./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg --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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:53:49,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:53:49,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:53:49,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:53:49,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:53:49,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:53:49,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:53:49,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:53:49,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:53:49,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:53:49,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:53:49,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:53:49,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:53:49,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:53:49,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:53:49,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:53:49,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:53:49,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:53:49,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:53:49,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:53:49,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:53:49,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:53:49,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:53:49,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:53:49,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:53:49,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:53:49,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:53:49,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:53:49,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:53:49,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:53:49,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:53:49,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:53:49,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:53:49,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:53:49,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:53:49,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:53:49,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:53:49,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:53:49,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:53:49,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:53:49,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:53:49,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:53:49,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:53:49,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:53:49,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:53:49,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:53:49,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:53:49,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:53:49,359 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:53:49,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:53:49,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:53:49,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:53:49,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:53:49,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:53:49,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:53:49,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:53:49,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:53:49,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:53:49,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:53:49,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:53:49,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:53:49,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:53:49,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:53:49,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:53:49,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:53:49,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:53:49,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:53:49,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:53:49,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:53:49,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:53:49,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:53:49,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:53:49,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:53:49,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:53:49,365 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_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2021-10-28 09:53:49,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:53:49,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:53:49,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:53:49,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:53:49,666 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:53:49,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-10-28 09:53:49,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/data/758d90182/49ae1ea0e8494386903823ce1d10fa9c/FLAG597f5cdc3 [2021-10-28 09:53:50,139 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:53:50,140 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-10-28 09:53:50,146 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/data/758d90182/49ae1ea0e8494386903823ce1d10fa9c/FLAG597f5cdc3 [2021-10-28 09:53:50,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/data/758d90182/49ae1ea0e8494386903823ce1d10fa9c [2021-10-28 09:53:50,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:53:50,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:53:50,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:53:50,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:53:50,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:53:50,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d155eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50, skipping insertion in model container [2021-10-28 09:53:50,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:53:50,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:53:50,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-10-28 09:53:50,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:53:50,783 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:53:50,803 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-10-28 09:53:50,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:53:50,819 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:53:50,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50 WrapperNode [2021-10-28 09:53:50,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:53:50,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:53:50,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:53:50,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:53:50,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:53:50,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:53:50,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:53:50,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:53:50,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:53:50,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:53:50,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:53:50,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:53:50,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (1/1) ... [2021-10-28 09:53:50,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:53:50,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:53:50,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:53:50,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:53:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:53:50,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:53:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:53:50,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:53:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:53:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:53:50,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:53:50,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:53:50,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:53:50,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:53:50,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:53:50,983 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:53:51,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:53:51,371 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 09:53:51,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:51 BoogieIcfgContainer [2021-10-28 09:53:51,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:53:51,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:53:51,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:53:51,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:53:51,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:53:50" (1/3) ... [2021-10-28 09:53:51,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e17ccba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:53:51, skipping insertion in model container [2021-10-28 09:53:51,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:50" (2/3) ... [2021-10-28 09:53:51,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e17ccba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:53:51, skipping insertion in model container [2021-10-28 09:53:51,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:51" (3/3) ... [2021-10-28 09:53:51,383 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2021-10-28 09:53:51,389 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:53:51,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:53:51,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:53:51,389 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:53:51,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,425 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,425 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,426 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,426 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,440 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,440 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,440 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:51,447 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 09:53:51,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:53:51,503 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 [2021-10-28 09:53:51,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:53:51,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 200 flow [2021-10-28 09:53:51,564 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2021-10-28 09:53:51,564 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:53:51,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 7/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2021-10-28 09:53:51,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 200 flow [2021-10-28 09:53:51,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 82 transitions, 176 flow [2021-10-28 09:53:51,629 INFO L129 PetriNetUnfolder]: 7/81 cut-off events. [2021-10-28 09:53:51,629 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:53:51,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:51,630 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] [2021-10-28 09:53:51,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2107598189, now seen corresponding path program 1 times [2021-10-28 09:53:51,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:51,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099573938] [2021-10-28 09:53:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:51,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:52,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:52,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099573938] [2021-10-28 09:53:52,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099573938] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:52,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:52,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:53:52,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205452593] [2021-10-28 09:53:52,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:53:52,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:52,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:53:52,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:53:52,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2021-10-28 09:53:52,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 176 flow. Second operand has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:52,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2021-10-28 09:53:52,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:52,533 INFO L129 PetriNetUnfolder]: 44/254 cut-off events. [2021-10-28 09:53:52,533 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-28 09:53:52,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 254 events. 44/254 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 991 event pairs, 9 based on Foata normal form. 9/247 useless extension candidates. Maximal degree in co-relation 265. Up to 38 conditions per place. [2021-10-28 09:53:52,538 INFO L132 encePairwiseOnDemand]: 76/92 looper letters, 46 selfloop transitions, 10 changer transitions 32/140 dead transitions. [2021-10-28 09:53:52,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 477 flow [2021-10-28 09:53:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:53:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-28 09:53:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1013 transitions. [2021-10-28 09:53:52,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7340579710144928 [2021-10-28 09:53:52,558 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1013 transitions. [2021-10-28 09:53:52,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1013 transitions. [2021-10-28 09:53:52,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:52,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1013 transitions. [2021-10-28 09:53:52,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.53333333333333) internal successors, (1013), 15 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 92.0) internal successors, (1472), 16 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,593 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 92.0) internal successors, (1472), 16 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,595 INFO L186 Difference]: Start difference. First operand has 82 places, 82 transitions, 176 flow. Second operand 15 states and 1013 transitions. [2021-10-28 09:53:52,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 477 flow [2021-10-28 09:53:52,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:53:52,605 INFO L242 Difference]: Finished difference. Result has 102 places, 84 transitions, 235 flow [2021-10-28 09:53:52,607 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=235, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2021-10-28 09:53:52,608 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2021-10-28 09:53:52,608 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 235 flow [2021-10-28 09:53:52,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,609 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:52,609 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] [2021-10-28 09:53:52,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:53:52,610 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1392608778, now seen corresponding path program 1 times [2021-10-28 09:53:52,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:52,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178819798] [2021-10-28 09:53:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:52,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:52,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:52,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178819798] [2021-10-28 09:53:52,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178819798] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:52,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:52,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:53:52,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490460337] [2021-10-28 09:53:52,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:53:52,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:53:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:53:52,733 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 09:53:52,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:52,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 09:53:52,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:52,881 INFO L129 PetriNetUnfolder]: 28/285 cut-off events. [2021-10-28 09:53:52,881 INFO L130 PetriNetUnfolder]: For 75/76 co-relation queries the response was YES. [2021-10-28 09:53:52,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 285 events. 28/285 cut-off events. For 75/76 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1310 event pairs, 11 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 459. Up to 29 conditions per place. [2021-10-28 09:53:52,887 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 14 selfloop transitions, 2 changer transitions 2/90 dead transitions. [2021-10-28 09:53:52,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 283 flow [2021-10-28 09:53:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:53:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:53:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2021-10-28 09:53:52,890 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8985507246376812 [2021-10-28 09:53:52,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2021-10-28 09:53:52,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2021-10-28 09:53:52,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:52,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2021-10-28 09:53:52,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,893 INFO L186 Difference]: Start difference. First operand has 102 places, 84 transitions, 235 flow. Second operand 3 states and 248 transitions. [2021-10-28 09:53:52,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 283 flow [2021-10-28 09:53:52,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 272 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-28 09:53:52,903 INFO L242 Difference]: Finished difference. Result has 90 places, 84 transitions, 234 flow [2021-10-28 09:53:52,904 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2021-10-28 09:53:52,904 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2021-10-28 09:53:52,905 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 234 flow [2021-10-28 09:53:52,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:52,906 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:52,906 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] [2021-10-28 09:53:52,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:53:52,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1415695118, now seen corresponding path program 2 times [2021-10-28 09:53:52,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:52,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34175202] [2021-10-28 09:53:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:52,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:53,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:53,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34175202] [2021-10-28 09:53:53,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34175202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:53,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:53,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:53:53,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890461592] [2021-10-28 09:53:53,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:53:53,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:53,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:53:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:53:53,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 09:53:53,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:53,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 09:53:53,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:53,116 INFO L129 PetriNetUnfolder]: 17/152 cut-off events. [2021-10-28 09:53:53,116 INFO L130 PetriNetUnfolder]: For 55/67 co-relation queries the response was YES. [2021-10-28 09:53:53,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 152 events. 17/152 cut-off events. For 55/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 429 event pairs, 8 based on Foata normal form. 4/143 useless extension candidates. Maximal degree in co-relation 226. Up to 24 conditions per place. [2021-10-28 09:53:53,120 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 10 selfloop transitions, 2 changer transitions 8/82 dead transitions. [2021-10-28 09:53:53,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 252 flow [2021-10-28 09:53:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:53:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:53:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2021-10-28 09:53:53,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-10-28 09:53:53,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2021-10-28 09:53:53,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2021-10-28 09:53:53,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:53,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2021-10-28 09:53:53,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,125 INFO L186 Difference]: Start difference. First operand has 90 places, 84 transitions, 234 flow. Second operand 3 states and 244 transitions. [2021-10-28 09:53:53,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 252 flow [2021-10-28 09:53:53,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 242 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-28 09:53:53,131 INFO L242 Difference]: Finished difference. Result has 90 places, 74 transitions, 186 flow [2021-10-28 09:53:53,132 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2021-10-28 09:53:53,132 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2021-10-28 09:53:53,132 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 186 flow [2021-10-28 09:53:53,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,133 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:53,133 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] [2021-10-28 09:53:53,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:53:53,134 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1952965175, now seen corresponding path program 1 times [2021-10-28 09:53:53,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:53,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361083737] [2021-10-28 09:53:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:53,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:53,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:53,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361083737] [2021-10-28 09:53:53,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361083737] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:53,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:53,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:53,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177832175] [2021-10-28 09:53:53,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:53,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:53,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:53,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:53,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:53,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 186 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:53,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:53,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:53,863 INFO L129 PetriNetUnfolder]: 75/301 cut-off events. [2021-10-28 09:53:53,864 INFO L130 PetriNetUnfolder]: For 127/129 co-relation queries the response was YES. [2021-10-28 09:53:53,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 301 events. 