557 cut-off events. For 2686/2688 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2648 event pairs, 33 based on Foata normal form. 9/540 useless extension candidates. Maximal degree in co-relation 1703. Up to 77 conditions per place. [2021-11-20 07:12:12,668 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 28 selfloop transitions, 0 changer transitions 34/181 dead transitions. [2021-11-20 07:12:12,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 181 transitions, 1020 flow [2021-11-20 07:12:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:12:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-20 07:12:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2021-11-20 07:12:12,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8471264367816091 [2021-11-20 07:12:12,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2021-11-20 07:12:12,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2021-11-20 07:12:12,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:12,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2021-11-20 07:12:12,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,675 INFO L186 Difference]: Start difference. First operand has 374 places, 280 transitions, 2691 flow. Second operand 5 states and 737 transitions. [2021-11-20 07:12:12,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 181 transitions, 1020 flow [2021-11-20 07:12:12,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 181 transitions, 843 flow, removed 66 selfloop flow, removed 45 redundant places. [2021-11-20 07:12:12,697 INFO L242 Difference]: Finished difference. Result has 278 places, 147 transitions, 510 flow [2021-11-20 07:12:12,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=278, PETRI_TRANSITIONS=147} [2021-11-20 07:12:12,698 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 121 predicate places. [2021-11-20 07:12:12,698 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 147 transitions, 510 flow [2021-11-20 07:12:12,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:12,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:12,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:12:12,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-20 07:12:12,699 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:12,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:12,699 INFO L85 PathProgramCache]: Analyzing trace with hash 46151301, now seen corresponding path program 1 times [2021-11-20 07:12:12,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:12,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553879745] [2021-11-20 07:12:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:12,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:13,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:13,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553879745] [2021-11-20 07:12:13,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553879745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:13,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:13,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:12:13,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783140300] [2021-11-20 07:12:13,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:13,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:12:13,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:12:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:12:13,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:12:13,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 147 transitions, 510 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:13,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:13,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:12:13,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:26,154 INFO L129 PetriNetUnfolder]: 586/1835 cut-off events. [2021-11-20 07:12:26,155 INFO L130 PetriNetUnfolder]: For 4171/4171 co-relation queries the response was YES. [2021-11-20 07:12:26,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5069 conditions, 1835 events. 586/1835 cut-off events. For 4171/4171 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10960 event pairs, 0 based on Foata normal form. 1/1810 useless extension candidates. Maximal degree in co-relation 4971. Up to 135 conditions per place. [2021-11-20 07:12:26,176 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 342 selfloop transitions, 20 changer transitions 183/616 dead transitions. [2021-11-20 07:12:26,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 616 transitions, 4011 flow [2021-11-20 07:12:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-20 07:12:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-11-20 07:12:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2021-11-20 07:12:26,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2021-11-20 07:12:26,182 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2021-11-20 07:12:26,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2021-11-20 07:12:26,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:26,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2021-11-20 07:12:26,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:26,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:26,201 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:26,201 INFO L186 Difference]: Start difference. First operand has 278 places, 147 transitions, 510 flow. Second operand 88 states and 7849 transitions. [2021-11-20 07:12:26,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 616 transitions, 4011 flow [2021-11-20 07:12:26,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 616 transitions, 3476 flow, removed 240 selfloop flow, removed 22 redundant places. [2021-11-20 07:12:26,219 INFO L242 Difference]: Finished difference. Result has 384 places, 147 transitions, 621 flow [2021-11-20 07:12:26,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=621, PETRI_PLACES=384, PETRI_TRANSITIONS=147} [2021-11-20 07:12:26,220 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 227 predicate places. [2021-11-20 07:12:26,220 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 147 transitions, 621 flow [2021-11-20 07:12:26,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:26,220 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:26,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:12:26,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-20 07:12:26,221 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2013257003, now seen corresponding path program 2 times [2021-11-20 07:12:26,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:26,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958918202] [2021-11-20 07:12:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:26,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:27,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:27,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958918202] [2021-11-20 07:12:27,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958918202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:27,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:27,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:12:27,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057209770] [2021-11-20 07:12:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:27,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:12:27,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:12:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:12:27,276 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:12:27,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 147 transitions, 621 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:27,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:27,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:12:27,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:46,928 INFO L129 PetriNetUnfolder]: 889/2791 cut-off events. [2021-11-20 07:12:46,929 INFO L130 PetriNetUnfolder]: For 15805/15805 co-relation queries the response was YES. [2021-11-20 07:12:46,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10549 conditions, 2791 events. 889/2791 cut-off events. For 15805/15805 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19439 event pairs, 50 based on Foata normal form. 1/2734 useless extension candidates. Maximal degree in co-relation 10398. Up to 895 conditions per place. [2021-11-20 07:12:46,976 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 361 selfloop transitions, 20 changer transitions 160/612 dead transitions. [2021-11-20 07:12:46,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 612 transitions, 4876 flow [2021-11-20 07:12:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-20 07:12:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-11-20 07:12:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2021-11-20 07:12:46,983 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2021-11-20 07:12:46,983 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2021-11-20 07:12:46,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2021-11-20 07:12:47,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:47,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2021-11-20 07:12:47,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:47,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:47,126 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:47,127 INFO L186 Difference]: Start difference. First operand has 384 places, 147 transitions, 621 flow. Second operand 88 states and 7845 transitions. [2021-11-20 07:12:47,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 612 transitions, 4876 flow [2021-11-20 07:12:47,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 612 transitions, 3477 flow, removed 459 selfloop flow, removed 82 redundant places. [2021-11-20 07:12:47,174 INFO L242 Difference]: Finished difference. Result has 403 places, 160 transitions, 851 flow [2021-11-20 07:12:47,174 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=851, PETRI_PLACES=403, PETRI_TRANSITIONS=160} [2021-11-20 07:12:47,174 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 246 predicate places. [2021-11-20 07:12:47,174 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 160 transitions, 851 flow [2021-11-20 07:12:47,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:47,175 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:47,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:12:47,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-20 07:12:47,175 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 278112939, now seen corresponding path program 3 times [2021-11-20 07:12:47,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:47,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846999778] [2021-11-20 07:12:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:47,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:47,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:47,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846999778] [2021-11-20 07:12:47,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846999778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:47,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:47,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:12:47,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604677339] [2021-11-20 07:12:47,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:47,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:12:47,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:12:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:12:48,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2021-11-20 07:12:48,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 160 transitions, 851 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:48,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:48,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2021-11-20 07:12:48,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:12:57,104 INFO L129 PetriNetUnfolder]: 885/2924 cut-off events. [2021-11-20 07:12:57,104 INFO L130 PetriNetUnfolder]: For 30951/30952 co-relation queries the response was YES. [2021-11-20 07:12:57,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12999 conditions, 2924 events. 885/2924 cut-off events. For 30951/30952 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 21426 event pairs, 12 based on Foata normal form. 2/2891 useless extension candidates. Maximal degree in co-relation 12830. Up to 250 conditions per place. [2021-11-20 07:12:57,157 INFO L132 encePairwiseOnDemand]: 139/174 looper letters, 419 selfloop transitions, 18 changer transitions 157/679 dead transitions. [2021-11-20 07:12:57,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 679 transitions, 6928 flow [2021-11-20 07:12:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:12:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:12:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 8464 transitions. [2021-11-20 07:12:57,166 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5790914066776136 [2021-11-20 07:12:57,166 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 8464 transitions. [2021-11-20 07:12:57,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 8464 transitions. [2021-11-20 07:12:57,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:57,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 8464 transitions. [2021-11-20 07:12:57,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 100.76190476190476) internal successors, (8464), 84 states have internal predecessors, (8464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:57,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:57,187 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:57,187 INFO L186 Difference]: Start difference. First operand has 403 places, 160 transitions, 851 flow. Second operand 84 states and 8464 transitions. [2021-11-20 07:12:57,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 