75/301 cut-off events. For 127/129 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1203 event pairs, 30 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 565. Up to 99 conditions per place. [2021-10-28 09:53:53,867 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 66 selfloop transitions, 5 changer transitions 28/145 dead transitions. [2021-10-28 09:53:53,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 145 transitions, 627 flow [2021-10-28 09:53:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:53:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 09:53:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1420 transitions. [2021-10-28 09:53:53,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6431159420289855 [2021-10-28 09:53:53,873 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1420 transitions. [2021-10-28 09:53:53,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1420 transitions. [2021-10-28 09:53:53,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:53,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1420 transitions. [2021-10-28 09:53:53,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.166666666666664) internal successors, (1420), 24 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,886 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,887 INFO L186 Difference]: Start difference. First operand has 90 places, 74 transitions, 186 flow. Second operand 24 states and 1420 transitions. [2021-10-28 09:53:53,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 145 transitions, 627 flow [2021-10-28 09:53:53,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 566 flow, removed 29 selfloop flow, removed 5 redundant places. [2021-10-28 09:53:53,893 INFO L242 Difference]: Finished difference. Result has 123 places, 78 transitions, 265 flow [2021-10-28 09:53:53,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=265, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2021-10-28 09:53:53,894 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 41 predicate places. [2021-10-28 09:53:53,894 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 265 flow [2021-10-28 09:53:53,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:53,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:53,895 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:53,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:53:53,895 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -191362153, now seen corresponding path program 2 times [2021-10-28 09:53:53,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:53,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510399000] [2021-10-28 09:53:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:53,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:54,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:54,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510399000] [2021-10-28 09:53:54,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510399000] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:54,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:54,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:54,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917346916] [2021-10-28 09:53:54,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:54,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:54,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:54,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 265 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:54,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:54,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:54,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:54,531 INFO L129 PetriNetUnfolder]: 115/486 cut-off events. [2021-10-28 09:53:54,532 INFO L130 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2021-10-28 09:53:54,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 486 events. 115/486 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2712 event pairs, 55 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 1514. Up to 164 conditions per place. [2021-10-28 09:53:54,539 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 95 selfloop transitions, 5 changer transitions 28/174 dead transitions. [2021-10-28 09:53:54,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 174 transitions, 1161 flow [2021-10-28 09:53:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:53:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 09:53:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1425 transitions. [2021-10-28 09:53:54,546 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6453804347826086 [2021-10-28 09:53:54,547 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1425 transitions. [2021-10-28 09:53:54,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1425 transitions. [2021-10-28 09:53:54,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:54,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1425 transitions. [2021-10-28 09:53:54,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.375) internal successors, (1425), 24 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:54,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:54,561 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:54,561 INFO L186 Difference]: Start difference. First operand has 123 places, 78 transitions, 265 flow. Second operand 24 states and 1425 transitions. [2021-10-28 09:53:54,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 174 transitions, 1161 flow [2021-10-28 09:53:54,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 174 transitions, 1037 flow, removed 59 selfloop flow, removed 12 redundant places. [2021-10-28 09:53:54,576 INFO L242 Difference]: Finished difference. Result has 139 places, 82 transitions, 345 flow [2021-10-28 09:53:54,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=345, PETRI_PLACES=139, PETRI_TRANSITIONS=82} [2021-10-28 09:53:54,577 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 57 predicate places. [2021-10-28 09:53:54,577 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 82 transitions, 345 flow [2021-10-28 09:53:54,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:54,577 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:54,578 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] [2021-10-28 09:53:54,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:53:54,578 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1778161647, now seen corresponding path program 3 times [2021-10-28 09:53:54,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:54,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20157125] [2021-10-28 09:53:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:54,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:54,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:54,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20157125] [2021-10-28 09:53:54,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20157125] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:54,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:54,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:54,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857520016] [2021-10-28 09:53:54,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:54,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:54,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:54,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:54,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 82 transitions, 345 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:54,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:54,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:54,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:55,158 INFO L129 PetriNetUnfolder]: 122/491 cut-off events. [2021-10-28 09:53:55,158 INFO L130 PetriNetUnfolder]: For 2467/2467 co-relation queries the response was YES. [2021-10-28 09:53:55,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 491 events. 122/491 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2624 event pairs, 69 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 1939. Up to 215 conditions per place. [2021-10-28 09:53:55,167 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 60 selfloop transitions, 12 changer transitions 23/141 dead transitions. [2021-10-28 09:53:55,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 141 transitions, 1157 flow [2021-10-28 09:53:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:53:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 09:53:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1294 transitions. [2021-10-28 09:53:55,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6393280632411067 [2021-10-28 09:53:55,177 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1294 transitions. [2021-10-28 09:53:55,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1294 transitions. [2021-10-28 09:53:55,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:55,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1294 transitions. [2021-10-28 09:53:55,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.81818181818182) internal successors, (1294), 22 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,194 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,194 INFO L186 Difference]: Start difference. First operand has 139 places, 82 transitions, 345 flow. Second operand 22 states and 1294 transitions. [2021-10-28 09:53:55,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 141 transitions, 1157 flow [2021-10-28 09:53:55,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 141 transitions, 1084 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-10-28 09:53:55,213 INFO L242 Difference]: Finished difference. Result has 146 places, 92 transitions, 498 flow [2021-10-28 09:53:55,214 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=498, PETRI_PLACES=146, PETRI_TRANSITIONS=92} [2021-10-28 09:53:55,214 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 64 predicate places. [2021-10-28 09:53:55,214 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 92 transitions, 498 flow [2021-10-28 09:53:55,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,215 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:55,215 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] [2021-10-28 09:53:55,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:53:55,216 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:55,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2131811099, now seen corresponding path program 4 times [2021-10-28 09:53:55,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:55,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443505394] [2021-10-28 09:53:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:55,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:55,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:55,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443505394] [2021-10-28 09:53:55,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443505394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:55,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:55,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:55,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248057977] [2021-10-28 09:53:55,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:55,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:55,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:55,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:55,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:55,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 92 transitions, 498 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:55,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:55,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:55,816 INFO L129 PetriNetUnfolder]: 135/540 cut-off events. [2021-10-28 09:53:55,816 INFO L130 PetriNetUnfolder]: For 3474/3474 co-relation queries the response was YES. [2021-10-28 09:53:55,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 540 events. 135/540 cut-off events. For 3474/3474 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3047 event pairs, 79 based on Foata normal form. 1/531 useless extension candidates. Maximal degree in co-relation 2394. Up to 219 conditions per place. [2021-10-28 09:53:55,826 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 59 selfloop transitions, 19 changer transitions 23/147 dead transitions. [2021-10-28 09:53:55,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 147 transitions, 1403 flow [2021-10-28 09:53:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:53:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 09:53:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1184 transitions. [2021-10-28 09:53:55,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6434782608695652 [2021-10-28 09:53:55,832 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1184 transitions. [2021-10-28 09:53:55,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1184 transitions. [2021-10-28 09:53:55,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:55,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1184 transitions. [2021-10-28 09:53:55,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.2) internal successors, (1184), 20 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,845 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,848 INFO L186 Difference]: Start difference. First operand has 146 places, 92 transitions, 498 flow. Second operand 20 states and 1184 transitions. [2021-10-28 09:53:55,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 147 transitions, 1403 flow [2021-10-28 09:53:55,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 147 transitions, 1255 flow, removed 74 selfloop flow, removed 9 redundant places. [2021-10-28 09:53:55,877 INFO L242 Difference]: Finished difference. Result has 159 places, 102 transitions, 682 flow [2021-10-28 09:53:55,878 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=682, PETRI_PLACES=159, PETRI_TRANSITIONS=102} [2021-10-28 09:53:55,878 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 77 predicate places. [2021-10-28 09:53:55,878 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 102 transitions, 682 flow [2021-10-28 09:53:55,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:55,879 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:55,879 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] [2021-10-28 09:53:55,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:53:55,880 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:55,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash 661882649, now seen corresponding path program 5 times [2021-10-28 09:53:55,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:55,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446399387] [2021-10-28 09:53:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:55,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:56,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:56,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446399387] [2021-10-28 09:53:56,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446399387] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:56,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:56,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:56,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429200876] [2021-10-28 09:53:56,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:56,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:56,067 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:56,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 102 transitions, 682 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:56,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:56,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:56,444 INFO L129 PetriNetUnfolder]: 132/533 cut-off events. [2021-10-28 09:53:56,445 INFO L130 PetriNetUnfolder]: For 4872/4875 co-relation queries the response was YES. [2021-10-28 09:53:56,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 533 events. 132/533 cut-off events. For 4872/4875 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2997 event pairs, 71 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 2657. Up to 229 conditions per place. [2021-10-28 09:53:56,456 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 69 selfloop transitions, 22 changer transitions 26/163 dead transitions. [2021-10-28 09:53:56,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 163 transitions, 1854 flow [2021-10-28 09:53:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:53:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 09:53:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1183 transitions. [2021-10-28 09:53:56,461 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6429347826086956 [2021-10-28 09:53:56,461 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1183 transitions. [2021-10-28 09:53:56,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1183 transitions. [2021-10-28 09:53:56,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:56,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1183 transitions. [2021-10-28 09:53:56,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.15) internal successors, (1183), 20 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,472 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,472 INFO L186 Difference]: Start difference. First operand has 159 places, 102 transitions, 682 flow. Second operand 20 states and 1183 transitions. [2021-10-28 09:53:56,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 163 transitions, 1854 flow [2021-10-28 09:53:56,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 163 transitions, 1665 flow, removed 85 selfloop flow, removed 10 redundant places. [2021-10-28 09:53:56,510 INFO L242 Difference]: Finished difference. Result has 172 places, 113 transitions, 882 flow [2021-10-28 09:53:56,510 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=882, PETRI_PLACES=172, PETRI_TRANSITIONS=113} [2021-10-28 09:53:56,511 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 90 predicate places. [2021-10-28 09:53:56,511 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 113 transitions, 882 flow [2021-10-28 09:53:56,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,511 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:56,512 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] [2021-10-28 09:53:56,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:53:56,512 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash -276423075, now seen corresponding path program 1 times [2021-10-28 09:53:56,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:56,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728555996] [2021-10-28 09:53:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:56,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:56,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:56,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728555996] [2021-10-28 09:53:56,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728555996] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:56,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:56,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:53:56,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890048855] [2021-10-28 09:53:56,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:53:56,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:56,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:53:56,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:53:56,589 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 09:53:56,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 113 transitions, 882 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:56,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 09:53:56,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:56,702 INFO L129 PetriNetUnfolder]: 60/403 cut-off events. [2021-10-28 09:53:56,702 INFO L130 PetriNetUnfolder]: For 3349/3380 co-relation queries the response was YES. [2021-10-28 09:53:56,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 403 events. 60/403 cut-off events. For 3349/3380 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2268 event pairs, 38 based on Foata normal form. 13/394 useless extension candidates. Maximal degree in co-relation 1676. Up to 57 conditions per place. [2021-10-28 09:53:56,709 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 8 changer transitions 0/119 dead transitions. [2021-10-28 09:53:56,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 119 transitions, 934 flow [2021-10-28 09:53:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:53:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 09:53:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2021-10-28 09:53:56,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-10-28 09:53:56,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2021-10-28 09:53:56,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2021-10-28 09:53:56,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:56,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2021-10-28 09:53:56,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,719 INFO L186 Difference]: Start difference. First operand has 172 places, 113 transitions, 882 flow. Second operand 5 states and 400 transitions. [2021-10-28 09:53:56,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 119 transitions, 934 flow [2021-10-28 09:53:56,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 119 transitions, 818 flow, removed 50 selfloop flow, removed 11 redundant places. [2021-10-28 09:53:56,746 INFO L242 Difference]: Finished difference. Result has 156 places, 117 transitions, 814 flow [2021-10-28 09:53:56,747 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=814, PETRI_PLACES=156, PETRI_TRANSITIONS=117} [2021-10-28 09:53:56,747 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 74 predicate places. [2021-10-28 09:53:56,747 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 117 transitions, 814 flow [2021-10-28 09:53:56,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,748 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:56,748 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] [2021-10-28 09:53:56,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:53:56,749 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1685080521, now seen corresponding path program 2 times [2021-10-28 09:53:56,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:56,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976446653] [2021-10-28 09:53:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:56,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:56,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:56,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976446653] [2021-10-28 09:53:56,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976446653] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:56,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:56,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:53:56,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927718576] [2021-10-28 09:53:56,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:53:56,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:53:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:53:56,847 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 09:53:56,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 117 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:56,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 09:53:56,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:56,938 INFO L129 PetriNetUnfolder]: 50/352 cut-off events. [2021-10-28 09:53:56,939 INFO L130 PetriNetUnfolder]: For 2146/2170 co-relation queries the response was YES. [2021-10-28 09:53:56,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 352 events. 50/352 cut-off events. For 2146/2170 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1872 event pairs, 27 based on Foata normal form. 13/350 useless extension candidates. Maximal degree in co-relation 1262. Up to 49 conditions per place. [2021-10-28 09:53:56,945 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 14 selfloop transitions, 7 changer transitions 0/122 dead transitions. [2021-10-28 09:53:56,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 122 transitions, 880 flow [2021-10-28 09:53:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:53:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 09:53:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2021-10-28 09:53:56,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-10-28 09:53:56,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 322 transitions. [2021-10-28 09:53:56,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 322 transitions. [2021-10-28 09:53:56,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:56,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 322 transitions. [2021-10-28 09:53:56,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,949 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,949 INFO L186 Difference]: Start difference. First operand has 156 places, 117 transitions, 814 flow. Second operand 4 states and 322 transitions. [2021-10-28 09:53:56,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 122 transitions, 880 flow [2021-10-28 09:53:56,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 122 transitions, 862 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-10-28 09:53:56,973 INFO L242 Difference]: Finished difference. Result has 160 places, 119 transitions, 834 flow [2021-10-28 09:53:56,974 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=160, PETRI_TRANSITIONS=119} [2021-10-28 09:53:56,975 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 78 predicate places. [2021-10-28 09:53:56,975 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 119 transitions, 834 flow [2021-10-28 09:53:56,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:56,976 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:56,976 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] [2021-10-28 09:53:56,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:53:56,977 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash 240417249, now seen corresponding path program 1 times [2021-10-28 09:53:56,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:56,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088504144] [2021-10-28 09:53:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:56,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:57,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:57,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088504144] [2021-10-28 09:53:57,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088504144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:57,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:57,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:53:57,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421603573] [2021-10-28 09:53:57,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:53:57,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:53:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:53:57,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 09:53:57,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 119 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:57,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 09:53:57,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:57,147 INFO L129 PetriNetUnfolder]: 49/358 cut-off events. [2021-10-28 09:53:57,147 INFO L130 PetriNetUnfolder]: For 1971/1996 co-relation queries the response was YES. [2021-10-28 09:53:57,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 358 events. 49/358 cut-off events. For 1971/1996 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1898 event pairs, 27 based on Foata normal form. 11/356 useless extension candidates. Maximal degree in co-relation 1255. Up to 50 conditions per place. [2021-10-28 09:53:57,153 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 15 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2021-10-28 09:53:57,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 122 transitions, 892 flow [2021-10-28 09:53:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:53:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 09:53:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2021-10-28 09:53:57,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8652173913043478 [2021-10-28 09:53:57,155 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2021-10-28 09:53:57,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2021-10-28 09:53:57,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:57,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2021-10-28 09:53:57,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,160 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,160 INFO L186 Difference]: Start difference. First operand has 160 places, 119 transitions, 834 flow. Second operand 5 states and 398 transitions. [2021-10-28 09:53:57,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 122 transitions, 892 flow [2021-10-28 09:53:57,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 122 transitions, 874 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-10-28 09:53:57,181 INFO L242 Difference]: Finished difference. Result has 162 places, 121 transitions, 852 flow [2021-10-28 09:53:57,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=852, PETRI_PLACES=162, PETRI_TRANSITIONS=121} [2021-10-28 09:53:57,182 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 80 predicate places. [2021-10-28 09:53:57,182 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 121 transitions, 852 flow [2021-10-28 09:53:57,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,182 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:57,182 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:57,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:53:57,185 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1922588559, now seen corresponding path program 6 times [2021-10-28 09:53:57,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:57,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281484163] [2021-10-28 09:53:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:57,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:57,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:57,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281484163] [2021-10-28 09:53:57,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281484163] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:57,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:57,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:57,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702466293] [2021-10-28 09:53:57,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:57,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:57,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:57,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 121 transitions, 852 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:57,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:57,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:57,712 INFO L129 PetriNetUnfolder]: 120/528 cut-off events. [2021-10-28 09:53:57,712 INFO L130 PetriNetUnfolder]: For 3392/3398 co-relation queries the response was YES. [2021-10-28 09:53:57,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 528 events. 120/528 cut-off events. For 3392/3398 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3035 event pairs, 75 based on Foata normal form. 1/521 useless extension candidates. Maximal degree in co-relation 2403. Up to 216 conditions per place. [2021-10-28 09:53:57,722 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 65 selfloop transitions, 27 changer transitions 24/170 dead transitions. [2021-10-28 09:53:57,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 170 transitions, 1684 flow [2021-10-28 09:53:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:53:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-28 09:53:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1241 transitions. [2021-10-28 09:53:57,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423395445134575 [2021-10-28 09:53:57,726 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1241 transitions. [2021-10-28 09:53:57,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1241 transitions. [2021-10-28 09:53:57,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:57,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1241 transitions. [2021-10-28 09:53:57,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.095238095238095) internal successors, (1241), 21 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,735 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,735 INFO L186 Difference]: Start difference. First operand has 162 places, 121 transitions, 852 flow. Second operand 21 states and 1241 transitions. [2021-10-28 09:53:57,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 170 transitions, 1684 flow [2021-10-28 09:53:57,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 170 transitions, 1670 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-28 09:53:57,766 INFO L242 Difference]: Finished difference. Result has 196 places, 131 transitions, 1076 flow [2021-10-28 09:53:57,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1076, PETRI_PLACES=196, PETRI_TRANSITIONS=131} [2021-10-28 09:53:57,766 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 114 predicate places. [2021-10-28 09:53:57,767 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 131 transitions, 1076 flow [2021-10-28 09:53:57,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,767 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:57,767 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] [2021-10-28 09:53:57,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:53:57,768 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:57,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1785571825, now seen corresponding path program 2 times [2021-10-28 09:53:57,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:57,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595175712] [2021-10-28 09:53:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:57,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:57,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:57,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595175712] [2021-10-28 09:53:57,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595175712] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:57,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:57,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:53:57,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59664317] [2021-10-28 09:53:57,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:53:57,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:57,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:53:57,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:53:57,827 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 09:53:57,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 131 transitions, 1076 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:57,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 09:53:57,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:57,919 INFO L129 PetriNetUnfolder]: 48/340 cut-off events. [2021-10-28 09:53:57,919 INFO L130 PetriNetUnfolder]: For 2472/2495 co-relation queries the response was YES. [2021-10-28 09:53:57,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 340 events. 48/340 cut-off events. For 2472/2495 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1798 event pairs, 20 based on Foata normal form. 12/342 useless extension candidates. Maximal degree in co-relation 1464. Up to 51 conditions per place. [2021-10-28 09:53:57,926 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 17 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2021-10-28 09:53:57,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 132 transitions, 1122 flow [2021-10-28 09:53:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:53:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 09:53:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2021-10-28 09:53:57,928 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8722826086956522 [2021-10-28 09:53:57,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2021-10-28 09:53:57,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2021-10-28 09:53:57,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:57,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2021-10-28 09:53:57,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,942 INFO L186 Difference]: Start difference. First operand has 196 places, 131 transitions, 1076 flow. Second operand 4 states and 321 transitions. [2021-10-28 09:53:57,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 132 transitions, 1122 flow [2021-10-28 09:53:57,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 132 transitions, 1024 flow, removed 33 selfloop flow, removed 16 redundant places. [2021-10-28 09:53:57,969 INFO L242 Difference]: Finished difference. Result has 171 places, 131 transitions, 990 flow [2021-10-28 09:53:57,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=990, PETRI_PLACES=171, PETRI_TRANSITIONS=131} [2021-10-28 09:53:57,969 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 89 predicate places. [2021-10-28 09:53:57,969 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 131 transitions, 990 flow [2021-10-28 09:53:57,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:57,970 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:57,970 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] [2021-10-28 09:53:57,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:53:57,971 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash 13541387, now seen corresponding path program 1 times [2021-10-28 09:53:57,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:57,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355188787] [2021-10-28 09:53:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:57,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:58,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:58,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355188787] [2021-10-28 09:53:58,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355188787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:58,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:58,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:58,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387817229] [2021-10-28 09:53:58,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:58,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:58,104 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:58,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 131 transitions, 990 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:58,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:58,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:58,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:58,456 INFO L129 PetriNetUnfolder]: 94/442 cut-off events. [2021-10-28 09:53:58,456 INFO L130 PetriNetUnfolder]: For 2364/2380 co-relation queries the response was YES. [2021-10-28 09:53:58,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 442 events. 94/442 cut-off events. For 2364/2380 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2346 event pairs, 35 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1922. Up to 188 conditions per place. [2021-10-28 09:53:58,464 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 106 selfloop transitions, 5 changer transitions 32/197 dead transitions. [2021-10-28 09:53:58,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 197 transitions, 1748 flow [2021-10-28 09:53:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:53:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 09:53:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1419 transitions. [2021-10-28 09:53:58,471 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6426630434782609 [2021-10-28 09:53:58,471 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1419 transitions. [2021-10-28 09:53:58,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1419 transitions. [2021-10-28 09:53:58,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:58,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1419 transitions. [2021-10-28 09:53:58,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.125) internal successors, (1419), 24 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:58,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:58,481 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:58,481 INFO L186 Difference]: Start difference. First operand has 171 places, 131 transitions, 990 flow. Second operand 24 states and 1419 transitions. [2021-10-28 09:53:58,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 197 transitions, 1748 flow [2021-10-28 09:53:58,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 197 transitions, 1688 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-10-28 09:53:58,505 INFO L242 Difference]: Finished difference. Result has 207 places, 131 transitions, 1029 flow [2021-10-28 09:53:58,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1029, PETRI_PLACES=207, PETRI_TRANSITIONS=131} [2021-10-28 09:53:58,506 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 125 predicate places. [2021-10-28 09:53:58,507 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 131 transitions, 1029 flow [2021-10-28 09:53:58,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:58,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:58,508 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] [2021-10-28 09:53:58,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 09:53:58,508 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1106046871, now seen corresponding path program 2 times [2021-10-28 09:53:58,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:58,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146184997] [2021-10-28 09:53:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:58,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:58,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:58,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146184997] [2021-10-28 09:53:58,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146184997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:58,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:58,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:58,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819866240] [2021-10-28 09:53:58,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:58,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:58,677 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:58,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 131 transitions, 1029 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:58,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:58,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:58,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:59,109 INFO L129 PetriNetUnfolder]: 91/454 cut-off events. [2021-10-28 09:53:59,109 INFO L130 PetriNetUnfolder]: For 2893/2910 co-relation queries the response was YES. [2021-10-28 09:53:59,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 454 events. 91/454 cut-off events. For 2893/2910 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2517 event pairs, 30 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 2134. Up to 188 conditions per place. [2021-10-28 09:53:59,118 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 108 selfloop transitions, 5 changer transitions 35/202 dead transitions. [2021-10-28 09:53:59,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 202 transitions, 1908 flow [2021-10-28 09:53:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:53:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 09:53:59,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1424 transitions. [2021-10-28 09:53:59,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.644927536231884 [2021-10-28 09:53:59,123 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1424 transitions. [2021-10-28 09:53:59,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1424 transitions. [2021-10-28 09:53:59,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:59,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1424 transitions. [2021-10-28 09:53:59,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.333333333333336) internal successors, (1424), 24 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,133 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,133 INFO L186 Difference]: Start difference. First operand has 207 places, 131 transitions, 1029 flow. Second operand 24 states and 1424 transitions. [2021-10-28 09:53:59,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 202 transitions, 1908 flow [2021-10-28 09:53:59,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 202 transitions, 1620 flow, removed 86 selfloop flow, removed 22 redundant places. [2021-10-28 09:53:59,163 INFO L242 Difference]: Finished difference. Result has 209 places, 131 transitions, 992 flow [2021-10-28 09:53:59,164 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=992, PETRI_PLACES=209, PETRI_TRANSITIONS=131} [2021-10-28 09:53:59,164 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 127 predicate places. [2021-10-28 09:53:59,165 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 131 transitions, 992 flow [2021-10-28 09:53:59,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:59,165 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] [2021-10-28 09:53:59,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 09:53:59,166 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:59,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1269362189, now seen corresponding path program 3 times [2021-10-28 09:53:59,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:59,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074693943] [2021-10-28 09:53:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:59,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:59,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:59,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074693943] [2021-10-28 09:53:59,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074693943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:59,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:59,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:59,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583814943] [2021-10-28 09:53:59,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:59,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:59,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:59,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:59,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:59,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 131 transitions, 992 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:59,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:59,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:59,663 INFO L129 PetriNetUnfolder]: 92/463 cut-off events. [2021-10-28 09:53:59,663 INFO L130 PetriNetUnfolder]: For 2856/2877 co-relation queries the response was YES. [2021-10-28 09:53:59,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 463 events. 92/463 cut-off events. For 2856/2877 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2568 event pairs, 35 based on Foata normal form. 2/460 useless extension candidates. Maximal degree in co-relation 2127. Up to 212 conditions per place. [2021-10-28 09:53:59,672 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 86 selfloop transitions, 14 changer transitions 20/174 dead transitions. [2021-10-28 09:53:59,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 174 transitions, 1708 flow [2021-10-28 09:53:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:53:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:53:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 956 transitions. [2021-10-28 09:53:59,676 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6494565217391305 [2021-10-28 09:53:59,676 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 956 transitions. [2021-10-28 09:53:59,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 956 transitions. [2021-10-28 09:53:59,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:59,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 956 transitions. [2021-10-28 09:53:59,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.75) internal successors, (956), 16 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,701 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,701 INFO L186 Difference]: Start difference. First operand has 209 places, 131 transitions, 992 flow. Second operand 16 states and 956 transitions. [2021-10-28 09:53:59,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 174 transitions, 1708 flow [2021-10-28 09:53:59,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 174 transitions, 1446 flow, removed 89 selfloop flow, removed 22 redundant places. [2021-10-28 09:53:59,730 INFO L242 Difference]: Finished difference. Result has 196 places, 141 transitions, 1046 flow [2021-10-28 09:53:59,731 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1046, PETRI_PLACES=196, PETRI_TRANSITIONS=141} [2021-10-28 09:53:59,731 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 114 predicate places. [2021-10-28 09:53:59,731 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 141 transitions, 1046 flow [2021-10-28 09:53:59,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:59,732 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] [2021-10-28 09:53:59,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 09:53:59,733 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:53:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash 559582597, now seen corresponding path program 4 times [2021-10-28 09:53:59,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:59,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120939167] [2021-10-28 09:53:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:59,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:59,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:59,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120939167] [2021-10-28 09:53:59,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120939167] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:59,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:59,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:59,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769683090] [2021-10-28 09:53:59,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:59,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:59,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:59,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:53:59,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 141 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:59,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:59,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:53:59,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:00,285 INFO L129 PetriNetUnfolder]: 111/515 cut-off events. [2021-10-28 09:54:00,285 INFO L130 PetriNetUnfolder]: For 2759/2779 co-relation queries the response was YES. [2021-10-28 09:54:00,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 515 events. 