679 transitions, 6928 flow [2021-11-20 07:12:57,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 679 transitions, 6381 flow, removed 268 selfloop flow, removed 32 redundant places. [2021-11-20 07:12:57,310 INFO L242 Difference]: Finished difference. Result has 455 places, 166 transitions, 1050 flow [2021-11-20 07:12:57,311 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1050, PETRI_PLACES=455, PETRI_TRANSITIONS=166} [2021-11-20 07:12:57,311 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 298 predicate places. [2021-11-20 07:12:57,311 INFO L470 AbstractCegarLoop]: Abstraction has has 455 places, 166 transitions, 1050 flow [2021-11-20 07:12:57,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:57,312 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:12:57,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:12:57,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-20 07:12:57,312 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:12:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:57,312 INFO L85 PathProgramCache]: Analyzing trace with hash 949934537, now seen corresponding path program 4 times [2021-11-20 07:12:57,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:57,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067703396] [2021-11-20 07:12:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:57,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:58,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:58,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067703396] [2021-11-20 07:12:58,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067703396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:58,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:58,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:12:58,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399209660] [2021-11-20 07:12:58,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:58,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:12:58,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:12:58,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:12:58,345 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:12:58,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 166 transitions, 1050 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:58,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:12:58,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:12:58,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:13:14,840 INFO L129 PetriNetUnfolder]: 1056/3408 cut-off events. [2021-11-20 07:13:14,841 INFO L130 PetriNetUnfolder]: For 38322/38322 co-relation queries the response was YES. [2021-11-20 07:13:14,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16897 conditions, 3408 events. 1056/3408 cut-off events. For 38322/38322 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 25406 event pairs, 64 based on Foata normal form. 1/3337 useless extension candidates. Maximal degree in co-relation 16686. Up to 895 conditions per place. [2021-11-20 07:13:14,929 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 412 selfloop transitions, 26 changer transitions 151/660 dead transitions. [2021-11-20 07:13:14,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 660 transitions, 7803 flow [2021-11-20 07:13:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:13:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:13:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7520 transitions. [2021-11-20 07:13:14,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5145046524356869 [2021-11-20 07:13:14,936 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7520 transitions. [2021-11-20 07:13:14,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7520 transitions. [2021-11-20 07:13:14,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:13:14,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7520 transitions. [2021-11-20 07:13:14,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.52380952380952) internal successors, (7520), 84 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:14,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:14,956 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:14,956 INFO L186 Difference]: Start difference. First operand has 455 places, 166 transitions, 1050 flow. Second operand 84 states and 7520 transitions. [2021-11-20 07:13:14,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 660 transitions, 7803 flow [2021-11-20 07:13:15,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 660 transitions, 6715 flow, removed 460 selfloop flow, removed 69 redundant places. [2021-11-20 07:13:15,131 INFO L242 Difference]: Finished difference. Result has 469 places, 172 transitions, 1142 flow [2021-11-20 07:13:15,131 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1142, PETRI_PLACES=469, PETRI_TRANSITIONS=172} [2021-11-20 07:13:15,132 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 312 predicate places. [2021-11-20 07:13:15,132 INFO L470 AbstractCegarLoop]: Abstraction has has 469 places, 172 transitions, 1142 flow [2021-11-20 07:13:15,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:15,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:13:15,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:15,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-20 07:13:15,133 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:13:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash -541703807, now seen corresponding path program 5 times [2021-11-20 07:13:15,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:15,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371151900] [2021-11-20 07:13:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:15,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:16,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371151900] [2021-11-20 07:13:16,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371151900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:16,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:16,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:13:16,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068137308] [2021-11-20 07:13:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:16,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:13:16,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:16,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:13:16,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:13:16,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:13:16,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 172 transitions, 1142 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:16,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:13:16,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:13:16,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:13:38,947 INFO L129 PetriNetUnfolder]: 1179/3828 cut-off events. [2021-11-20 07:13:38,948 INFO L130 PetriNetUnfolder]: For 59343/59343 co-relation queries the response was YES. [2021-11-20 07:13:39,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20448 conditions, 3828 events. 1179/3828 cut-off events. For 59343/59343 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 29647 event pairs, 70 based on Foata normal form. 1/3781 useless extension candidates. Maximal degree in co-relation 20233. Up to 389 conditions per place. [2021-11-20 07:13:39,058 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 478 selfloop transitions, 29 changer transitions 163/741 dead transitions. [2021-11-20 07:13:39,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 741 transitions, 8722 flow [2021-11-20 07:13:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:13:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:13:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2021-11-20 07:13:39,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2021-11-20 07:13:39,065 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2021-11-20 07:13:39,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2021-11-20 07:13:39,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:13:39,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2021-11-20 07:13:39,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:39,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:39,086 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:39,087 INFO L186 Difference]: Start difference. First operand has 469 places, 172 transitions, 1142 flow. Second operand 84 states and 7507 transitions. [2021-11-20 07:13:39,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 741 transitions, 8722 flow [2021-11-20 07:13:39,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 741 transitions, 7848 flow, removed 346 selfloop flow, removed 69 redundant places. [2021-11-20 07:13:39,633 INFO L242 Difference]: Finished difference. Result has 488 places, 179 transitions, 1342 flow [2021-11-20 07:13:39,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1342, PETRI_PLACES=488, PETRI_TRANSITIONS=179} [2021-11-20 07:13:39,633 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 331 predicate places. [2021-11-20 07:13:39,633 INFO L470 AbstractCegarLoop]: Abstraction has has 488 places, 179 transitions, 1342 flow [2021-11-20 07:13:39,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:39,634 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:13:39,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:39,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-20 07:13:39,634 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:13:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1752354071, now seen corresponding path program 6 times [2021-11-20 07:13:39,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:39,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317606892] [2021-11-20 07:13:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:39,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:40,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:40,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317606892] [2021-11-20 07:13:40,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317606892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:40,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:40,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:13:40,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185225299] [2021-11-20 07:13:40,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:40,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:13:40,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:13:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:13:40,721 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:13:40,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 179 transitions, 1342 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:40,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:13:40,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:13:40,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:13:58,548 INFO L129 PetriNetUnfolder]: 1270/4174 cut-off events. [2021-11-20 07:13:58,548 INFO L130 PetriNetUnfolder]: For 67834/67834 co-relation queries the response was YES. [2021-11-20 07:13:58,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23176 conditions, 4174 events. 1270/4174 cut-off events. For 67834/67834 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 33024 event pairs, 155 based on Foata normal form. 1/4089 useless extension candidates. Maximal degree in co-relation 22952. Up to 895 conditions per place. [2021-11-20 07:13:58,667 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 446 selfloop transitions, 30 changer transitions 156/703 dead transitions. [2021-11-20 07:13:58,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 703 transitions, 9750 flow [2021-11-20 07:13:58,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:13:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:13:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7522 transitions. [2021-11-20 07:13:58,673 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5146414887794198 [2021-11-20 07:13:58,673 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7522 transitions. [2021-11-20 07:13:58,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7522 transitions. [2021-11-20 07:13:58,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:13:58,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7522 transitions. [2021-11-20 07:13:58,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.54761904761905) internal successors, (7522), 84 states have internal predecessors, (7522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:58,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:58,692 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:58,693 INFO L186 Difference]: Start difference. First operand has 488 places, 179 transitions, 1342 flow. Second operand 84 states and 7522 transitions. [2021-11-20 07:13:58,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 703 transitions, 9750 flow [2021-11-20 07:13:59,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 703 transitions, 8431 flow, removed 565 selfloop flow, removed 64 redundant places. [2021-11-20 07:13:59,046 INFO L242 Difference]: Finished difference. Result has 512 places, 186 transitions, 1487 flow [2021-11-20 07:13:59,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1487, PETRI_PLACES=512, PETRI_TRANSITIONS=186} [2021-11-20 07:13:59,046 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 355 predicate places. [2021-11-20 07:13:59,047 INFO L470 AbstractCegarLoop]: Abstraction has has 512 places, 186 transitions, 1487 flow [2021-11-20 07:13:59,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:59,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:13:59,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:59,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-20 07:13:59,047 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:13:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash -563645297, now seen corresponding path program 7 times [2021-11-20 07:13:59,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:59,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839751652] [2021-11-20 07:13:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:59,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:00,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:00,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839751652] [2021-11-20 07:14:00,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839751652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:00,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:00,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:14:00,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566414563] [2021-11-20 07:14:00,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:00,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:14:00,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:00,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:14:00,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:14:00,014 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:14:00,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 186 transitions, 1487 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:00,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:14:00,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:14:00,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:14:15,827 INFO L129 PetriNetUnfolder]: 1410/4631 cut-off events. [2021-11-20 07:14:15,827 INFO L130 PetriNetUnfolder]: For 100650/100654 co-relation queries the response was YES. [2021-11-20 07:14:15,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27969 conditions, 4631 events. 1410/4631 cut-off events. For 100650/100654 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 37761 event pairs, 191 based on Foata normal form. 1/4563 useless extension candidates. Maximal degree in co-relation 27731. Up to 618 conditions per place. [2021-11-20 07:14:15,945 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 494 selfloop transitions, 31 changer transitions 168/764 dead transitions. [2021-11-20 07:14:15,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 764 transitions, 10865 flow [2021-11-20 07:14:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:14:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:14:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2021-11-20 07:14:15,951 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2021-11-20 07:14:15,951 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2021-11-20 07:14:15,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2021-11-20 07:14:15,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:14:15,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2021-11-20 07:14:15,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:15,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:15,967 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:15,968 INFO L186 Difference]: Start difference. First operand has 512 places, 186 transitions, 1487 flow. Second operand 84 states and 7505 transitions. [2021-11-20 07:14:15,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 764 transitions, 10865 flow [2021-11-20 07:14:16,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 764 transitions, 9809 flow, removed 434 selfloop flow, removed 63 redundant places. [2021-11-20 07:14:16,428 INFO L242 Difference]: Finished difference. Result has 539 places, 194 transitions, 1772 flow [2021-11-20 07:14:16,428 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1772, PETRI_PLACES=539, PETRI_TRANSITIONS=194} [2021-11-20 07:14:16,428 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 382 predicate places. [2021-11-20 07:14:16,428 INFO L470 AbstractCegarLoop]: Abstraction has has 539 places, 194 transitions, 1772 flow [2021-11-20 07:14:16,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:16,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:14:16,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:16,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-20 07:14:16,429 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:14:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2027120813, now seen corresponding path program 8 times [2021-11-20 07:14:16,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:16,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344218151] [2021-11-20 07:14:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:16,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:17,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:17,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344218151] [2021-11-20 07:14:17,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344218151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:17,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:17,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:14:17,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841375745] [2021-11-20 07:14:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:17,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:14:17,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:14:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:14:17,361 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:14:17,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 194 transitions, 1772 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:17,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:14:17,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:14:17,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:14:36,608 INFO L129 PetriNetUnfolder]: 1806/5789 cut-off events. [2021-11-20 07:14:36,608 INFO L130 PetriNetUnfolder]: For 162907/162907 co-relation queries the response was YES. [2021-11-20 07:14:36,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39063 conditions, 5789 events. 1806/5789 cut-off events. For 162907/162907 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 49929 event pairs, 451 based on Foata normal form. 1/5664 useless extension candidates. Maximal degree in co-relation 38808. Up to 1242 conditions per place. [2021-11-20 07:14:36,801 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 452 selfloop transitions, 26 changer transitions 161/710 dead transitions. [2021-11-20 07:14:36,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 710 transitions, 11748 flow [2021-11-20 07:14:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:14:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:14:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7541 transitions. [2021-11-20 07:14:36,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5159414340448824 [2021-11-20 07:14:36,807 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7541 transitions. [2021-11-20 07:14:36,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7541 transitions. [2021-11-20 