111/515 cut-off events. For 2759/2779 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3032 event pairs, 42 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 2278. Up to 217 conditions per place. [2021-10-28 09:54:00,294 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 101 selfloop transitions, 15 changer transitions 27/197 dead transitions. [2021-10-28 09:54:00,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 197 transitions, 1885 flow [2021-10-28 09:54:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:54:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-28 09:54:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1245 transitions. [2021-10-28 09:54:00,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6444099378881988 [2021-10-28 09:54:00,300 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1245 transitions. [2021-10-28 09:54:00,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1245 transitions. [2021-10-28 09:54:00,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:00,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1245 transitions. [2021-10-28 09:54:00,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.285714285714285) internal successors, (1245), 21 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,308 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,309 INFO L186 Difference]: Start difference. First operand has 196 places, 141 transitions, 1046 flow. Second operand 21 states and 1245 transitions. [2021-10-28 09:54:00,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 197 transitions, 1885 flow [2021-10-28 09:54:00,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 197 transitions, 1740 flow, removed 58 selfloop flow, removed 8 redundant places. [2021-10-28 09:54:00,333 INFO L242 Difference]: Finished difference. Result has 217 places, 153 transitions, 1214 flow [2021-10-28 09:54:00,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1214, PETRI_PLACES=217, PETRI_TRANSITIONS=153} [2021-10-28 09:54:00,334 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 135 predicate places. [2021-10-28 09:54:00,335 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 153 transitions, 1214 flow [2021-10-28 09:54:00,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:00,335 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] [2021-10-28 09:54:00,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 09:54:00,336 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1573883247, now seen corresponding path program 5 times [2021-10-28 09:54:00,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:00,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160132244] [2021-10-28 09:54:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:00,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:00,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:00,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160132244] [2021-10-28 09:54:00,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160132244] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:00,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:00,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:00,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498582981] [2021-10-28 09:54:00,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:00,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:00,459 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:00,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 153 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:00,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:00,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:00,863 INFO L129 PetriNetUnfolder]: 108/561 cut-off events. [2021-10-28 09:54:00,864 INFO L130 PetriNetUnfolder]: For 3483/3509 co-relation queries the response was YES. [2021-10-28 09:54:00,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2607 conditions, 561 events. 108/561 cut-off events. For 3483/3509 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3502 event pairs, 48 based on Foata normal form. 1/555 useless extension candidates. Maximal degree in co-relation 2506. Up to 222 conditions per place. [2021-10-28 09:54:00,876 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 101 selfloop transitions, 20 changer transitions 27/202 dead transitions. [2021-10-28 09:54:00,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 202 transitions, 2128 flow [2021-10-28 09:54:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:54:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 09:54:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1186 transitions. [2021-10-28 09:54:00,890 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6445652173913043 [2021-10-28 09:54:00,890 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1186 transitions. [2021-10-28 09:54:00,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1186 transitions. [2021-10-28 09:54:00,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:00,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1186 transitions. [2021-10-28 09:54:00,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.3) internal successors, (1186), 20 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,908 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,908 INFO L186 Difference]: Start difference. First operand has 217 places, 153 transitions, 1214 flow. Second operand 20 states and 1186 transitions. [2021-10-28 09:54:00,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 202 transitions, 2128 flow [2021-10-28 09:54:00,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 202 transitions, 1904 flow, removed 112 selfloop flow, removed 10 redundant places. [2021-10-28 09:54:00,944 INFO L242 Difference]: Finished difference. Result has 230 places, 162 transitions, 1345 flow [2021-10-28 09:54:00,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1345, PETRI_PLACES=230, PETRI_TRANSITIONS=162} [2021-10-28 09:54:00,944 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-28 09:54:00,944 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 162 transitions, 1345 flow [2021-10-28 09:54:00,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:00,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:00,945 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] [2021-10-28 09:54:00,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 09:54:00,946 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:00,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:00,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1939505159, now seen corresponding path program 6 times [2021-10-28 09:54:00,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:00,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127140617] [2021-10-28 09:54:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:00,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:01,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:01,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127140617] [2021-10-28 09:54:01,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127140617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:01,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:01,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:01,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392960361] [2021-10-28 09:54:01,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:01,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:01,075 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:01,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 162 transitions, 1345 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:01,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:01,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:01,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:01,444 INFO L129 PetriNetUnfolder]: 105/528 cut-off events. [2021-10-28 09:54:01,444 INFO L130 PetriNetUnfolder]: For 3883/3907 co-relation queries the response was YES. [2021-10-28 09:54:01,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 528 events. 105/528 cut-off events. For 3883/3907 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3205 event pairs, 39 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 2550. Up to 227 conditions per place. [2021-10-28 09:54:01,455 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 105 selfloop transitions, 25 changer transitions 30/214 dead transitions. [2021-10-28 09:54:01,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 214 transitions, 2293 flow [2021-10-28 09:54:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:54:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 09:54:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1187 transitions. [2021-10-28 09:54:01,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6451086956521739 [2021-10-28 09:54:01,459 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1187 transitions. [2021-10-28 09:54:01,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1187 transitions. [2021-10-28 09:54:01,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:01,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1187 transitions. [2021-10-28 09:54:01,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.35) internal successors, (1187), 20 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:01,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:01,466 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:01,466 INFO L186 Difference]: Start difference. First operand has 230 places, 162 transitions, 1345 flow. Second operand 20 states and 1187 transitions. [2021-10-28 09:54:01,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 214 transitions, 2293 flow [2021-10-28 09:54:01,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 214 transitions, 2124 flow, removed 75 selfloop flow, removed 11 redundant places. [2021-10-28 09:54:01,506 INFO L242 Difference]: Finished difference. Result has 241 places, 171 transitions, 1473 flow [2021-10-28 09:54:01,507 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1473, PETRI_PLACES=241, PETRI_TRANSITIONS=171} [2021-10-28 09:54:01,508 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 159 predicate places. [2021-10-28 09:54:01,508 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 171 transitions, 1473 flow [2021-10-28 09:54:01,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:01,509 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:01,509 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] [2021-10-28 09:54:01,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 09:54:01,509 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash -197444507, now seen corresponding path program 7 times [2021-10-28 09:54:01,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:01,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880878456] [2021-10-28 09:54:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:01,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:01,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:01,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880878456] [2021-10-28 09:54:01,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880878456] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:01,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:01,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:01,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431054463] [2021-10-28 09:54:01,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:01,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:01,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:01,635 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:01,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 171 transitions, 1473 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:01,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:01,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:01,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:02,030 INFO L129 PetriNetUnfolder]: 102/513 cut-off events. [2021-10-28 09:54:02,030 INFO L130 PetriNetUnfolder]: For 3633/3664 co-relation queries the response was YES. [2021-10-28 09:54:02,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 513 events. 102/513 cut-off events. For 3633/3664 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3116 event pairs, 35 based on Foata normal form. 7/515 useless extension candidates. Maximal degree in co-relation 2487. Up to 219 conditions per place. [2021-10-28 09:54:02,042 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 106 selfloop transitions, 26 changer transitions 33/219 dead transitions. [2021-10-28 09:54:02,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 219 transitions, 2375 flow [2021-10-28 09:54:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:54:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 09:54:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1298 transitions. [2021-10-28 09:54:02,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-28 09:54:02,045 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1298 transitions. [2021-10-28 09:54:02,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1298 transitions. [2021-10-28 09:54:02,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:02,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1298 transitions. [2021-10-28 09:54:02,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 59.0) internal successors, (1298), 22 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,053 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,054 INFO L186 Difference]: Start difference. First operand has 241 places, 171 transitions, 1473 flow. Second operand 22 states and 1298 transitions. [2021-10-28 09:54:02,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 219 transitions, 2375 flow [2021-10-28 09:54:02,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 219 transitions, 2172 flow, removed 83 selfloop flow, removed 16 redundant places. [2021-10-28 09:54:02,096 INFO L242 Difference]: Finished difference. Result has 248 places, 171 transitions, 1483 flow [2021-10-28 09:54:02,097 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1483, PETRI_PLACES=248, PETRI_TRANSITIONS=171} [2021-10-28 09:54:02,097 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 166 predicate places. [2021-10-28 09:54:02,097 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 171 transitions, 1483 flow [2021-10-28 09:54:02,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,098 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:02,098 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] [2021-10-28 09:54:02,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 09:54:02,098 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:02,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash -317309847, now seen corresponding path program 8 times [2021-10-28 09:54:02,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:02,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136054646] [2021-10-28 09:54:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:02,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:02,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:02,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136054646] [2021-10-28 09:54:02,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136054646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:02,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:02,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:02,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378624032] [2021-10-28 09:54:02,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:02,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:02,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:02,250 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:02,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 171 transitions, 1483 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:02,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:02,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:02,567 INFO L129 PetriNetUnfolder]: 93/480 cut-off events. [2021-10-28 09:54:02,567 INFO L130 PetriNetUnfolder]: For 3084/3117 co-relation queries the response was YES. [2021-10-28 09:54:02,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 480 events. 93/480 cut-off events. For 3084/3117 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2791 event pairs, 35 based on Foata normal form. 6/481 useless extension candidates. Maximal degree in co-relation 2269. Up to 218 conditions per place. [2021-10-28 09:54:02,577 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 98 selfloop transitions, 14 changer transitions 31/197 dead transitions. [2021-10-28 09:54:02,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 197 transitions, 2031 flow [2021-10-28 09:54:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1063 transitions. [2021-10-28 09:54:02,580 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6419082125603864 [2021-10-28 09:54:02,580 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1063 transitions. [2021-10-28 09:54:02,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1063 transitions. [2021-10-28 09:54:02,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:02,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1063 transitions. [2021-10-28 09:54:02,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.05555555555556) internal successors, (1063), 18 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,587 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,587 INFO L186 Difference]: Start difference. First operand has 248 places, 171 transitions, 1483 flow. Second operand 18 states and 1063 transitions. [2021-10-28 09:54:02,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 197 transitions, 2031 flow [2021-10-28 09:54:02,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 197 transitions, 1912 flow, removed 42 selfloop flow, removed 15 redundant places. [2021-10-28 09:54:02,628 INFO L242 Difference]: Finished difference. Result has 243 places, 156 transitions, 1272 flow [2021-10-28 09:54:02,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1272, PETRI_PLACES=243, PETRI_TRANSITIONS=156} [2021-10-28 09:54:02,629 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 161 predicate places. [2021-10-28 09:54:02,629 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 156 transitions, 1272 flow [2021-10-28 09:54:02,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:02,630 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] [2021-10-28 09:54:02,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 09:54:02,630 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1111382289, now seen corresponding path program 9 times [2021-10-28 09:54:02,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:02,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924501342] [2021-10-28 09:54:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:02,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:02,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:02,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924501342] [2021-10-28 09:54:02,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924501342] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:02,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:02,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:02,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782631653] [2021-10-28 09:54:02,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:02,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:02,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:02,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:02,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 156 transitions, 1272 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:02,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:02,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:02,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:03,131 INFO L129 PetriNetUnfolder]: 96/495 cut-off events. [2021-10-28 09:54:03,132 INFO L130 PetriNetUnfolder]: For 2951/2971 co-relation queries the response was YES. [2021-10-28 09:54:03,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 495 events. 96/495 cut-off events. For 2951/2971 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2877 event pairs, 41 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2325. Up to 218 conditions per place. [2021-10-28 09:54:03,141 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 95 selfloop transitions, 22 changer transitions 23/194 dead transitions. [2021-10-28 09:54:03,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 194 transitions, 1987 flow [2021-10-28 09:54:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1071 transitions. [2021-10-28 09:54:03,144 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2021-10-28 09:54:03,145 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1071 transitions. [2021-10-28 09:54:03,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1071 transitions. [2021-10-28 09:54:03,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:03,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1071 transitions. [2021-10-28 09:54:03,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.5) internal successors, (1071), 18 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,151 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,151 INFO L186 Difference]: Start difference. First operand has 243 places, 156 transitions, 1272 flow. Second operand 18 states and 1071 transitions. [2021-10-28 09:54:03,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 194 transitions, 1987 flow [2021-10-28 09:54:03,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 194 transitions, 1793 flow, removed 41 selfloop flow, removed 19 redundant places. [2021-10-28 09:54:03,192 INFO L242 Difference]: Finished difference. Result has 227 places, 165 transitions, 1361 flow [2021-10-28 09:54:03,192 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1361, PETRI_PLACES=227, PETRI_TRANSITIONS=165} [2021-10-28 09:54:03,192 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 145 predicate places. [2021-10-28 09:54:03,192 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 165 transitions, 1361 flow [2021-10-28 09:54:03,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,193 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:03,193 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] [2021-10-28 09:54:03,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 09:54:03,194 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:03,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1520587631, now seen corresponding path program 10 times [2021-10-28 09:54:03,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:03,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478330037] [2021-10-28 09:54:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:03,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:03,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:03,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478330037] [2021-10-28 09:54:03,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478330037] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:03,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:03,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:03,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664990123] [2021-10-28 09:54:03,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:03,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:03,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:03,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 165 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:03,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:03,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:03,667 INFO L129 PetriNetUnfolder]: 93/482 cut-off events. [2021-10-28 09:54:03,667 INFO L130 PetriNetUnfolder]: For 2440/2460 co-relation queries the response was YES. [2021-10-28 09:54:03,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 482 events. 