07:14:36,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:14:36,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7541 transitions. [2021-11-20 07:14:36,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.77380952380952) internal successors, (7541), 84 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:36,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:36,825 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:36,826 INFO L186 Difference]: Start difference. First operand has 539 places, 194 transitions, 1772 flow. Second operand 84 states and 7541 transitions. [2021-11-20 07:14:36,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 710 transitions, 11748 flow [2021-11-20 07:14:37,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 710 transitions, 9978 flow, removed 794 selfloop flow, removed 64 redundant places. [2021-11-20 07:14:37,703 INFO L242 Difference]: Finished difference. Result has 570 places, 205 transitions, 2051 flow [2021-11-20 07:14:37,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2051, PETRI_PLACES=570, PETRI_TRANSITIONS=205} [2021-11-20 07:14:37,703 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 413 predicate places. [2021-11-20 07:14:37,704 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 205 transitions, 2051 flow [2021-11-20 07:14:37,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:37,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:14:37,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:37,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-20 07:14:37,704 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:14:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash -15734907, now seen corresponding path program 9 times [2021-11-20 07:14:37,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:37,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400038855] [2021-11-20 07:14:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:37,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:38,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400038855] [2021-11-20 07:14:38,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400038855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:38,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:38,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:14:38,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998890244] [2021-11-20 07:14:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:38,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:14:38,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:14:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:14:38,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2021-11-20 07:14:38,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 205 transitions, 2051 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:38,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:14:38,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2021-11-20 07:14:38,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:14:51,255 INFO L129 PetriNetUnfolder]: 1882/6167 cut-off events. [2021-11-20 07:14:51,255 INFO L130 PetriNetUnfolder]: For 232732/232741 co-relation queries the response was YES. [2021-11-20 07:14:51,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46285 conditions, 6167 events. 1882/6167 cut-off events. For 232732/232741 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 55018 event pairs, 379 based on Foata normal form. 4/6076 useless extension candidates. Maximal degree in co-relation 46009. Up to 1323 conditions per place. [2021-11-20 07:14:51,478 INFO L132 encePairwiseOnDemand]: 139/174 looper letters, 486 selfloop transitions, 24 changer transitions 172/767 dead transitions. [2021-11-20 07:14:51,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 767 transitions, 14317 flow [2021-11-20 07:14:51,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:14:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:14:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 8466 transitions. [2021-11-20 07:14:51,484 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5792282430213465 [2021-11-20 07:14:51,484 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 8466 transitions. [2021-11-20 07:14:51,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 8466 transitions. [2021-11-20 07:14:51,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:14:51,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 8466 transitions. [2021-11-20 07:14:51,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 100.78571428571429) internal successors, (8466), 84 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:51,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:51,503 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:51,503 INFO L186 Difference]: Start difference. First operand has 570 places, 205 transitions, 2051 flow. Second operand 84 states and 8466 transitions. [2021-11-20 07:14:51,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 767 transitions, 14317 flow [2021-11-20 07:14:52,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 767 transitions, 12815 flow, removed 710 selfloop flow, removed 45 redundant places. [2021-11-20 07:14:52,633 INFO L242 Difference]: Finished difference. Result has 620 places, 214 transitions, 2452 flow [2021-11-20 07:14:52,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2452, PETRI_PLACES=620, PETRI_TRANSITIONS=214} [2021-11-20 07:14:52,634 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 463 predicate places. [2021-11-20 07:14:52,634 INFO L470 AbstractCegarLoop]: Abstraction has has 620 places, 214 transitions, 2452 flow [2021-11-20 07:14:52,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:52,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:14:52,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:52,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-20 07:14:52,636 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:14:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:52,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1287539381, now seen corresponding path program 10 times [2021-11-20 07:14:52,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:52,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711513865] [2021-11-20 07:14:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:52,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:53,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:53,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711513865] [2021-11-20 07:14:53,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711513865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:53,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:53,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:14:53,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758676249] [2021-11-20 07:14:53,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:53,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:14:53,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:14:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:14:53,656 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:14:53,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 214 transitions, 2452 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:53,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:14:53,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:14:53,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:15:14,313 INFO L129 PetriNetUnfolder]: 2215/7079 cut-off events. [2021-11-20 07:15:14,313 INFO L130 PetriNetUnfolder]: For 342369/342385 co-relation queries the response was YES. [2021-11-20 07:15:14,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58832 conditions, 7079 events. 