93/482 cut-off events. For 2440/2460 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2796 event pairs, 39 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2200. Up to 218 conditions per place. [2021-10-28 09:54:03,677 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 96 selfloop transitions, 24 changer transitions 24/198 dead transitions. [2021-10-28 09:54:03,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 198 transitions, 1986 flow [2021-10-28 09:54:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:54:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:54:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1015 transitions. [2021-10-28 09:54:03,680 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6489769820971867 [2021-10-28 09:54:03,680 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1015 transitions. [2021-10-28 09:54:03,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1015 transitions. [2021-10-28 09:54:03,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:03,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1015 transitions. [2021-10-28 09:54:03,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.705882352941174) internal successors, (1015), 17 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,687 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,687 INFO L186 Difference]: Start difference. First operand has 227 places, 165 transitions, 1361 flow. Second operand 17 states and 1015 transitions. [2021-10-28 09:54:03,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 198 transitions, 1986 flow [2021-10-28 09:54:03,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 198 transitions, 1915 flow, removed 30 selfloop flow, removed 5 redundant places. [2021-10-28 09:54:03,719 INFO L242 Difference]: Finished difference. Result has 239 places, 169 transitions, 1451 flow [2021-10-28 09:54:03,720 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1451, PETRI_PLACES=239, PETRI_TRANSITIONS=169} [2021-10-28 09:54:03,720 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 157 predicate places. [2021-10-28 09:54:03,720 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 169 transitions, 1451 flow [2021-10-28 09:54:03,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:03,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:03,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 09:54:03,721 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash -303811921, now seen corresponding path program 11 times [2021-10-28 09:54:03,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:03,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272612601] [2021-10-28 09:54:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:03,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:03,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:03,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272612601] [2021-10-28 09:54:03,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272612601] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:03,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:03,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:03,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654882677] [2021-10-28 09:54:03,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:03,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:03,847 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:03,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 169 transitions, 1451 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:03,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:03,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:03,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:04,163 INFO L129 PetriNetUnfolder]: 89/471 cut-off events. [2021-10-28 09:54:04,163 INFO L130 PetriNetUnfolder]: For 2507/2533 co-relation queries the response was YES. [2021-10-28 09:54:04,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 471 events. 89/471 cut-off events. For 2507/2533 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2722 event pairs, 37 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2170. Up to 218 conditions per place. [2021-10-28 09:54:04,174 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 96 selfloop transitions, 14 changer transitions 30/194 dead transitions. [2021-10-28 09:54:04,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 194 transitions, 1969 flow [2021-10-28 09:54:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:54:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:54:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1012 transitions. [2021-10-28 09:54:04,178 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2021-10-28 09:54:04,178 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1012 transitions. [2021-10-28 09:54:04,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1012 transitions. [2021-10-28 09:54:04,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:04,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1012 transitions. [2021-10-28 09:54:04,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.529411764705884) internal successors, (1012), 17 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,185 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,185 INFO L186 Difference]: Start difference. First operand has 239 places, 169 transitions, 1451 flow. Second operand 17 states and 1012 transitions. [2021-10-28 09:54:04,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 194 transitions, 1969 flow [2021-10-28 09:54:04,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 194 transitions, 1876 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-10-28 09:54:04,220 INFO L242 Difference]: Finished difference. Result has 246 places, 160 transitions, 1306 flow [2021-10-28 09:54:04,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1306, PETRI_PLACES=246, PETRI_TRANSITIONS=160} [2021-10-28 09:54:04,220 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 164 predicate places. [2021-10-28 09:54:04,221 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 160 transitions, 1306 flow [2021-10-28 09:54:04,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,221 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:04,221 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] [2021-10-28 09:54:04,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 09:54:04,222 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash 820857339, now seen corresponding path program 12 times [2021-10-28 09:54:04,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:04,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2428274] [2021-10-28 09:54:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:04,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:04,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:04,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2428274] [2021-10-28 09:54:04,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2428274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:04,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:04,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:04,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535980878] [2021-10-28 09:54:04,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:04,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:04,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:04,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 160 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:04,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:04,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:04,672 INFO L129 PetriNetUnfolder]: 82/441 cut-off events. [2021-10-28 09:54:04,672 INFO L130 PetriNetUnfolder]: For 2357/2377 co-relation queries the response was YES. [2021-10-28 09:54:04,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 441 events. 82/441 cut-off events. For 2357/2377 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2424 event pairs, 39 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 1976. Up to 211 conditions per place. [2021-10-28 09:54:04,682 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 86 selfloop transitions, 3 changer transitions 33/176 dead transitions. [2021-10-28 09:54:04,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 176 transitions, 1679 flow [2021-10-28 09:54:04,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1059 transitions. [2021-10-28 09:54:04,685 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6394927536231884 [2021-10-28 09:54:04,685 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1059 transitions. [2021-10-28 09:54:04,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1059 transitions. [2021-10-28 09:54:04,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:04,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1059 transitions. [2021-10-28 09:54:04,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.833333333333336) internal successors, (1059), 18 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,692 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,692 INFO L186 Difference]: Start difference. First operand has 246 places, 160 transitions, 1306 flow. Second operand 18 states and 1059 transitions. [2021-10-28 09:54:04,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 176 transitions, 1679 flow [2021-10-28 09:54:04,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 176 transitions, 1561 flow, removed 25 selfloop flow, removed 22 redundant places. [2021-10-28 09:54:04,722 INFO L242 Difference]: Finished difference. Result has 230 places, 140 transitions, 1028 flow [2021-10-28 09:54:04,723 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1028, PETRI_PLACES=230, PETRI_TRANSITIONS=140} [2021-10-28 09:54:04,723 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-28 09:54:04,723 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 140 transitions, 1028 flow [2021-10-28 09:54:04,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,724 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:04,724 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] [2021-10-28 09:54:04,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 09:54:04,726 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1298365229, now seen corresponding path program 13 times [2021-10-28 09:54:04,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:04,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437610888] [2021-10-28 09:54:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:04,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:04,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:04,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437610888] [2021-10-28 09:54:04,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437610888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:04,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:04,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:04,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092709587] [2021-10-28 09:54:04,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:04,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:04,850 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:04,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 140 transitions, 1028 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:04,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:04,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:04,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:05,216 INFO L129 PetriNetUnfolder]: 88/460 cut-off events. [2021-10-28 09:54:05,217 INFO L130 PetriNetUnfolder]: For 2339/2356 co-relation queries the response was YES. [2021-10-28 09:54:05,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 460 events. 88/460 cut-off events. For 2339/2356 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2583 event pairs, 34 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 2009. Up to 198 conditions per place. [2021-10-28 09:54:05,231 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 90 selfloop transitions, 19 changer transitions 28/191 dead transitions. [2021-10-28 09:54:05,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 191 transitions, 1822 flow [2021-10-28 09:54:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:54:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 09:54:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1295 transitions. [2021-10-28 09:54:05,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6398221343873518 [2021-10-28 09:54:05,236 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1295 transitions. [2021-10-28 09:54:05,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1295 transitions. [2021-10-28 09:54:05,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:05,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1295 transitions. [2021-10-28 09:54:05,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.86363636363637) internal successors, (1295), 22 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,246 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,246 INFO L186 Difference]: Start difference. First operand has 230 places, 140 transitions, 1028 flow. Second operand 22 states and 1295 transitions. [2021-10-28 09:54:05,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 191 transitions, 1822 flow [2021-10-28 09:54:05,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 191 transitions, 1607 flow, removed 39 selfloop flow, removed 23 redundant places. [2021-10-28 09:54:05,270 INFO L242 Difference]: Finished difference. Result has 214 places, 151 transitions, 1136 flow [2021-10-28 09:54:05,271 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1136, PETRI_PLACES=214, PETRI_TRANSITIONS=151} [2021-10-28 09:54:05,271 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 132 predicate places. [2021-10-28 09:54:05,272 INFO L470 AbstractCegarLoop]: Abstraction has has 214 places, 151 transitions, 1136 flow [2021-10-28 09:54:05,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,272 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:05,272 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] [2021-10-28 09:54:05,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 09:54:05,273 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1557370829, now seen corresponding path program 14 times [2021-10-28 09:54:05,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:05,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626861154] [2021-10-28 09:54:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:05,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:05,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:05,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626861154] [2021-10-28 09:54:05,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626861154] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:05,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:05,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:05,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937428453] [2021-10-28 09:54:05,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:05,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:05,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:05,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:05,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 151 transitions, 1136 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:05,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:05,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:05,762 INFO L129 PetriNetUnfolder]: 85/444 cut-off events. [2021-10-28 09:54:05,763 INFO L130 PetriNetUnfolder]: For 2049/2066 co-relation queries the response was YES. [2021-10-28 09:54:05,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 444 events. 85/444 cut-off events. For 2049/2066 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2445 event pairs, 34 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1963. Up to 196 conditions per place. [2021-10-28 09:54:05,774 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 87 selfloop transitions, 21 changer transitions 29/191 dead transitions. [2021-10-28 09:54:05,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 191 transitions, 1810 flow [2021-10-28 09:54:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:54:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-28 09:54:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1239 transitions. [2021-10-28 09:54:05,777 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-28 09:54:05,777 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1239 transitions. [2021-10-28 09:54:05,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1239 transitions. [2021-10-28 09:54:05,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:05,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1239 transitions. [2021-10-28 09:54:05,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.0) internal successors, (1239), 21 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,784 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,785 INFO L186 Difference]: Start difference. First operand has 214 places, 151 transitions, 1136 flow. Second operand 21 states and 1239 transitions. [2021-10-28 09:54:05,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 191 transitions, 1810 flow [2021-10-28 09:54:05,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 191 transitions, 1682 flow, removed 58 selfloop flow, removed 11 redundant places. [2021-10-28 09:54:05,809 INFO L242 Difference]: Finished difference. Result has 223 places, 153 transitions, 1207 flow [2021-10-28 09:54:05,809 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1207, PETRI_PLACES=223, PETRI_TRANSITIONS=153} [2021-10-28 09:54:05,809 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 141 predicate places. [2021-10-28 09:54:05,810 INFO L470 AbstractCegarLoop]: Abstraction has has 223 places, 153 transitions, 1207 flow [2021-10-28 09:54:05,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,810 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:05,810 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] [2021-10-28 09:54:05,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 09:54:05,811 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:05,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:05,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1253576493, now seen corresponding path program 15 times [2021-10-28 09:54:05,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:05,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288588124] [2021-10-28 09:54:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:05,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:05,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:05,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288588124] [2021-10-28 09:54:05,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288588124] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:05,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:05,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:05,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025604758] [2021-10-28 09:54:05,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:05,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:05,927 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:05,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 153 transitions, 1207 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:05,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:05,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:05,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:06,193 INFO L129 PetriNetUnfolder]: 80/445 cut-off events. [2021-10-28 09:54:06,193 INFO L130 PetriNetUnfolder]: For 2204/2221 co-relation queries the response was YES. [2021-10-28 09:54:06,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 445 events. 80/445 cut-off events. For 2204/2221 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2498 event pairs, 32 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 1978. Up to 201 conditions per place. [2021-10-28 09:54:06,203 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 85 selfloop transitions, 22 changer transitions 25/186 dead transitions. [2021-10-28 09:54:06,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 186 transitions, 1816 flow [2021-10-28 09:54:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:54:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:54:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 953 transitions. [2021-10-28 09:54:06,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6474184782608695 [2021-10-28 09:54:06,205 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 953 transitions. [2021-10-28 09:54:06,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 953 transitions. [2021-10-28 09:54:06,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:06,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 953 transitions. [2021-10-28 09:54:06,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.5625) internal successors, (953), 16 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,211 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,211 INFO L186 Difference]: Start difference. First operand has 223 places, 153 transitions, 1207 flow. Second operand 16 states and 953 transitions. [2021-10-28 09:54:06,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 186 transitions, 1816 flow [2021-10-28 09:54:06,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 186 transitions, 1667 flow, removed 49 selfloop flow, removed 18 redundant places. [2021-10-28 09:54:06,236 INFO L242 Difference]: Finished difference. Result has 216 places, 158 transitions, 1256 flow [2021-10-28 09:54:06,237 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1256, PETRI_PLACES=216, PETRI_TRANSITIONS=158} [2021-10-28 09:54:06,237 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 134 predicate places. [2021-10-28 09:54:06,237 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 158 transitions, 1256 flow [2021-10-28 09:54:06,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,238 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:06,238 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] [2021-10-28 09:54:06,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 09:54:06,238 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash 968773801, now seen corresponding path program 16 times [2021-10-28 09:54:06,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:06,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688693224] [2021-10-28 09:54:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:06,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:06,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:06,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688693224] [2021-10-28 09:54:06,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688693224] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:06,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:06,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:06,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467531285] [2021-10-28 09:54:06,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:06,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:06,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:06,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 158 transitions, 1256 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:06,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:06,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:06,615 INFO L129 PetriNetUnfolder]: 73/405 cut-off events. [2021-10-28 09:54:06,616 INFO L130 PetriNetUnfolder]: For 1876/1893 co-relation queries the response was YES. [2021-10-28 09:54:06,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 405 events. 73/405 cut-off events. For 1876/1893 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2166 event pairs, 32 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1809. Up to 195 conditions per place. [2021-10-28 09:54:06,622 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 82 selfloop transitions, 10 changer transitions 30/176 dead transitions. [2021-10-28 09:54:06,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 176 transitions, 1641 flow [2021-10-28 09:54:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1060 transitions. [2021-10-28 09:54:06,624 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6400966183574879 [2021-10-28 09:54:06,624 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1060 transitions. [2021-10-28 09:54:06,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1060 transitions. [2021-10-28 09:54:06,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:06,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1060 transitions. [2021-10-28 09:54:06,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.888888888888886) internal successors, (1060), 18 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,631 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,631 INFO L186 Difference]: Start difference. First operand has 216 places, 158 transitions, 1256 flow. Second operand 18 states and 1060 transitions. [2021-10-28 09:54:06,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 176 transitions, 1641 flow [2021-10-28 09:54:06,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 176 transitions, 1539 flow, removed 29 selfloop flow, removed 9 redundant places. [2021-10-28 09:54:06,655 INFO L242 Difference]: Finished difference. Result has 224 places, 143 transitions, 1058 flow [2021-10-28 09:54:06,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1058, PETRI_PLACES=224, PETRI_TRANSITIONS=143} [2021-10-28 09:54:06,655 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 142 predicate places. [2021-10-28 09:54:06,656 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 143 transitions, 1058 flow [2021-10-28 09:54:06,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,656 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:06,656 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] [2021-10-28 09:54:06,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 09:54:06,657 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:06,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1141183217, now seen corresponding path program 17 times [2021-10-28 09:54:06,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:06,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913989216] [2021-10-28 09:54:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:06,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:06,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:06,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913989216] [2021-10-28 09:54:06,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913989216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:06,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:06,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:06,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872452852] [2021-10-28 09:54:06,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:06,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:06,763 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:06,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 143 transitions, 1058 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:06,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:06,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:06,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:07,064 INFO L129 PetriNetUnfolder]: 76/416 cut-off events. [2021-10-28 09:54:07,064 INFO L130 PetriNetUnfolder]: For 1938/1955 co-relation queries the response was YES. [2021-10-28 09:54:07,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 416 events. 76/416 cut-off events. For 1938/1955 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2252 event pairs, 32 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 1832. Up to 195 conditions per place. [2021-10-28 09:54:07,070 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 80 selfloop transitions, 20 changer transitions 23/177 dead transitions. [2021-10-28 09:54:07,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 177 transitions, 1646 flow [2021-10-28 09:54:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1065 transitions. [2021-10-28 09:54:07,073 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6431159420289855 [2021-10-28 09:54:07,073 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1065 transitions. [2021-10-28 09:54:07,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1065 transitions. [2021-10-28 09:54:07,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:07,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1065 transitions. [2021-10-28 09:54:07,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.166666666666664) internal successors, (1065), 18 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,079 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,080 INFO L186 Difference]: Start difference. First operand has 224 places, 143 transitions, 1058 flow. Second operand 18 states and 1065 transitions. [2021-10-28 09:54:07,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 177 transitions, 1646 flow [2021-10-28 09:54:07,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 177 transitions, 1500 flow, removed 25 selfloop flow, removed 18 redundant places. [2021-10-28 09:54:07,103 INFO L242 Difference]: Finished difference. Result has 209 places, 152 transitions, 1171 flow [2021-10-28 09:54:07,104 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1171, PETRI_PLACES=209, PETRI_TRANSITIONS=152} [2021-10-28 09:54:07,104 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 127 predicate places. [2021-10-28 09:54:07,104 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 152 transitions, 1171 flow [2021-10-28 09:54:07,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:07,105 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] [2021-10-28 09:54:07,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 09:54:07,106 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1725666035, now seen corresponding path program 18 times [2021-10-28 09:54:07,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:07,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643364041] [2021-10-28 09:54:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:07,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:07,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:07,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643364041] [2021-10-28 09:54:07,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643364041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:07,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:07,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:07,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905800596] [2021-10-28 09:54:07,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:07,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:07,225 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:07,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 152 transitions, 1171 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:07,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:07,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:07,532 INFO L129 PetriNetUnfolder]: 73/428 cut-off events. [2021-10-28 09:54:07,533 INFO L130 PetriNetUnfolder]: For 1757/1774 co-relation queries the response was YES. [2021-10-28 09:54:07,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 428 events. 73/428 cut-off events. For 1757/1774 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2350 event pairs, 30 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 1807. Up to 195 conditions per place. [2021-10-28 09:54:07,539 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 81 selfloop transitions, 22 changer transitions 24/181 dead transitions. [2021-10-28 09:54:07,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 181 transitions, 1693 flow [2021-10-28 09:54:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:54:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:54:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1009 transitions. [2021-10-28 09:54:07,541 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6451406649616368 [2021-10-28 09:54:07,542 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1009 transitions. [2021-10-28 09:54:07,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1009 transitions. [2021-10-28 09:54:07,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:07,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1009 transitions. [2021-10-28 09:54:07,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.35294117647059) internal successors, (1009), 17 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,547 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,547 INFO L186 Difference]: Start difference. First operand has 209 places, 152 transitions, 1171 flow. Second operand 17 states and 1009 transitions. [2021-10-28 09:54:07,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 181 transitions, 1693 flow [2021-10-28 09:54:07,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 181 transitions, 1612 flow, removed 36 selfloop flow, removed 5 redundant places. [2021-10-28 09:54:07,570 INFO L242 Difference]: Finished difference. Result has 221 places, 156 transitions, 1253 flow [2021-10-28 09:54:07,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1253, PETRI_PLACES=221, PETRI_TRANSITIONS=156} [2021-10-28 09:54:07,570 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 139 predicate places. [2021-10-28 09:54:07,570 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 156 transitions, 1253 flow [2021-10-28 09:54:07,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,571 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:07,571 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] [2021-10-28 09:54:07,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 09:54:07,571 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:07,572 INFO L85 PathProgramCache]: Analyzing trace with hash -100897857, now seen corresponding path program 19 times [2021-10-28 09:54:07,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:07,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024475282] [2021-10-28 09:54:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:07,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:07,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:07,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024475282] [2021-10-28 09:54:07,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024475282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:07,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:07,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:07,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418388974] [2021-10-28 09:54:07,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:07,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:07,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:07,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:07,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 156 transitions, 1253 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:07,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:07,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:07,966 INFO L129 PetriNetUnfolder]: 69/407 cut-off events. [2021-10-28 09:54:07,966 INFO L130 PetriNetUnfolder]: For 1743/1760 co-relation queries the response was YES. [2021-10-28 09:54:07,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 407 events. 69/407 cut-off events. For 1743/1760 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2203 event pairs, 30 based on Foata normal form. 1/404 useless extension candidates. Maximal degree in co-relation 1768. Up to 195 conditions per place. [2021-10-28 09:54:07,973 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 80 selfloop transitions, 13 changer transitions 29/176 dead transitions. [2021-10-28 09:54:07,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 176 transitions, 1663 flow [2021-10-28 09:54:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1062 transitions. [2021-10-28 09:54:07,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-28 09:54:07,976 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1062 transitions. [2021-10-28 09:54:07,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1062 transitions. [2021-10-28 09:54:07,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:07,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1062 transitions. [2021-10-28 09:54:07,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.0) internal successors, (1062), 18 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,982 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:07,982 INFO L186 Difference]: Start difference. First operand has 221 places, 156 transitions, 1253 flow. Second operand 18 states and 1062 transitions. [2021-10-28 09:54:07,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 176 transitions, 1663 flow [2021-10-28 09:54:08,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 176 transitions, 1556 flow, removed 33 selfloop flow, removed 8 redundant places. [2021-10-28 09:54:08,007 INFO L242 Difference]: Finished difference. Result has 230 places, 147 transitions, 1119 flow [2021-10-28 09:54:08,008 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1119, PETRI_PLACES=230, PETRI_TRANSITIONS=147} [2021-10-28 09:54:08,008 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-28 09:54:08,008 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 147 transitions, 1119 flow [2021-10-28 09:54:08,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,009 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:08,009 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:08,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 09:54:08,009 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash 78205775, now seen corresponding path program 20 times [2021-10-28 09:54:08,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:08,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037680403] [2021-10-28 09:54:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:08,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:08,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:08,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037680403] [2021-10-28 09:54:08,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037680403] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:08,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:08,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:08,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134994889] [2021-10-28 09:54:08,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:08,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:08,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:08,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 147 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:08,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:08,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:08,368 INFO L129 PetriNetUnfolder]: 63/346 cut-off events. [2021-10-28 09:54:08,368 INFO L130 PetriNetUnfolder]: For 1575/1592 co-relation queries the response was YES. [2021-10-28 09:54:08,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 346 events. 63/346 cut-off events. For 1575/1592 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1755 event pairs, 30 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 1529. Up to 176 conditions per place. [2021-10-28 09:54:08,373 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 67 selfloop transitions, 0 changer transitions 43/158 dead transitions. [2021-10-28 09:54:08,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 158 transitions, 1392 flow [2021-10-28 09:54:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:54:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:54:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 998 transitions. [2021-10-28 09:54:08,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6381074168797954 [2021-10-28 09:54:08,376 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 998 transitions. [2021-10-28 09:54:08,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 998 transitions. [2021-10-28 09:54:08,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:08,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 998 transitions. [2021-10-28 09:54:08,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.705882352941174) internal successors, (998), 17 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,382 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,382 INFO L186 Difference]: Start difference. First operand has 230 places, 147 transitions, 1119 flow. Second operand 17 states and 998 transitions. [2021-10-28 09:54:08,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 158 transitions, 1392 flow [2021-10-28 09:54:08,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 158 transitions, 1288 flow, removed 27 selfloop flow, removed 21 redundant places. [2021-10-28 09:54:08,403 INFO L242 Difference]: Finished difference. Result has 211 places, 115 transitions, 785 flow [2021-10-28 09:54:08,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=785, PETRI_PLACES=211, PETRI_TRANSITIONS=115} [2021-10-28 09:54:08,403 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 129 predicate places. [2021-10-28 09:54:08,403 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 115 transitions, 785 flow [2021-10-28 09:54:08,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,404 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:08,404 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] [2021-10-28 09:54:08,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 09:54:08,404 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:08,405 INFO L85 PathProgramCache]: Analyzing trace with hash 68284651, now seen corresponding path program 7 times [2021-10-28 09:54:08,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:08,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505404995] [2021-10-28 09:54:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:08,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:08,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:08,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505404995] [2021-10-28 09:54:08,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505404995] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:08,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:08,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:08,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323186034] [2021-10-28 09:54:08,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:08,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:08,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:08,507 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:08,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 115 transitions, 785 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:08,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:08,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:08,803 INFO L129 PetriNetUnfolder]: 60/318 cut-off events. [2021-10-28 09:54:08,803 INFO L130 PetriNetUnfolder]: For 1535/1540 co-relation queries the response was YES. [2021-10-28 09:54:08,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 318 events. 60/318 cut-off events. For 1535/1540 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1548 event pairs, 7 based on Foata normal form. 1/318 useless extension candidates. Maximal degree in co-relation 1365. Up to 55 conditions per place. [2021-10-28 09:54:08,808 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 64 selfloop transitions, 30 changer transitions 25/167 dead transitions. [2021-10-28 09:54:08,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 167 transitions, 1607 flow [2021-10-28 09:54:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:54:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 09:54:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1288 transitions. [2021-10-28 09:54:08,811 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2021-10-28 09:54:08,811 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1288 transitions. [2021-10-28 09:54:08,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1288 transitions. [2021-10-28 09:54:08,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:08,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1288 transitions. [2021-10-28 09:54:08,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.54545454545455) internal successors, (1288), 22 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,818 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,818 INFO L186 Difference]: Start difference. First operand has 211 places, 115 transitions, 785 flow. Second operand 22 states and 1288 transitions. [2021-10-28 09:54:08,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 167 transitions, 1607 flow [2021-10-28 09:54:08,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 167 transitions, 1584 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-10-28 09:54:08,834 INFO L242 Difference]: Finished difference. Result has 192 places, 120 transitions, 951 flow [2021-10-28 09:54:08,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=951, PETRI_PLACES=192, PETRI_TRANSITIONS=120} [2021-10-28 09:54:08,834 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 110 predicate places. [2021-10-28 09:54:08,834 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 120 transitions, 951 flow [2021-10-28 09:54:08,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:08,835 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] [2021-10-28 09:54:08,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 09:54:08,835 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2021917595, now seen corresponding path program 8 times [2021-10-28 09:54:08,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:08,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12250477] [2021-10-28 09:54:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:08,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:08,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:08,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12250477] [2021-10-28 09:54:08,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12250477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:08,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:08,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:08,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584564336] [2021-10-28 09:54:08,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:08,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:08,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:08,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 120 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:08,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:08,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:08,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:09,197 INFO L129 PetriNetUnfolder]: 55/295 cut-off events. [2021-10-28 09:54:09,197 INFO L130 PetriNetUnfolder]: For 2229/2241 co-relation queries the response was YES. [2021-10-28 09:54:09,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 295 events. 55/295 cut-off events. For 2229/2241 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1358 event pairs, 7 based on Foata normal form. 3/297 useless extension candidates. Maximal degree in co-relation 1483. Up to 60 conditions per place. [2021-10-28 09:54:09,202 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 58 selfloop transitions, 32 changer transitions 21/159 dead transitions. [2021-10-28 09:54:09,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 159 transitions, 1703 flow [2021-10-28 09:54:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:54:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:54:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 946 transitions. [2021-10-28 09:54:09,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6426630434782609 [2021-10-28 09:54:09,209 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 946 transitions. [2021-10-28 09:54:09,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 946 transitions. [2021-10-28 09:54:09,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:09,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 946 transitions. [2021-10-28 09:54:09,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.125) internal successors, (946), 16 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,215 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,215 INFO L186 Difference]: Start difference. First operand has 192 places, 120 transitions, 951 flow. Second operand 16 states and 946 transitions. [2021-10-28 09:54:09,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 159 transitions, 1703 flow [2021-10-28 09:54:09,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 159 transitions, 1548 flow, removed 64 selfloop flow, removed 12 redundant places. [2021-10-28 09:54:09,235 INFO L242 Difference]: Finished difference. Result has 190 places, 125 transitions, 1050 flow [2021-10-28 09:54:09,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1050, PETRI_PLACES=190, PETRI_TRANSITIONS=125} [2021-10-28 09:54:09,236 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 108 predicate places. [2021-10-28 09:54:09,236 INFO L470 AbstractCegarLoop]: Abstraction has has 190 places, 125 transitions, 1050 flow [2021-10-28 09:54:09,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:09,236 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] [2021-10-28 09:54:09,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-28 09:54:09,237 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:09,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash 13810053, now seen corresponding path program 9 times [2021-10-28 09:54:09,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:09,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543917778] [2021-10-28 09:54:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:09,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:09,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:09,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543917778] [2021-10-28 09:54:09,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543917778] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:09,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:09,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:09,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019450395] [2021-10-28 09:54:09,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:09,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:09,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:09,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:09,382 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:09,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 125 transitions, 1050 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:09,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:09,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:09,624 INFO L129 PetriNetUnfolder]: 48/273 cut-off events. [2021-10-28 09:54:09,625 INFO L130 PetriNetUnfolder]: For 1861/1877 co-relation queries the response was YES. [2021-10-28 09:54:09,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 273 events. 48/273 cut-off events. For 1861/1877 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1197 event pairs, 7 based on Foata normal form. 7/279 useless extension candidates. Maximal degree in co-relation 1327. Up to 54 conditions per place. [2021-10-28 09:54:09,629 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 54 selfloop transitions, 20 changer transitions 27/149 dead transitions. [2021-10-28 09:54:09,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 149 transitions, 1512 flow [2021-10-28 09:54:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1053 transitions. [2021-10-28 09:54:09,633 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2021-10-28 09:54:09,634 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1053 transitions. [2021-10-28 09:54:09,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1053 transitions. [2021-10-28 09:54:09,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:09,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1053 transitions. [2021-10-28 09:54:09,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.5) internal successors, (1053), 18 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,640 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,640 INFO L186 Difference]: Start difference. First operand has 190 places, 125 transitions, 1050 flow. Second operand 18 states and 1053 transitions. [2021-10-28 09:54:09,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 149 transitions, 1512 flow [2021-10-28 09:54:09,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 149 transitions, 1378 flow, removed 35 selfloop flow, removed 9 redundant places. [2021-10-28 09:54:09,659 INFO L242 Difference]: Finished difference. Result has 198 places, 110 transitions, 803 flow [2021-10-28 09:54:09,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=803, PETRI_PLACES=198, PETRI_TRANSITIONS=110} [2021-10-28 09:54:09,660 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 116 predicate places. [2021-10-28 09:54:09,660 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 110 transitions, 803 flow [2021-10-28 09:54:09,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:09,661 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] [2021-10-28 09:54:09,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-28 09:54:09,661 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:09,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1899785425, now seen corresponding path program 10 times [2021-10-28 09:54:09,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:09,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851816588] [2021-10-28 09:54:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:09,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:09,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:09,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851816588] [2021-10-28 09:54:09,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851816588] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:09,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:09,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:09,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78851571] [2021-10-28 09:54:09,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:09,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:09,772 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:09,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 110 transitions, 803 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:09,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:09,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:09,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:10,033 INFO L129 PetriNetUnfolder]: 51/269 cut-off events. [2021-10-28 09:54:10,033 INFO L130 PetriNetUnfolder]: For 1875/1886 co-relation queries the response was YES. [2021-10-28 09:54:10,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 269 events. 51/269 cut-off events. For 1875/1886 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1143 event pairs, 14 based on Foata normal form. 3/270 useless extension candidates. Maximal degree in co-relation 1341. Up to 69 conditions per place. [2021-10-28 09:54:10,038 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 49 selfloop transitions, 28 changer transitions 19/144 dead transitions. [2021-10-28 09:54:10,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 144 transitions, 1424 flow [2021-10-28 09:54:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1061 transitions. [2021-10-28 09:54:10,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6407004830917874 [2021-10-28 09:54:10,044 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1061 transitions. [2021-10-28 09:54:10,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1061 transitions. [2021-10-28 09:54:10,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:10,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1061 transitions. [2021-10-28 09:54:10,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.94444444444444) internal successors, (1061), 18 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,051 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,051 INFO L186 Difference]: Start difference. First operand has 198 places, 110 transitions, 803 flow. Second operand 18 states and 1061 transitions. [2021-10-28 09:54:10,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 144 transitions, 1424 flow [2021-10-28 09:54:10,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 144 transitions, 1249 flow, removed 32 selfloop flow, removed 19 redundant places. [2021-10-28 09:54:10,069 INFO L242 Difference]: Finished difference. Result has 182 places, 119 transitions, 909 flow [2021-10-28 09:54:10,069 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=909, PETRI_PLACES=182, PETRI_TRANSITIONS=119} [2021-10-28 09:54:10,069 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 100 predicate places. [2021-10-28 09:54:10,070 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 119 transitions, 909 flow [2021-10-28 09:54:10,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:10,070 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] [2021-10-28 09:54:10,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-28 09:54:10,071 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash -138731753, now seen corresponding path program 11 times [2021-10-28 09:54:10,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:10,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277332057] [2021-10-28 09:54:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:10,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:10,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:10,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277332057] [2021-10-28 09:54:10,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277332057] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:10,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:10,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:10,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241568873] [2021-10-28 09:54:10,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:10,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:10,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:10,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:10,191 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:10,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 119 transitions, 909 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:10,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:10,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:10,429 INFO L129 PetriNetUnfolder]: 48/264 cut-off events. [2021-10-28 09:54:10,429 INFO L130 PetriNetUnfolder]: For 1439/1450 co-relation queries the response was YES. [2021-10-28 09:54:10,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 264 events. 48/264 cut-off events. For 1439/1450 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1138 event pairs, 12 based on Foata normal form. 3/265 useless extension candidates. Maximal degree in co-relation 1254. Up to 67 conditions per place. [2021-10-28 09:54:10,433 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 50 selfloop transitions, 30 changer transitions 20/148 dead transitions. [2021-10-28 09:54:10,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 148 transitions, 1461 flow [2021-10-28 09:54:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:54:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:54:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1005 transitions. [2021-10-28 09:54:10,437 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6425831202046036 [2021-10-28 09:54:10,437 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1005 transitions. [2021-10-28 09:54:10,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1005 transitions. [2021-10-28 09:54:10,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:10,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1005 transitions. [2021-10-28 09:54:10,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.11764705882353) internal successors, (1005), 17 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,443 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,443 INFO L186 Difference]: Start difference. First operand has 182 places, 119 transitions, 909 flow. Second operand 17 states and 1005 transitions. [2021-10-28 09:54:10,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 148 transitions, 1461 flow [2021-10-28 09:54:10,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 148 transitions, 1378 flow, removed 33 selfloop flow, removed 6 redundant places. [2021-10-28 09:54:10,458 INFO L242 Difference]: Finished difference. Result has 193 places, 123 transitions, 1008 flow [2021-10-28 09:54:10,458 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1008, PETRI_PLACES=193, PETRI_TRANSITIONS=123} [2021-10-28 09:54:10,458 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 111 predicate places. [2021-10-28 09:54:10,459 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 123 transitions, 1008 flow [2021-10-28 09:54:10,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,459 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:10,459 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] [2021-10-28 09:54:10,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-28 09:54:10,460 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1749198423, now seen corresponding path program 12 times [2021-10-28 09:54:10,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:10,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135780855] [2021-10-28 09:54:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:10,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:10,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:10,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135780855] [2021-10-28 09:54:10,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135780855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:10,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:10,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:10,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824588138] [2021-10-28 09:54:10,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:10,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:10,572 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:10,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 123 transitions, 1008 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:10,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:10,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:10,810 INFO L129 PetriNetUnfolder]: 44/258 cut-off events. [2021-10-28 09:54:10,811 INFO L130 PetriNetUnfolder]: For 1499/1505 co-relation queries the response was YES. [2021-10-28 09:54:10,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 258 events. 44/258 cut-off events. For 1499/1505 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1089 event pairs, 14 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 1221. Up to 66 conditions per place. [2021-10-28 09:54:10,814 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 50 selfloop transitions, 20 changer transitions 26/144 dead transitions. [2021-10-28 09:54:10,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 144 transitions, 1439 flow [2021-10-28 09:54:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:54:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:54:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1002 transitions. [2021-10-28 09:54:10,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6406649616368286 [2021-10-28 09:54:10,816 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1002 transitions. [2021-10-28 09:54:10,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1002 transitions. [2021-10-28 09:54:10,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:10,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1002 transitions. [2021-10-28 09:54:10,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.94117647058823) internal successors, (1002), 17 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,822 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,822 INFO L186 Difference]: Start difference. First operand has 193 places, 123 transitions, 1008 flow. Second operand 17 states and 1002 transitions. [2021-10-28 09:54:10,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 144 transitions, 1439 flow [2021-10-28 09:54:10,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 144 transitions, 1346 flow, removed 22 selfloop flow, removed 8 redundant places. [2021-10-28 09:54:10,839 INFO L242 Difference]: Finished difference. Result has 200 places, 114 transitions, 862 flow [2021-10-28 09:54:10,839 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=862, PETRI_PLACES=200, PETRI_TRANSITIONS=114} [2021-10-28 09:54:10,839 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 118 predicate places. [2021-10-28 09:54:10,840 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 114 transitions, 862 flow [2021-10-28 09:54:10,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,840 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:10,840 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] [2021-10-28 09:54:10,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 09:54:10,840 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:10,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash 538441871, now seen corresponding path program 13 times [2021-10-28 09:54:10,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:10,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453002046] [2021-10-28 09:54:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:10,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:10,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:10,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453002046] [2021-10-28 09:54:10,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453002046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:10,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:10,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:10,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43267672] [2021-10-28 09:54:10,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:10,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:10,951 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:10,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 114 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:10,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:10,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:10,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:11,201 INFO L129 PetriNetUnfolder]: 37/223 cut-off events. [2021-10-28 09:54:11,201 INFO L130 PetriNetUnfolder]: For 1373/1384 co-relation queries the response was YES. [2021-10-28 09:54:11,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 223 events. 37/223 cut-off events. For 1373/1384 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 828 event pairs, 12 based on Foata normal form. 3/224 useless extension candidates. Maximal degree in co-relation 1008. Up to 63 conditions per place. [2021-10-28 09:54:11,204 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 40 selfloop transitions, 9 changer transitions 29/126 dead transitions. [2021-10-28 09:54:11,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 126 transitions, 1142 flow [2021-10-28 09:54:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1049 transitions. [2021-10-28 09:54:11,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6334541062801933 [2021-10-28 09:54:11,207 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1049 transitions. [2021-10-28 09:54:11,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1049 transitions. [2021-10-28 09:54:11,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:11,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1049 transitions. [2021-10-28 09:54:11,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.27777777777778) internal successors, (1049), 18 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,211 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,212 INFO L186 Difference]: Start difference. First operand has 200 places, 114 transitions, 862 flow. Second operand 18 states and 1049 transitions. [2021-10-28 09:54:11,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 126 transitions, 1142 flow [2021-10-28 09:54:11,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 126 transitions, 1010 flow, removed 26 selfloop flow, removed 21 redundant places. [2021-10-28 09:54:11,225 INFO L242 Difference]: Finished difference. Result has 185 places, 94 transitions, 552 flow [2021-10-28 09:54:11,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=552, PETRI_PLACES=185, PETRI_TRANSITIONS=94} [2021-10-28 09:54:11,225 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 103 predicate places. [2021-10-28 09:54:11,226 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 94 transitions, 552 flow [2021-10-28 09:54:11,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,226 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:11,226 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:11,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-28 09:54:11,227 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:11,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1243091695, now seen corresponding path program 14 times [2021-10-28 09:54:11,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:11,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266849351] [2021-10-28 09:54:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:11,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:11,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:11,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266849351] [2021-10-28 09:54:11,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266849351] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:11,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:11,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:11,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409164385] [2021-10-28 09:54:11,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:11,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:11,343 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:11,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 94 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:11,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:11,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:11,600 INFO L129 PetriNetUnfolder]: 31/205 cut-off events. [2021-10-28 09:54:11,601 INFO L130 PetriNetUnfolder]: For 921/922 co-relation queries the response was YES. [2021-10-28 09:54:11,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 205 events. 31/205 cut-off events. For 921/922 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 688 event pairs, 4 based on Foata normal form. 1/206 useless extension candidates. Maximal degree in co-relation 830. Up to 29 conditions per place. [2021-10-28 09:54:11,603 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 36 selfloop transitions, 21 changer transitions 25/130 dead transitions. [2021-10-28 09:54:11,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 130 transitions, 1118 flow [2021-10-28 09:54:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:54:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-28 09:54:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1228 transitions. [2021-10-28 09:54:11,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6356107660455487 [2021-10-28 09:54:11,606 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1228 transitions. [2021-10-28 09:54:11,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1228 transitions. [2021-10-28 09:54:11,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:11,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1228 transitions. [2021-10-28 09:54:11,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 58.476190476190474) internal successors, (1228), 21 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,611 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,611 INFO L186 Difference]: Start difference. First operand has 185 places, 94 transitions, 552 flow. Second operand 21 states and 1228 transitions. [2021-10-28 09:54:11,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 130 transitions, 1118 flow [2021-10-28 09:54:11,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 130 transitions, 900 flow, removed 33 selfloop flow, removed 24 redundant places. [2021-10-28 09:54:11,620 INFO L242 Difference]: Finished difference. Result has 166 places, 96 transitions, 552 flow [2021-10-28 09:54:11,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=552, PETRI_PLACES=166, PETRI_TRANSITIONS=96} [2021-10-28 09:54:11,621 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 84 predicate places. [2021-10-28 09:54:11,621 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 96 transitions, 552 flow [2021-10-28 09:54:11,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:11,622 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] [2021-10-28 09:54:11,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-28 09:54:11,624 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:11,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash 864875245, now seen corresponding path program 15 times [2021-10-28 09:54:11,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:11,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71454907] [2021-10-28 09:54:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:11,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:11,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:11,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71454907] [2021-10-28 09:54:11,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71454907] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:11,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:11,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:11,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783394631] [2021-10-28 09:54:11,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:11,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:11,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:11,733 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:11,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 96 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:11,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:11,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:11,956 INFO L129 PetriNetUnfolder]: 26/204 cut-off events. [2021-10-28 09:54:11,956 INFO L130 PetriNetUnfolder]: For 780/781 co-relation queries the response was YES. [2021-10-28 09:54:11,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 204 events. 26/204 cut-off events. For 780/781 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 715 event pairs, 2 based on Foata normal form. 1/205 useless extension candidates. Maximal degree in co-relation 796. Up to 33 conditions per place. [2021-10-28 09:54:11,959 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 34 selfloop transitions, 22 changer transitions 21/125 dead transitions. [2021-10-28 09:54:11,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 125 transitions, 1024 flow [2021-10-28 09:54:11,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:54:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:54:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 942 transitions. [2021-10-28 09:54:11,961 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6399456521739131 [2021-10-28 09:54:11,961 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 942 transitions. [2021-10-28 09:54:11,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 942 transitions. [2021-10-28 09:54:11,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:11,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 942 transitions. [2021-10-28 09:54:11,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.875) internal successors, (942), 16 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,968 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,968 INFO L186 Difference]: Start difference. First operand has 166 places, 96 transitions, 552 flow. Second operand 16 states and 942 transitions. [2021-10-28 09:54:11,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 125 transitions, 1024 flow [2021-10-28 09:54:11,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 125 transitions, 877 flow, removed 47 selfloop flow, removed 17 redundant places. [2021-10-28 09:54:11,976 INFO L242 Difference]: Finished difference. Result has 160 places, 101 transitions, 600 flow [2021-10-28 09:54:11,976 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=600, PETRI_PLACES=160, PETRI_TRANSITIONS=101} [2021-10-28 09:54:11,977 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 78 predicate places. [2021-10-28 09:54:11,977 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 101 transitions, 600 flow [2021-10-28 09:54:11,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:11,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:11,977 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] [2021-10-28 09:54:11,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-28 09:54:11,978 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1157209939, now seen corresponding path program 16 times [2021-10-28 09:54:11,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:11,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088687777] [2021-10-28 09:54:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:11,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:12,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:12,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088687777] [2021-10-28 09:54:12,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088687777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:12,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:12,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:12,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204152792] [2021-10-28 09:54:12,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:12,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:12,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:12,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 101 transitions, 600 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:12,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:12,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:12,319 INFO L129 PetriNetUnfolder]: 19/172 cut-off events. [2021-10-28 09:54:12,319 INFO L130 PetriNetUnfolder]: For 478/479 co-relation queries the response was YES. [2021-10-28 09:54:12,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 172 events. 19/172 cut-off events. For 478/479 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 490 event pairs, 2 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 635. Up to 27 conditions per place. [2021-10-28 09:54:12,321 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 31 selfloop transitions, 10 changer transitions 26/115 dead transitions. [2021-10-28 09:54:12,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 115 transitions, 857 flow [2021-10-28 09:54:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1049 transitions. [2021-10-28 09:54:12,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6334541062801933 [2021-10-28 09:54:12,323 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1049 transitions. [2021-10-28 09:54:12,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1049 transitions. [2021-10-28 09:54:12,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:12,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1049 transitions. [2021-10-28 09:54:12,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.27777777777778) internal successors, (1049), 18 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,327 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,328 INFO L186 Difference]: Start difference. First operand has 160 places, 101 transitions, 600 flow. Second operand 18 states and 1049 transitions. [2021-10-28 09:54:12,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 115 transitions, 857 flow [2021-10-28 09:54:12,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 115 transitions, 759 flow, removed 27 selfloop flow, removed 9 redundant places. [2021-10-28 09:54:12,335 INFO L242 Difference]: Finished difference. Result has 168 places, 86 transitions, 406 flow [2021-10-28 09:54:12,335 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=406, PETRI_PLACES=168, PETRI_TRANSITIONS=86} [2021-10-28 09:54:12,335 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 86 predicate places. [2021-10-28 09:54:12,336 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 86 transitions, 406 flow [2021-10-28 09:54:12,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,336 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:12,336 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] [2021-10-28 09:54:12,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-28 09:54:12,337 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2082622499, now seen corresponding path program 17 times [2021-10-28 09:54:12,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:12,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067890577] [2021-10-28 09:54:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:12,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:12,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:12,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067890577] [2021-10-28 09:54:12,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067890577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:12,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:12,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:12,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097925423] [2021-10-28 09:54:12,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:12,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:12,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:12,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 86 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:12,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:12,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:12,666 INFO L129 PetriNetUnfolder]: 22/172 cut-off events. [2021-10-28 09:54:12,667 INFO L130 PetriNetUnfolder]: For 537/538 co-relation queries the response was YES. [2021-10-28 09:54:12,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 172 events. 22/172 cut-off events. For 537/538 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 490 event pairs, 2 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 644. Up to 27 conditions per place. [2021-10-28 09:54:12,670 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 29 selfloop transitions, 20 changer transitions 19/116 dead transitions. [2021-10-28 09:54:12,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 116 transitions, 858 flow [2021-10-28 09:54:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1054 transitions. [2021-10-28 09:54:12,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6364734299516909 [2021-10-28 09:54:12,672 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1054 transitions. [2021-10-28 09:54:12,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1054 transitions. [2021-10-28 09:54:12,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:12,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1054 transitions. [2021-10-28 09:54:12,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.55555555555556) internal successors, (1054), 18 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,677 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,677 INFO L186 Difference]: Start difference. First operand has 168 places, 86 transitions, 406 flow. Second operand 18 states and 1054 transitions. [2021-10-28 09:54:12,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 116 transitions, 858 flow [2021-10-28 09:54:12,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 116 transitions, 712 flow, removed 25 selfloop flow, removed 18 redundant places. [2021-10-28 09:54:12,685 INFO L242 Difference]: Finished difference. Result has 153 places, 95 transitions, 517 flow [2021-10-28 09:54:12,685 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=517, PETRI_PLACES=153, PETRI_TRANSITIONS=95} [2021-10-28 09:54:12,685 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 71 predicate places. [2021-10-28 09:54:12,685 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 95 transitions, 517 flow [2021-10-28 09:54:12,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,686 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:12,686 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] [2021-10-28 09:54:12,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-28 09:54:12,686 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1324750551, now seen corresponding path program 18 times [2021-10-28 09:54:12,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:12,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326664266] [2021-10-28 09:54:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:12,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:12,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:12,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326664266] [2021-10-28 09:54:12,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326664266] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:12,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:12,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:12,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808777313] [2021-10-28 09:54:12,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:12,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:12,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:12,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:12,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:12,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 95 transitions, 517 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:12,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:12,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:12,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:13,025 INFO L129 PetriNetUnfolder]: 19/181 cut-off events. [2021-10-28 09:54:13,025 INFO L130 PetriNetUnfolder]: For 374/375 co-relation queries the response was YES. [2021-10-28 09:54:13,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 181 events. 19/181 cut-off events. For 374/375 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 555 event pairs, 0 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 619. Up to 27 conditions per place. [2021-10-28 09:54:13,027 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 30 selfloop transitions, 22 changer transitions 20/120 dead transitions. [2021-10-28 09:54:13,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 120 transitions, 905 flow [2021-10-28 09:54:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:54:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:54:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 998 transitions. [2021-10-28 09:54:13,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6381074168797954 [2021-10-28 09:54:13,029 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 998 transitions. [2021-10-28 09:54:13,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 998 transitions. [2021-10-28 09:54:13,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:13,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 998 transitions. [2021-10-28 09:54:13,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.705882352941174) internal successors, (998), 17 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,033 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,033 INFO L186 Difference]: Start difference. First operand has 153 places, 95 transitions, 517 flow. Second operand 17 states and 998 transitions. [2021-10-28 09:54:13,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 120 transitions, 905 flow [2021-10-28 09:54:13,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 120 transitions, 826 flow, removed 35 selfloop flow, removed 5 redundant places. [2021-10-28 09:54:13,040 INFO L242 Difference]: Finished difference. Result has 165 places, 99 transitions, 599 flow [2021-10-28 09:54:13,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=599, PETRI_PLACES=165, PETRI_TRANSITIONS=99} [2021-10-28 09:54:13,040 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 83 predicate places. [2021-10-28 09:54:13,040 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 99 transitions, 599 flow [2021-10-28 09:54:13,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:13,041 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] [2021-10-28 09:54:13,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-28 09:54:13,041 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:13,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash -720882079, now seen corresponding path program 19 times [2021-10-28 09:54:13,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:13,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432771124] [2021-10-28 09:54:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:13,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:13,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:13,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432771124] [2021-10-28 09:54:13,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432771124] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:13,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:13,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:13,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033943686] [2021-10-28 09:54:13,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:13,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:13,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:13,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 99 transitions, 599 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:13,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:13,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:13,380 INFO L129 PetriNetUnfolder]: 15/168 cut-off events. [2021-10-28 09:54:13,380 INFO L130 PetriNetUnfolder]: For 366/367 co-relation queries the response was YES. [2021-10-28 09:54:13,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 168 events. 15/168 cut-off events. For 366/367 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 474 event pairs, 0 based on Foata normal form. 1/169 useless extension candidates. Maximal degree in co-relation 594. Up to 27 conditions per place. [2021-10-28 09:54:13,382 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 29 selfloop transitions, 13 changer transitions 25/115 dead transitions. [2021-10-28 09:54:13,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 115 transitions, 883 flow [2021-10-28 09:54:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:54:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:54:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1051 transitions. [2021-10-28 09:54:13,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6346618357487923 [2021-10-28 09:54:13,385 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1051 transitions. [2021-10-28 09:54:13,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1051 transitions. [2021-10-28 09:54:13,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:13,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1051 transitions. [2021-10-28 09:54:13,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.388888888888886) internal successors, (1051), 18 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,389 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,389 INFO L186 Difference]: Start difference. First operand has 165 places, 99 transitions, 599 flow. Second operand 18 states and 1051 transitions. [2021-10-28 09:54:13,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 115 transitions, 883 flow [2021-10-28 09:54:13,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 115 transitions, 788 flow, removed 27 selfloop flow, removed 9 redundant places. [2021-10-28 09:54:13,396 INFO L242 Difference]: Finished difference. Result has 173 places, 90 transitions, 471 flow [2021-10-28 09:54:13,397 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=471, PETRI_PLACES=173, PETRI_TRANSITIONS=90} [2021-10-28 09:54:13,397 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 91 predicate places. [2021-10-28 09:54:13,397 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 90 transitions, 471 flow [2021-10-28 09:54:13,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:54:13,398 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] [2021-10-28 09:54:13,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-28 09:54:13,398 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:54:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1087779575, now seen corresponding path program 20 times [2021-10-28 09:54:13,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:13,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785746841] [2021-10-28 09:54:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:13,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:13,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:13,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785746841] [2021-10-28 09:54:13,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785746841] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:13,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:13,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:54:13,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307655186] [2021-10-28 09:54:13,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:54:13,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:54:13,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:54:13,501 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 09:54:13,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 90 transitions, 471 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:54:13,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 09:54:13,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:54:13,656 INFO L129 PetriNetUnfolder]: 9/112 cut-off events. [2021-10-28 09:54:13,656 INFO L130 PetriNetUnfolder]: For 223/224 co-relation queries the response was YES. [2021-10-28 09:54:13,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 112 events. 9/112 cut-off events. For 223/224 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2021-10-28 09:54:13,657 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 0 selfloop transitions, 0 changer transitions 84/84 dead transitions. [2021-10-28 09:54:13,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 84 transitions, 570 flow [2021-10-28 09:54:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:54:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:54:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 972 transitions. [2021-10-28 09:54:13,658 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6214833759590793 [2021-10-28 09:54:13,658 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 972 transitions. [2021-10-28 09:54:13,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 972 transitions. [2021-10-28 09:54:13,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:13,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 972 transitions. [2021-10-28 09:54:13,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 57.1764705882353) internal successors, (972), 17 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,662 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,663 INFO L186 Difference]: Start difference. First operand has 173 places, 90 transitions, 471 flow. Second operand 17 states and 972 transitions. [2021-10-28 09:54:13,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 84 transitions, 570 flow [2021-10-28 09:54:13,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 84 transitions, 476 flow, removed 22 selfloop flow, removed 20 redundant places. [2021-10-28 09:54:13,667 INFO L242 Difference]: Finished difference. Result has 142 places, 0 transitions, 0 flow [2021-10-28 09:54:13,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=142, PETRI_TRANSITIONS=0} [2021-10-28 09:54:13,668 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 60 predicate places. [2021-10-28 09:54:13,668 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 0 transitions, 0 flow [2021-10-28 09:54:13,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:13,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:54:13,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:54:13,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:54:13,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-28 09:54:13,674 INFO L731 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 2, 1] [2021-10-28 09:54:13,676 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:54:13,677 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:54:13,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:54:13 BasicIcfg [2021-10-28 09:54:13,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:54:13,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:54:13,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:54:13,680 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:54:13,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:51" (3/4) ... [2021-10-28 09:54:13,683 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:54:13,688 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:54:13,689 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:54:13,693 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 09:54:13,693 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:54:13,693 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:54:13,693 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:54:13,724 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:54:13,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:54:13,726 INFO L168 Benchmark]: Toolchain (without parser) took 23188.76 ms. Allocated memory was 90.2 MB in the beginning and 293.6 MB in the end (delta: 203.4 MB). Free memory was 53.8 MB in the beginning and 99.9 MB in the end (delta: -46.1 MB). Peak memory consumption was 157.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:54:13,726 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:54:13,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.65 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 53.6 MB in the beginning and 90.7 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:54:13,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.68 ms. Allocated memory is still 115.3 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:54:13,727 INFO L168 Benchmark]: Boogie Preprocessor took 23.55 ms. Allocated memory is still 115.3 MB. Free memory was 89.2 MB in the beginning and 88.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:54:13,728 INFO L168 Benchmark]: RCFGBuilder took 489.89 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 76.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:54:13,728 INFO L168 Benchmark]: TraceAbstraction took 22303.29 ms. Allocated memory was 115.3 MB in the beginning and 293.6 MB in the end (delta: 178.3 MB). Free memory was 75.6 MB in the beginning and 102.0 MB in the end (delta: -26.4 MB). Peak memory consumption was 153.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:54:13,728 INFO L168 Benchmark]: Witness Printer took 45.24 ms. Allocated memory is still 293.6 MB. Free memory was 102.0 MB in the beginning and 99.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:54:13,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.65 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 53.6 MB in the beginning and 90.7 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.68 ms. Allocated memory is still 115.3 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.55 ms. Allocated memory is still 115.3 MB. Free memory was 89.2 MB in the beginning and 88.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.89 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 76.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22303.29 ms. Allocated memory was 115.3 MB in the beginning and 293.6 MB in the end (delta: 178.3 MB). Free memory was 75.6 MB in the beginning and 102.0 MB in the end (delta: -26.4 MB). Peak memory consumption was 153.9 MB. Max. memory is 16.1 GB. * Witness Printer took 45.24 ms. Allocated memory is still 293.6 MB. Free memory was 102.0 MB in the beginning and 99.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.1s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 15.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1806 SDtfs, 1738 SDslu, 7675 SDs, 0 SdLazy, 5672 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1021 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3636 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1483occurred in iteration=20, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 3188 NumberOfCodeBlocks, 3188 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3141 ConstructedInterpolants, 0 QuantifiedInterpolants, 11811 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:54:13,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c37791e-5a29-4ce4-be58-9046ecd7c1e8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...