2215/7079 cut-off events. For 342369/342385 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 63814 event pairs, 963 based on Foata normal form. 3/6902 useless extension candidates. Maximal degree in co-relation 58518. Up to 1631 conditions per place. [2021-11-20 07:15:14,634 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 456 selfloop transitions, 28 changer transitions 166/721 dead transitions. [2021-11-20 07:15:14,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 721 transitions, 15471 flow [2021-11-20 07:15:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:15:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:15:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7543 transitions. [2021-11-20 07:15:14,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5160782703886152 [2021-11-20 07:15:14,640 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7543 transitions. [2021-11-20 07:15:14,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7543 transitions. [2021-11-20 07:15:14,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:15:14,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7543 transitions. [2021-11-20 07:15:14,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.79761904761905) internal successors, (7543), 84 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:14,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:14,659 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:14,659 INFO L186 Difference]: Start difference. First operand has 620 places, 214 transitions, 2452 flow. Second operand 84 states and 7543 transitions. [2021-11-20 07:15:14,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 721 transitions, 15471 flow [2021-11-20 07:15:16,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 721 transitions, 13079 flow, removed 1112 selfloop flow, removed 67 redundant places. [2021-11-20 07:15:16,283 INFO L242 Difference]: Finished difference. Result has 646 places, 226 transitions, 2794 flow [2021-11-20 07:15:16,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2794, PETRI_PLACES=646, PETRI_TRANSITIONS=226} [2021-11-20 07:15:16,284 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 489 predicate places. [2021-11-20 07:15:16,284 INFO L470 AbstractCegarLoop]: Abstraction has has 646 places, 226 transitions, 2794 flow [2021-11-20 07:15:16,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:16,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:15:16,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:15:16,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-20 07:15:16,285 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:15:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:16,286 INFO L85 PathProgramCache]: Analyzing trace with hash 299511745, now seen corresponding path program 11 times [2021-11-20 07:15:16,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:16,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997728685] [2021-11-20 07:15:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:16,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:15:17,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:17,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997728685] [2021-11-20 07:15:17,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997728685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:15:17,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:15:17,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:15:17,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073395707] [2021-11-20 07:15:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:15:17,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:15:17,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:15:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:15:17,188 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2021-11-20 07:15:17,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 226 transitions, 2794 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:17,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:15:17,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2021-11-20 07:15:17,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:15:31,679 INFO L129 PetriNetUnfolder]: 2308/7507 cut-off events. [2021-11-20 07:15:31,679 INFO L130 PetriNetUnfolder]: For 432755/432760 co-relation queries the response was YES. [2021-11-20 07:15:31,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66228 conditions, 7507 events. 2308/7507 cut-off events. For 432755/432760 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 70170 event pairs, 616 based on Foata normal form. 4/7412 useless extension candidates. Maximal degree in co-relation 65898. Up to 2201 conditions per place. [2021-11-20 07:15:32,041 INFO L132 encePairwiseOnDemand]: 139/174 looper letters, 517 selfloop transitions, 22 changer transitions 177/801 dead transitions. [2021-11-20 07:15:32,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 801 transitions, 17642 flow [2021-11-20 07:15:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:15:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:15:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 8480 transitions. [2021-11-20 07:15:32,051 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5801860974274767 [2021-11-20 07:15:32,051 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 8480 transitions. [2021-11-20 07:15:32,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 8480 transitions. [2021-11-20 07:15:32,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:15:32,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 8480 transitions. [2021-11-20 07:15:32,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 100.95238095238095) internal successors, (8480), 84 states have internal predecessors, (8480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:32,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:32,075 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:32,076 INFO L186 Difference]: Start difference. First operand has 646 places, 226 transitions, 2794 flow. Second operand 84 states and 8480 transitions. [2021-11-20 07:15:32,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 801 transitions, 17642 flow [2021-11-20 07:15:34,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 801 transitions, 14835 flow, removed 1380 selfloop flow, removed 70 redundant places. [2021-11-20 07:15:34,400 INFO L242 Difference]: Finished difference. Result has 673 places, 236 transitions, 3146 flow [2021-11-20 07:15:34,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3146, PETRI_PLACES=673, PETRI_TRANSITIONS=236} [2021-11-20 07:15:34,400 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 516 predicate places. [2021-11-20 07:15:34,401 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 236 transitions, 3146 flow [2021-11-20 07:15:34,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:34,401 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:15:34,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:15:34,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-20 07:15:34,401 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:15:34,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:34,402 INFO L85 PathProgramCache]: Analyzing trace with hash 62215385, now seen corresponding path program 12 times [2021-11-20 07:15:34,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:34,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710843191] [2021-11-20 07:15:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:34,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:15:35,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:35,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710843191] [2021-11-20 07:15:35,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710843191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:15:35,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:15:35,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:15:35,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428069476] [2021-11-20 07:15:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:15:35,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:15:35,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:35,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:15:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:15:35,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:15:35,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 236 transitions, 3146 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:35,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:15:35,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:15:35,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:15:58,952 INFO L129 PetriNetUnfolder]: 2695/8365 cut-off events. [2021-11-20 07:15:58,952 INFO L130 PetriNetUnfolder]: For 515297/515305 co-relation queries the response was YES. [2021-11-20 07:15:59,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76994 conditions, 8365 events. 2695/8365 cut-off events. For 515297/515305 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 77137 event pairs, 1663 based on Foata normal form. 3/8196 useless extension candidates. Maximal degree in co-relation 76650. Up to 2317 conditions per place. [2021-11-20 07:15:59,411 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 471 selfloop transitions, 30 changer transitions 146/718 dead transitions. [2021-11-20 07:15:59,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 718 transitions, 16907 flow [2021-11-20 07:15:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-20 07:15:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-20 07:15:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7545 transitions. [2021-11-20 07:15:59,417 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5162151067323482 [2021-11-20 07:15:59,417 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7545 transitions. [2021-11-20 07:15:59,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7545 transitions. [2021-11-20 07:15:59,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:15:59,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7545 transitions. [2021-11-20 07:15:59,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.82142857142857) internal successors, (7545), 84 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:59,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:59,435 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:15:59,435 INFO L186 Difference]: Start difference. First operand has 673 places, 236 transitions, 3146 flow. Second operand 84 states and 7545 transitions. [2021-11-20 07:15:59,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 718 transitions, 16907 flow [2021-11-20 07:16:02,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 718 transitions, 14241 flow, removed 1282 selfloop flow, removed 65 redundant places. [2021-11-20 07:16:02,184 INFO L242 Difference]: Finished difference. Result has 702 places, 249 transitions, 3567 flow [2021-11-20 07:16:02,184 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3567, PETRI_PLACES=702, PETRI_TRANSITIONS=249} [2021-11-20 07:16:02,185 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 545 predicate places. [2021-11-20 07:16:02,185 INFO L470 AbstractCegarLoop]: Abstraction has has 702 places, 249 transitions, 3567 flow [2021-11-20 07:16:02,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:16:02,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:16:02,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:02,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-20 07:16:02,186 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:16:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash -812349237, now seen corresponding path program 13 times [2021-11-20 07:16:02,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:16:02,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308538693] [2021-11-20 07:16:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:02,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:16:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:03,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:16:03,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308538693] [2021-11-20 07:16:03,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308538693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:03,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:03,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 07:16:03,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338116080] [2021-11-20 07:16:03,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:03,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:16:03,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:16:03,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:16:03,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:16:03,142 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-11-20 07:16:03,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 249 transitions, 3567 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:16:03,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:16:03,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-11-20 07:16:03,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand