./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y --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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:27:05,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:27:05,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:27:05,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:27:05,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:27:05,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:27:05,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:27:05,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:27:05,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:27:05,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:27:05,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:27:05,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:27:05,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:27:05,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:27:05,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:27:05,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:27:05,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:27:05,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:27:05,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:27:05,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:27:05,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:27:05,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:27:05,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:27:05,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:27:05,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:27:05,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:27:05,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:27:05,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:27:05,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:27:05,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:27:05,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:27:05,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:27:05,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:27:05,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:27:05,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:27:05,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:27:05,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:27:05,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:27:05,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:27:05,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:27:05,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:27:05,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:27:05,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:27:05,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:27:05,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:27:05,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:27:05,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:27:05,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:27:05,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:27:05,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:27:05,279 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:27:05,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:27:05,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:27:05,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:27:05,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:27:05,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:27:05,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:27:05,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:27:05,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:27:05,283 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:27:05,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:27:05,284 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:27:05,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:27:05,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:27:05,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:27:05,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:27:05,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:05,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:27:05,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:27:05,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:27:05,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:27:05,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:27:05,289 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:27:05,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:27:05,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:27:05,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:27:05,291 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_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2021-11-13 18:27:05,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:27:05,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:27:05,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:27:05,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:27:05,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:27:05,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2021-11-13 18:27:05,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/data/3bbe9508a/777cc8073faf4a5197e7478d4a8a2cd6/FLAG3e3b734b0 [2021-11-13 18:27:06,731 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:27:06,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2021-11-13 18:27:06,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/data/3bbe9508a/777cc8073faf4a5197e7478d4a8a2cd6/FLAG3e3b734b0 [2021-11-13 18:27:06,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/data/3bbe9508a/777cc8073faf4a5197e7478d4a8a2cd6 [2021-11-13 18:27:06,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:27:06,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:27:06,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:06,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:27:06,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:27:06,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:06" (1/1) ... [2021-11-13 18:27:06,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3970f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:06, skipping insertion in model container [2021-11-13 18:27:06,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:06" (1/1) ... [2021-11-13 18:27:06,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:27:06,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:27:08,035 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_a83833a7-d11d-4005-8277-a82ad6192115/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2021-11-13 18:27:08,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:08,106 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:27:08,202 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_a83833a7-d11d-4005-8277-a82ad6192115/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2021-11-13 18:27:08,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:08,447 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:27:08,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08 WrapperNode [2021-11-13 18:27:08,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:08,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:27:08,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:27:08,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:27:08,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:27:08,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:27:08,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:27:08,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:27:08,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:27:08,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:27:08,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:27:08,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:27:08,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (1/1) ... [2021-11-13 18:27:08,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:08,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:27:08,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:27:08,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a83833a7-d11d-4005-8277-a82ad6192115/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:27:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:27:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:27:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-13 18:27:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:27:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:27:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:27:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-11-13 18:27:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-11-13 18:27:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:27:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:27:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:27:08,762 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 18:27:09,655 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:27:09,656 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:27:09,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:09 BoogieIcfgContainer [2021-11-13 18:27:09,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:27:09,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:27:09,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:27:09,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:27:09,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:27:06" (1/3) ... [2021-11-13 18:27:09,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5056068a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:09, skipping insertion in model container [2021-11-13 18:27:09,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:08" (2/3) ... [2021-11-13 18:27:09,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5056068a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:09, skipping insertion in model container [2021-11-13 18:27:09,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:09" (3/3) ... [2021-11-13 18:27:09,673 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2021-11-13 18:27:09,679 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 18:27:09,679 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:27:09,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-13 18:27:09,679 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 18:27:09,724 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,724 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,725 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,725 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,725 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,725 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,726 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,726 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,726 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,726 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,727 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,727 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,727 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,727 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,727 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,728 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,728 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,728 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,728 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,728 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,729 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,729 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,729 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,729 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,730 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,730 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,730 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,730 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,731 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,731 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,731 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,731 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,732 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,732 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,732 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,732 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,733 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,733 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,733 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,733 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,734 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,734 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,734 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,734 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,735 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,735 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,735 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,735 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,736 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,736 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,736 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,736 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,737 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,737 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,737 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,737 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,738 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,738 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,738 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,738 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,739 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,739 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,739 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,739 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,740 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,740 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,740 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,740 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,740 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,741 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,741 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,741 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,741 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,741 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,742 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,742 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,742 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,742 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,743 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,743 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,743 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,743 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,744 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,744 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,744 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,744 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,766 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,766 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,767 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,767 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,767 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,767 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,768 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,768 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,768 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,769 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,769 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,769 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,769 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,769 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,770 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,770 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,770 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,770 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,771 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,771 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,771 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,771 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,772 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,772 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,772 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,772 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,772 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,773 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,773 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,773 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,778 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,778 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,779 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,779 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,779 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,779 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,780 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,780 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,780 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,780 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,792 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,792 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,793 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,793 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,793 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,794 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,794 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,794 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,795 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,795 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:09,798 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-13 18:27:09,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:27:09,909 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:27:09,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-13 18:27:09,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 192 transitions, 400 flow [2021-11-13 18:27:10,078 INFO L129 PetriNetUnfolder]: 10/237 cut-off events. [2021-11-13 18:27:10,078 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-13 18:27:10,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 10/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 388 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2021-11-13 18:27:10,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 192 transitions, 400 flow [2021-11-13 18:27:10,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 178 transitions, 368 flow [2021-11-13 18:27:10,105 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2021-11-13 18:27:10,106 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:10,106 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:10,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:10,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -278919402, now seen corresponding path program 1 times [2021-11-13 18:27:10,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:10,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073457059] [2021-11-13 18:27:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:10,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:10,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:10,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073457059] [2021-11-13 18:27:10,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073457059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:10,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:10,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:27:10,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896715920] [2021-11-13 18:27:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:10,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:10,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:11,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 192 [2021-11-13 18:27:11,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 178 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:11,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:11,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 192 [2021-11-13 18:27:11,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:11,773 INFO L129 PetriNetUnfolder]: 361/1042 cut-off events. [2021-11-13 18:27:11,773 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-11-13 18:27:11,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 1042 events. 361/1042 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6062 event pairs, 216 based on Foata normal form. 20/1007 useless extension candidates. Maximal degree in co-relation 1486. Up to 397 conditions per place. [2021-11-13 18:27:11,799 INFO L132 encePairwiseOnDemand]: 170/192 looper letters, 53 selfloop transitions, 17 changer transitions 1/174 dead transitions. [2021-11-13 18:27:11,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 174 transitions, 502 flow [2021-11-13 18:27:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:27:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:27:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1111 transitions. [2021-11-13 18:27:11,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6429398148148148 [2021-11-13 18:27:11,836 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1111 transitions. [2021-11-13 18:27:11,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1111 transitions. [2021-11-13 18:27:11,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:11,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1111 transitions. [2021-11-13 18:27:11,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.44444444444444) internal successors, (1111), 9 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:11,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 192.0) internal successors, (1920), 10 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:11,881 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 192.0) internal successors, (1920), 10 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:11,884 INFO L186 Difference]: Start difference. First operand has 178 places, 178 transitions, 368 flow. Second operand 9 states and 1111 transitions. [2021-11-13 18:27:11,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 174 transitions, 502 flow [2021-11-13 18:27:11,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 174 transitions, 494 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-13 18:27:11,904 INFO L242 Difference]: Finished difference. Result has 176 places, 167 transitions, 379 flow [2021-11-13 18:27:11,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=379, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2021-11-13 18:27:11,913 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, -2 predicate places. [2021-11-13 18:27:11,913 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 379 flow [2021-11-13 18:27:11,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:11,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:11,915 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:11,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:27:11,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1223044193, now seen corresponding path program 1 times [2021-11-13 18:27:11,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:11,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601385012] [2021-11-13 18:27:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:11,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:12,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:12,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601385012] [2021-11-13 18:27:12,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601385012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:12,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:12,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:27:12,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187951966] [2021-11-13 18:27:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:12,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:12,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:12,234 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 192 [2021-11-13 18:27:12,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:12,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:12,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 192 [2021-11-13 18:27:12,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:12,770 INFO L129 PetriNetUnfolder]: 361/1012 cut-off events. [2021-11-13 18:27:12,770 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-11-13 18:27:12,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 1012 events. 361/1012 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5721 event pairs, 120 based on Foata normal form. 1/978 useless extension candidates. Maximal degree in co-relation 881. Up to 261 conditions per place. [2021-11-13 18:27:12,785 INFO L132 encePairwiseOnDemand]: 173/192 looper letters, 61 selfloop transitions, 18 changer transitions 1/182 dead transitions. [2021-11-13 18:27:12,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 571 flow [2021-11-13 18:27:12,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:27:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 18:27:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1231 transitions. [2021-11-13 18:27:12,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6411458333333333 [2021-11-13 18:27:12,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1231 transitions. [2021-11-13 18:27:12,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1231 transitions. [2021-11-13 18:27:12,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:12,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1231 transitions. [2021-11-13 18:27:12,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.1) internal successors, (1231), 10 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:12,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:12,808 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:12,808 INFO L186 Difference]: Start difference. First operand has 176 places, 167 transitions, 379 flow. Second operand 10 states and 1231 transitions. [2021-11-13 18:27:12,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 571 flow [2021-11-13 18:27:12,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 182 transitions, 542 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-11-13 18:27:12,826 INFO L242 Difference]: Finished difference. Result has 177 places, 166 transitions, 390 flow [2021-11-13 18:27:12,827 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=177, PETRI_TRANSITIONS=166} [2021-11-13 18:27:12,829 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, -1 predicate places. [2021-11-13 18:27:12,829 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 390 flow [2021-11-13 18:27:12,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:12,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:12,831 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:12,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:27:12,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:12,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash -103450458, now seen corresponding path program 1 times [2021-11-13 18:27:12,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:12,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586505864] [2021-11-13 18:27:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:12,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:13,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:13,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586505864] [2021-11-13 18:27:13,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586505864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:13,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:13,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:27:13,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110826869] [2021-11-13 18:27:13,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:13,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:13,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:13,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:13,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:13,115 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 192 [2021-11-13 18:27:13,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 166 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:13,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:13,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 192 [2021-11-13 18:27:13,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:14,035 INFO L129 PetriNetUnfolder]: 832/2089 cut-off events. [2021-11-13 18:27:14,036 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-11-13 18:27:14,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 2089 events. 832/2089 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14005 event pairs, 169 based on Foata normal form. 32/2088 useless extension candidates. Maximal degree in co-relation 1026. Up to 499 conditions per place. [2021-11-13 18:27:14,067 INFO L132 encePairwiseOnDemand]: 171/192 looper letters, 100 selfloop transitions, 49 changer transitions 0/251 dead transitions. [2021-11-13 18:27:14,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 251 transitions, 874 flow [2021-11-13 18:27:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:27:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-13 18:27:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1618 transitions. [2021-11-13 18:27:14,076 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6482371794871795 [2021-11-13 18:27:14,077 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1618 transitions. [2021-11-13 18:27:14,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1618 transitions. [2021-11-13 18:27:14,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:14,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1618 transitions. [2021-11-13 18:27:14,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.46153846153847) internal successors, (1618), 13 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:14,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 192.0) internal successors, (2688), 14 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:14,099 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 192.0) internal successors, (2688), 14 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:14,100 INFO L186 Difference]: Start difference. First operand has 177 places, 166 transitions, 390 flow. Second operand 13 states and 1618 transitions. [2021-11-13 18:27:14,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 251 transitions, 874 flow [2021-11-13 18:27:14,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 251 transitions, 828 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-13 18:27:14,117 INFO L242 Difference]: Finished difference. Result has 189 places, 203 transitions, 660 flow [2021-11-13 18:27:14,118 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=660, PETRI_PLACES=189, PETRI_TRANSITIONS=203} [2021-11-13 18:27:14,121 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 11 predicate places. [2021-11-13 18:27:14,122 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 203 transitions, 660 flow [2021-11-13 18:27:14,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:14,123 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:14,123 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:14,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:27:14,124 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:14,125 INFO L85 PathProgramCache]: Analyzing trace with hash 233312747, now seen corresponding path program 1 times [2021-11-13 18:27:14,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:14,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905790212] [2021-11-13 18:27:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:14,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:14,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:14,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905790212] [2021-11-13 18:27:14,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905790212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:14,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:14,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:27:14,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045549186] [2021-11-13 18:27:14,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:14,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:14,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:14,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:14,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:14,413 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 192 [2021-11-13 18:27:14,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 203 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:14,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:14,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 192 [2021-11-13 18:27:14,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:15,492 INFO L129 PetriNetUnfolder]: 1084/2663 cut-off events. [2021-11-13 18:27:15,493 INFO L130 PetriNetUnfolder]: For 10877/10958 co-relation queries the response was YES. [2021-11-13 18:27:15,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9157 conditions, 2663 events. 1084/2663 cut-off events. For 10877/10958 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19162 event pairs, 218 based on Foata normal form. 47/2677 useless extension candidates. Maximal degree in co-relation 7848. Up to 732 conditions per place. [2021-11-13 18:27:15,536 INFO L132 encePairwiseOnDemand]: 173/192 looper letters, 74 selfloop transitions, 48 changer transitions 69/292 dead transitions. [2021-11-13 18:27:15,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 292 transitions, 1744 flow [2021-11-13 18:27:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:27:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 18:27:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1373 transitions. [2021-11-13 18:27:15,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.650094696969697 [2021-11-13 18:27:15,544 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1373 transitions. [2021-11-13 18:27:15,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1373 transitions. [2021-11-13 18:27:15,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:15,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1373 transitions. [2021-11-13 18:27:15,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.81818181818181) internal successors, (1373), 11 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 192.0) internal successors, (2304), 12 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,560 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 192.0) internal successors, (2304), 12 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,561 INFO L186 Difference]: Start difference. First operand has 189 places, 203 transitions, 660 flow. Second operand 11 states and 1373 transitions. [2021-11-13 18:27:15,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 292 transitions, 1744 flow [2021-11-13 18:27:15,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 292 transitions, 1744 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 18:27:15,599 INFO L242 Difference]: Finished difference. Result has 207 places, 209 transitions, 973 flow [2021-11-13 18:27:15,600 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=973, PETRI_PLACES=207, PETRI_TRANSITIONS=209} [2021-11-13 18:27:15,601 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 29 predicate places. [2021-11-13 18:27:15,601 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 209 transitions, 973 flow [2021-11-13 18:27:15,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,602 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:15,603 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:15,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:27:15,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2060937300, now seen corresponding path program 1 times [2021-11-13 18:27:15,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:15,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21973423] [2021-11-13 18:27:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:15,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:15,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:15,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21973423] [2021-11-13 18:27:15,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21973423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:15,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:15,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:27:15,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507320692] [2021-11-13 18:27:15,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:15,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:27:15,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:27:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:15,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 192 [2021-11-13 18:27:15,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 209 transitions, 973 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:15,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 192 [2021-11-13 18:27:15,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:15,863 INFO L129 PetriNetUnfolder]: 4/165 cut-off events. [2021-11-13 18:27:15,864 INFO L130 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2021-11-13 18:27:15,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 165 events. 4/165 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 188 event pairs, 4 based on Foata normal form. 8/171 useless extension candidates. Maximal degree in co-relation 334. Up to 13 conditions per place. [2021-11-13 18:27:15,866 INFO L132 encePairwiseOnDemand]: 187/192 looper letters, 9 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2021-11-13 18:27:15,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 137 transitions, 432 flow [2021-11-13 18:27:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:27:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:27:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1004 transitions. [2021-11-13 18:27:15,872 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8715277777777778 [2021-11-13 18:27:15,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1004 transitions. [2021-11-13 18:27:15,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1004 transitions. [2021-11-13 18:27:15,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:15,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1004 transitions. [2021-11-13 18:27:15,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.33333333333334) internal successors, (1004), 6 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,882 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,883 INFO L186 Difference]: Start difference. First operand has 207 places, 209 transitions, 973 flow. Second operand 6 states and 1004 transitions. [2021-11-13 18:27:15,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 137 transitions, 432 flow [2021-11-13 18:27:15,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 137 transitions, 312 flow, removed 40 selfloop flow, removed 19 redundant places. [2021-11-13 18:27:15,890 INFO L242 Difference]: Finished difference. Result has 150 places, 137 transitions, 294 flow [2021-11-13 18:27:15,891 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=150, PETRI_TRANSITIONS=137} [2021-11-13 18:27:15,895 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, -28 predicate places. [2021-11-13 18:27:15,895 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 137 transitions, 294 flow [2021-11-13 18:27:15,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:15,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:15,897 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:15,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:27:15,898 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1804837479, now seen corresponding path program 1 times [2021-11-13 18:27:15,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:15,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032878453] [2021-11-13 18:27:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:15,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:17,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:17,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032878453] [2021-11-13 18:27:17,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032878453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:17,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:17,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:27:17,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743737816] [2021-11-13 18:27:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:17,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:27:17,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:27:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:27:17,104 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2021-11-13 18:27:17,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 137 transitions, 294 flow. Second operand has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:17,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:17,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2021-11-13 18:27:17,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:18,493 INFO L129 PetriNetUnfolder]: 460/1288 cut-off events. [2021-11-13 18:27:18,494 INFO L130 PetriNetUnfolder]: For 162/165 co-relation queries the response was YES. [2021-11-13 18:27:18,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2414 conditions, 1288 events. 460/1288 cut-off events. For 162/165 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7494 event pairs, 200 based on Foata normal form. 0/1239 useless extension candidates. Maximal degree in co-relation 2406. Up to 363 conditions per place. [2021-11-13 18:27:18,511 INFO L132 encePairwiseOnDemand]: 170/192 looper letters, 104 selfloop transitions, 25 changer transitions 0/198 dead transitions. [2021-11-13 18:27:18,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 198 transitions, 704 flow [2021-11-13 18:27:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:27:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-13 18:27:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1804 transitions. [2021-11-13 18:27:18,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5219907407407407 [2021-11-13 18:27:18,522 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1804 transitions. [2021-11-13 18:27:18,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1804 transitions. [2021-11-13 18:27:18,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:18,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1804 transitions. [2021-11-13 18:27:18,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 100.22222222222223) internal successors, (1804), 18 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:18,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 192.0) internal successors, (3648), 19 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:18,545 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 192.0) internal successors, (3648), 19 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:18,546 INFO L186 Difference]: Start difference. First operand has 150 places, 137 transitions, 294 flow. Second operand 18 states and 1804 transitions. [2021-11-13 18:27:18,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 198 transitions, 704 flow [2021-11-13 18:27:18,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 198 transitions, 697 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-13 18:27:18,554 INFO L242 Difference]: Finished difference. Result has 173 places, 151 transitions, 420 flow [2021-11-13 18:27:18,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=420, PETRI_PLACES=173, PETRI_TRANSITIONS=151} [2021-11-13 18:27:18,555 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, -5 predicate places. [2021-11-13 18:27:18,556 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 151 transitions, 420 flow [2021-11-13 18:27:18,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:18,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:18,558 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:18,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:27:18,558 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:18,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:18,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1090306135, now seen corresponding path program 2 times [2021-11-13 18:27:18,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:18,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952020890] [2021-11-13 18:27:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:18,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:19,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:19,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952020890] [2021-11-13 18:27:19,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952020890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:19,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:19,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:27:19,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222346248] [2021-11-13 18:27:19,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:19,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:27:19,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:19,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:27:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:27:19,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2021-11-13 18:27:19,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 151 transitions, 420 flow. Second operand has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:19,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:19,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2021-11-13 18:27:19,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:20,895 INFO L129 PetriNetUnfolder]: 608/1734 cut-off events. [2021-11-13 18:27:20,895 INFO L130 PetriNetUnfolder]: For 831/839 co-relation queries the response was YES. [2021-11-13 18:27:20,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3650 conditions, 1734 events. 608/1734 cut-off events. For 831/839 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11602 event pairs, 108 based on Foata normal form. 9/1711 useless extension candidates. Maximal degree in co-relation 3632. Up to 354 conditions per place. [2021-11-13 18:27:20,919 INFO L132 encePairwiseOnDemand]: 167/192 looper letters, 124 selfloop transitions, 30 changer transitions 0/224 dead transitions. [2021-11-13 18:27:20,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 224 transitions, 1001 flow [2021-11-13 18:27:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:27:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-13 18:27:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1714 transitions. [2021-11-13 18:27:20,928 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5251225490196079 [2021-11-13 18:27:20,929 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1714 transitions. [2021-11-13 18:27:20,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1714 transitions. [2021-11-13 18:27:20,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:20,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1714 transitions. [2021-11-13 18:27:20,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 100.82352941176471) internal successors, (1714), 17 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:20,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 192.0) internal successors, (3456), 18 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:20,949 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 192.0) internal successors, (3456), 18 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:20,949 INFO L186 Difference]: Start difference. First operand has 173 places, 151 transitions, 420 flow. Second operand 17 states and 1714 transitions. [2021-11-13 18:27:20,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 224 transitions, 1001 flow [2021-11-13 18:27:20,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 224 transitions, 988 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-13 18:27:20,961 INFO L242 Difference]: Finished difference. Result has 192 places, 166 transitions, 590 flow [2021-11-13 18:27:20,962 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=590, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2021-11-13 18:27:20,963 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 14 predicate places. [2021-11-13 18:27:20,963 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 590 flow [2021-11-13 18:27:20,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:20,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:20,966 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:20,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:27:20,968 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1051587759, now seen corresponding path program 3 times [2021-11-13 18:27:20,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:20,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916347493] [2021-11-13 18:27:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:20,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:21,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:21,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916347493] [2021-11-13 18:27:21,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916347493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:21,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:21,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:27:21,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155343837] [2021-11-13 18:27:21,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:21,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:27:21,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:27:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:27:21,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2021-11-13 18:27:21,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 590 flow. Second operand has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:21,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:21,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2021-11-13 18:27:21,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:23,759 INFO L129 PetriNetUnfolder]: 1016/3037 cut-off events. [2021-11-13 18:27:23,759 INFO L130 PetriNetUnfolder]: For 2862/2905 co-relation queries the response was YES. [2021-11-13 18:27:23,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7233 conditions, 3037 events. 1016/3037 cut-off events. For 2862/2905 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 24557 event pairs, 290 based on Foata normal form. 32/3007 useless extension candidates. Maximal degree in co-relation 7208. Up to 773 conditions per place. [2021-11-13 18:27:23,801 INFO L132 encePairwiseOnDemand]: 169/192 looper letters, 160 selfloop transitions, 45 changer transitions 0/275 dead transitions. [2021-11-13 18:27:23,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 275 transitions, 1550 flow [2021-11-13 18:27:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:27:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:27:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1920 transitions. [2021-11-13 18:27:23,813 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2021-11-13 18:27:23,813 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1920 transitions. [2021-11-13 18:27:23,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1920 transitions. [2021-11-13 18:27:23,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:23,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1920 transitions. [2021-11-13 18:27:23,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 101.05263157894737) internal successors, (1920), 19 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:23,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:23,837 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:23,838 INFO L186 Difference]: Start difference. First operand has 192 places, 166 transitions, 590 flow. Second operand 19 states and 1920 transitions. [2021-11-13 18:27:23,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 275 transitions, 1550 flow [2021-11-13 18:27:23,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 275 transitions, 1523 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-11-13 18:27:23,863 INFO L242 Difference]: Finished difference. Result has 213 places, 193 transitions, 918 flow [2021-11-13 18:27:23,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=918, PETRI_PLACES=213, PETRI_TRANSITIONS=193} [2021-11-13 18:27:23,866 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 35 predicate places. [2021-11-13 18:27:23,866 INFO L470 AbstractCegarLoop]: Abstraction has has 213 places, 193 transitions, 918 flow [2021-11-13 18:27:23,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:23,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:23,868 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:23,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:27:23,869 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:23,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash -145582275, now seen corresponding path program 4 times [2021-11-13 18:27:23,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:23,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378585641] [2021-11-13 18:27:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:23,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:24,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:24,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378585641] [2021-11-13 18:27:24,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378585641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:24,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:24,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:27:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416436907] [2021-11-13 18:27:24,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:24,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:27:24,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:27:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:27:24,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2021-11-13 18:27:24,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 193 transitions, 918 flow. Second operand has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:24,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:24,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2021-11-13 18:27:24,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:26,507 INFO L129 PetriNetUnfolder]: 1021/3126 cut-off events. [2021-11-13 18:27:26,507 INFO L130 PetriNetUnfolder]: For 4467/4505 co-relation queries the response was YES. [2021-11-13 18:27:26,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7880 conditions, 3126 events. 1021/3126 cut-off events. For 4467/4505 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 25268 event pairs, 538 based on Foata normal form. 32/3092 useless extension candidates. Maximal degree in co-relation 7845. Up to 1182 conditions per place. [2021-11-13 18:27:26,565 INFO L132 encePairwiseOnDemand]: 170/192 looper letters, 138 selfloop transitions, 53 changer transitions 0/261 dead transitions. [2021-11-13 18:27:26,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 261 transitions, 1656 flow [2021-11-13 18:27:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:27:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-13 18:27:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1807 transitions. [2021-11-13 18:27:26,660 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5228587962962963 [2021-11-13 18:27:26,660 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1807 transitions. [2021-11-13 18:27:26,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1807 transitions. [2021-11-13 18:27:26,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:26,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1807 transitions. [2021-11-13 18:27:26,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 100.38888888888889) internal successors, (1807), 18 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:26,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 192.0) internal successors, (3648), 19 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:26,691 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 192.0) internal successors, (3648), 19 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:26,701 INFO L186 Difference]: Start difference. First operand has 213 places, 193 transitions, 918 flow. Second operand 18 states and 1807 transitions. [2021-11-13 18:27:26,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 261 transitions, 1656 flow [2021-11-13 18:27:26,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 261 transitions, 1615 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-11-13 18:27:26,803 INFO L242 Difference]: Finished difference. Result has 235 places, 207 transitions, 1180 flow [2021-11-13 18:27:26,804 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1180, PETRI_PLACES=235, PETRI_TRANSITIONS=207} [2021-11-13 18:27:26,805 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 57 predicate places. [2021-11-13 18:27:26,805 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 207 transitions, 1180 flow [2021-11-13 18:27:26,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:26,807 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:26,816 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:26,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:27:26,821 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:26,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 771937853, now seen corresponding path program 5 times [2021-11-13 18:27:26,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:26,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930829475] [2021-11-13 18:27:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:26,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:27,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:27,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930829475] [2021-11-13 18:27:27,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930829475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:27,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:27,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:27:27,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307132006] [2021-11-13 18:27:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:27,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:27:27,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:27,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:27:27,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:27:27,661 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2021-11-13 18:27:27,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 207 transitions, 1180 flow. Second operand has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:27,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:27,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2021-11-13 18:27:27,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:29,701 INFO L129 PetriNetUnfolder]: 1024/3180 cut-off events. [2021-11-13 18:27:29,701 INFO L130 PetriNetUnfolder]: For 6476/6538 co-relation queries the response was YES. [2021-11-13 18:27:29,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8544 conditions, 3180 events. 1024/3180 cut-off events. For 6476/6538 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 25896 event pairs, 138 based on Foata normal form. 32/3168 useless extension candidates. Maximal degree in co-relation 8498. Up to 600 conditions per place. [2021-11-13 18:27:29,757 INFO L132 encePairwiseOnDemand]: 167/192 looper letters, 175 selfloop transitions, 71 changer transitions 0/316 dead transitions. [2021-11-13 18:27:29,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 316 transitions, 2322 flow [2021-11-13 18:27:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:27:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:27:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1929 transitions. [2021-11-13 18:27:29,764 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5287828947368421 [2021-11-13 18:27:29,764 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1929 transitions. [2021-11-13 18:27:29,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1929 transitions. [2021-11-13 18:27:29,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:29,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1929 transitions. [2021-11-13 18:27:29,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 101.52631578947368) internal successors, (1929), 19 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:29,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:29,783 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:29,783 INFO L186 Difference]: Start difference. First operand has 235 places, 207 transitions, 1180 flow. Second operand 19 states and 1929 transitions. [2021-11-13 18:27:29,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 316 transitions, 2322 flow [2021-11-13 18:27:29,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 316 transitions, 2273 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-11-13 18:27:29,837 INFO L242 Difference]: Finished difference. Result has 254 places, 229 transitions, 1615 flow [2021-11-13 18:27:29,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1615, PETRI_PLACES=254, PETRI_TRANSITIONS=229} [2021-11-13 18:27:29,840 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 76 predicate places. [2021-11-13 18:27:29,840 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 229 transitions, 1615 flow [2021-11-13 18:27:29,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:29,841 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:29,841 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:29,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:27:29,842 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1271904821, now seen corresponding path program 6 times [2021-11-13 18:27:29,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:29,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137736491] [2021-11-13 18:27:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:29,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:30,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:30,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137736491] [2021-11-13 18:27:30,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137736491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:30,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:30,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-13 18:27:30,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487478544] [2021-11-13 18:27:30,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:30,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:27:30,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:27:30,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:27:30,913 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 192 [2021-11-13 18:27:30,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 229 transitions, 1615 flow. Second operand has 19 states, 19 states have (on average 91.47368421052632) internal successors, (1738), 19 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:30,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:30,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 192 [2021-11-13 18:27:30,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:34,987 INFO L129 PetriNetUnfolder]: 3180/7744 cut-off events. [2021-11-13 18:27:34,988 INFO L130 PetriNetUnfolder]: For 21179/21197 co-relation queries the response was YES. [2021-11-13 18:27:35,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21732 conditions, 7744 events. 3180/7744 cut-off events. For 21179/21197 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 69559 event pairs, 656 based on Foata normal form. 1/7670 useless extension candidates. Maximal degree in co-relation 21680. Up to 3192 conditions per place. [2021-11-13 18:27:35,178 INFO L132 encePairwiseOnDemand]: 166/192 looper letters, 241 selfloop transitions, 80 changer transitions 0/385 dead transitions. [2021-11-13 18:27:35,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 385 transitions, 3445 flow [2021-11-13 18:27:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:27:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:27:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1855 transitions. [2021-11-13 18:27:35,189 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5084978070175439 [2021-11-13 18:27:35,190 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1855 transitions. [2021-11-13 18:27:35,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1855 transitions. [2021-11-13 18:27:35,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:35,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1855 transitions. [2021-11-13 18:27:35,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.63157894736842) internal successors, (1855), 19 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:35,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:35,216 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:35,216 INFO L186 Difference]: Start difference. First operand has 254 places, 229 transitions, 1615 flow. Second operand 19 states and 1855 transitions. [2021-11-13 18:27:35,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 385 transitions, 3445 flow [2021-11-13 18:27:35,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 385 transitions, 3336 flow, removed 36 selfloop flow, removed 6 redundant places. [2021-11-13 18:27:35,435 INFO L242 Difference]: Finished difference. Result has 276 places, 268 transitions, 2334 flow [2021-11-13 18:27:35,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2334, PETRI_PLACES=276, PETRI_TRANSITIONS=268} [2021-11-13 18:27:35,437 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 98 predicate places. [2021-11-13 18:27:35,437 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 268 transitions, 2334 flow [2021-11-13 18:27:35,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.47368421052632) internal successors, (1738), 19 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:35,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:35,443 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:35,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:27:35,445 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:35,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1587281505, now seen corresponding path program 7 times [2021-11-13 18:27:35,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:35,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370783082] [2021-11-13 18:27:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:35,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:36,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:36,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370783082] [2021-11-13 18:27:36,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370783082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:36,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:36,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:27:36,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643177320] [2021-11-13 18:27:36,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:36,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:27:36,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:27:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:27:36,208 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2021-11-13 18:27:36,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 268 transitions, 2334 flow. Second operand has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:36,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:36,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2021-11-13 18:27:36,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:38,988 INFO L129 PetriNetUnfolder]: 2209/6698 cut-off events. [2021-11-13 18:27:38,988 INFO L130 PetriNetUnfolder]: For 27339/27552 co-relation queries the response was YES. [2021-11-13 18:27:39,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20246 conditions, 6698 events. 2209/6698 cut-off events. For 27339/27552 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 65892 event pairs, 573 based on Foata normal form. 137/6721 useless extension candidates. Maximal degree in co-relation 20184. Up to 2089 conditions per place. [2021-11-13 18:27:39,073 INFO L132 encePairwiseOnDemand]: 167/192 looper letters, 224 selfloop transitions, 90 changer transitions 0/388 dead transitions. [2021-11-13 18:27:39,073 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 388 transitions, 4299 flow [2021-11-13 18:27:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:27:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-13 18:27:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1711 transitions. [2021-11-13 18:27:39,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.524203431372549 [2021-11-13 18:27:39,079 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1711 transitions. [2021-11-13 18:27:39,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1711 transitions. [2021-11-13 18:27:39,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:39,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1711 transitions. [2021-11-13 18:27:39,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 100.6470588235294) internal successors, (1711), 17 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:39,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 192.0) internal successors, (3456), 18 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:39,092 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 192.0) internal successors, (3456), 18 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:39,092 INFO L186 Difference]: Start difference. First operand has 276 places, 268 transitions, 2334 flow. Second operand 17 states and 1711 transitions. [2021-11-13 18:27:39,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 388 transitions, 4299 flow [2021-11-13 18:27:39,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 388 transitions, 4212 flow, removed 34 selfloop flow, removed 6 redundant places. [2021-11-13 18:27:39,266 INFO L242 Difference]: Finished difference. Result has 294 places, 304 transitions, 3120 flow [2021-11-13 18:27:39,267 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3120, PETRI_PLACES=294, PETRI_TRANSITIONS=304} [2021-11-13 18:27:39,269 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 116 predicate places. [2021-11-13 18:27:39,269 INFO L470 AbstractCegarLoop]: Abstraction has has 294 places, 304 transitions, 3120 flow [2021-11-13 18:27:39,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:39,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:39,270 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:39,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:27:39,271 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1224732759, now seen corresponding path program 8 times [2021-11-13 18:27:39,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:39,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069925226] [2021-11-13 18:27:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:39,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:40,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:40,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069925226] [2021-11-13 18:27:40,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069925226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:40,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:40,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:27:40,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386706395] [2021-11-13 18:27:40,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:40,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:27:40,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:27:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:27:40,060 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2021-11-13 18:27:40,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 304 transitions, 3120 flow. Second operand has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:40,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:40,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2021-11-13 18:27:40,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:43,305 INFO L129 PetriNetUnfolder]: 2495/8046 cut-off events. [2021-11-13 18:27:43,305 INFO L130 PetriNetUnfolder]: For 40397/40637 co-relation queries the response was YES. [2021-11-13 18:27:43,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26308 conditions, 8046 events. 2495/8046 cut-off events. For 40397/40637 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 83466 event pairs, 972 based on Foata normal form. 161/8091 useless extension candidates. Maximal degree in co-relation 26238. Up to 2341 conditions per place. [2021-11-13 18:27:43,474 INFO L132 encePairwiseOnDemand]: 169/192 looper letters, 296 selfloop transitions, 120 changer transitions 0/490 dead transitions. [2021-11-13 18:27:43,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 490 transitions, 6206 flow [2021-11-13 18:27:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:27:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:27:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1919 transitions. [2021-11-13 18:27:43,481 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2021-11-13 18:27:43,482 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1919 transitions. [2021-11-13 18:27:43,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1919 transitions. [2021-11-13 18:27:43,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:43,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1919 transitions. [2021-11-13 18:27:43,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 101.0) internal successors, (1919), 19 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:43,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:43,498 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:43,498 INFO L186 Difference]: Start difference. First operand has 294 places, 304 transitions, 3120 flow. Second operand 19 states and 1919 transitions. [2021-11-13 18:27:43,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 490 transitions, 6206 flow [2021-11-13 18:27:43,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 490 transitions, 6138 flow, removed 24 selfloop flow, removed 6 redundant places. [2021-11-13 18:27:43,822 INFO L242 Difference]: Finished difference. Result has 315 places, 357 transitions, 4440 flow [2021-11-13 18:27:43,823 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4440, PETRI_PLACES=315, PETRI_TRANSITIONS=357} [2021-11-13 18:27:43,824 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 137 predicate places. [2021-11-13 18:27:43,825 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 357 transitions, 4440 flow [2021-11-13 18:27:43,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:43,825 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:43,826 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:43,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:27:43,826 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:43,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1025638813, now seen corresponding path program 9 times [2021-11-13 18:27:43,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:43,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752123952] [2021-11-13 18:27:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:43,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:44,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:44,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752123952] [2021-11-13 18:27:44,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752123952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:44,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:44,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-13 18:27:44,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97797065] [2021-11-13 18:27:44,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:44,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:27:44,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:27:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:27:44,948 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 192 [2021-11-13 18:27:44,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 357 transitions, 4440 flow. Second operand has 19 states, 19 states have (on average 91.47368421052632) internal successors, (1738), 19 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:44,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:44,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 192 [2021-11-13 18:27:44,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:51,975 INFO L129 PetriNetUnfolder]: 6618/16249 cut-off events. [2021-11-13 18:27:51,975 INFO L130 PetriNetUnfolder]: For 80559/80650 co-relation queries the response was YES. [2021-11-13 18:27:52,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52870 conditions, 16249 events. 6618/16249 cut-off events. For 80559/80650 co-relation queries the response was YES. Maximal size of possible extension queue 755. Compared 167721 event pairs, 2237 based on Foata normal form. 42/16131 useless extension candidates. Maximal degree in co-relation 52790. Up to 8130 conditions per place. [2021-11-13 18:27:52,392 INFO L132 encePairwiseOnDemand]: 167/192 looper letters, 318 selfloop transitions, 154 changer transitions 0/536 dead transitions. [2021-11-13 18:27:52,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 536 transitions, 7285 flow [2021-11-13 18:27:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:27:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:27:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1846 transitions. [2021-11-13 18:27:52,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5060307017543859 [2021-11-13 18:27:52,400 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1846 transitions. [2021-11-13 18:27:52,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1846 transitions. [2021-11-13 18:27:52,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:52,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1846 transitions. [2021-11-13 18:27:52,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.15789473684211) internal successors, (1846), 19 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:52,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:52,417 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:52,418 INFO L186 Difference]: Start difference. First operand has 315 places, 357 transitions, 4440 flow. Second operand 19 states and 1846 transitions. [2021-11-13 18:27:52,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 536 transitions, 7285 flow [2021-11-13 18:27:53,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 536 transitions, 7170 flow, removed 48 selfloop flow, removed 5 redundant places. [2021-11-13 18:27:53,312 INFO L242 Difference]: Finished difference. Result has 338 places, 417 transitions, 5938 flow [2021-11-13 18:27:53,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=4347, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5938, PETRI_PLACES=338, PETRI_TRANSITIONS=417} [2021-11-13 18:27:53,314 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 160 predicate places. [2021-11-13 18:27:53,314 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 417 transitions, 5938 flow [2021-11-13 18:27:53,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.47368421052632) internal successors, (1738), 19 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:53,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:53,315 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:53,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:27:53,315 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:27:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1978541197, now seen corresponding path program 10 times [2021-11-13 18:27:53,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:53,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625660963] [2021-11-13 18:27:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:53,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:54,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:54,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625660963] [2021-11-13 18:27:54,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625660963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:54,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:54,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-13 18:27:54,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985797394] [2021-11-13 18:27:54,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:54,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:27:54,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:27:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:27:54,236 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 192 [2021-11-13 18:27:54,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 417 transitions, 5938 flow. Second operand has 18 states, 18 states have (on average 90.72222222222223) internal successors, (1633), 18 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:54,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:54,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 192 [2021-11-13 18:27:54,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:02,449 INFO L129 PetriNetUnfolder]: 7949/18502 cut-off events. [2021-11-13 18:28:02,449 INFO L130 PetriNetUnfolder]: For 104664/104763 co-relation queries the response was YES. [2021-11-13 18:28:02,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61647 conditions, 18502 events. 7949/18502 cut-off events. For 104664/104763 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 186411 event pairs, 2800 based on Foata normal form. 41/18383 useless extension candidates. Maximal degree in co-relation 61557. Up to 9039 conditions per place. [2021-11-13 18:28:03,142 INFO L132 encePairwiseOnDemand]: 166/192 looper letters, 355 selfloop transitions, 166 changer transitions 0/584 dead transitions. [2021-11-13 18:28:03,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 584 transitions, 8494 flow [2021-11-13 18:28:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:28:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-13 18:28:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1941 transitions. [2021-11-13 18:28:03,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.50546875 [2021-11-13 18:28:03,149 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1941 transitions. [2021-11-13 18:28:03,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1941 transitions. [2021-11-13 18:28:03,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:03,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1941 transitions. [2021-11-13 18:28:03,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 97.05) internal successors, (1941), 20 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:03,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 192.0) internal successors, (4032), 21 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:03,164 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 192.0) internal successors, (4032), 21 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:03,165 INFO L186 Difference]: Start difference. First operand has 338 places, 417 transitions, 5938 flow. Second operand 20 states and 1941 transitions. [2021-11-13 18:28:03,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 584 transitions, 8494 flow [2021-11-13 18:28:04,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 584 transitions, 8359 flow, removed 49 selfloop flow, removed 6 redundant places. [2021-11-13 18:28:04,050 INFO L242 Difference]: Finished difference. Result has 359 places, 439 transitions, 6808 flow [2021-11-13 18:28:04,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=5813, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6808, PETRI_PLACES=359, PETRI_TRANSITIONS=439} [2021-11-13 18:28:04,052 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 181 predicate places. [2021-11-13 18:28:04,052 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 439 transitions, 6808 flow [2021-11-13 18:28:04,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.72222222222223) internal successors, (1633), 18 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:04,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:04,054 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:04,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:28:04,054 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:28:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1691733891, now seen corresponding path program 11 times [2021-11-13 18:28:04,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:04,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029119878] [2021-11-13 18:28:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:04,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:04,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:04,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029119878] [2021-11-13 18:28:04,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029119878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:04,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:04,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-13 18:28:04,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846714600] [2021-11-13 18:28:04,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:04,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:28:04,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:28:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:28:04,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 192 [2021-11-13 18:28:04,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 439 transitions, 6808 flow. Second operand has 18 states, 18 states have (on average 90.72222222222223) internal successors, (1633), 18 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:04,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:04,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 192 [2021-11-13 18:28:04,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:13,356 INFO L129 PetriNetUnfolder]: 7947/18439 cut-off events. [2021-11-13 18:28:13,356 INFO L130 PetriNetUnfolder]: For 114928/115010 co-relation queries the response was YES. [2021-11-13 18:28:13,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63081 conditions, 18439 events. 7947/18439 cut-off events. For 114928/115010 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 186095 event pairs, 2758 based on Foata normal form. 26/18292 useless extension candidates. Maximal degree in co-relation 62983. Up to 9039 conditions per place. [2021-11-13 18:28:13,811 INFO L132 encePairwiseOnDemand]: 168/192 looper letters, 377 selfloop transitions, 153 changer transitions 0/593 dead transitions. [2021-11-13 18:28:13,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 593 transitions, 9261 flow [2021-11-13 18:28:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 18:28:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-13 18:28:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2028 transitions. [2021-11-13 18:28:13,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2021-11-13 18:28:13,827 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2028 transitions. [2021-11-13 18:28:13,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2028 transitions. [2021-11-13 18:28:13,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:13,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2028 transitions. [2021-11-13 18:28:13,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.57142857142857) internal successors, (2028), 21 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:13,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 192.0) internal successors, (4224), 22 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:13,846 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 192.0) internal successors, (4224), 22 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:13,848 INFO L186 Difference]: Start difference. First operand has 359 places, 439 transitions, 6808 flow. Second operand 21 states and 2028 transitions. [2021-11-13 18:28:13,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 593 transitions, 9261 flow [2021-11-13 18:28:14,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 593 transitions, 9143 flow, removed 32 selfloop flow, removed 8 redundant places. [2021-11-13 18:28:14,757 INFO L242 Difference]: Finished difference. Result has 379 places, 459 transitions, 7564 flow [2021-11-13 18:28:14,758 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=6690, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7564, PETRI_PLACES=379, PETRI_TRANSITIONS=459} [2021-11-13 18:28:14,759 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 201 predicate places. [2021-11-13 18:28:14,759 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 459 transitions, 7564 flow [2021-11-13 18:28:14,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.72222222222223) internal successors, (1633), 18 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:14,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:14,760 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:14,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:28:14,761 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:28:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1627072125, now seen corresponding path program 12 times [2021-11-13 18:28:14,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:14,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525320197] [2021-11-13 18:28:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:14,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:15,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:15,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525320197] [2021-11-13 18:28:15,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525320197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:15,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:15,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:28:15,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856280490] [2021-11-13 18:28:15,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:15,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:28:15,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:15,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:28:15,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:28:15,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2021-11-13 18:28:15,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 459 transitions, 7564 flow. Second operand has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:15,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:15,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2021-11-13 18:28:15,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:20,759 INFO L129 PetriNetUnfolder]: 3187/10599 cut-off events. [2021-11-13 18:28:20,760 INFO L130 PetriNetUnfolder]: For 89902/90199 co-relation queries the response was YES. [2021-11-13 18:28:21,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39317 conditions, 10599 events. 3187/10599 cut-off events. For 89902/90199 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 116192 event pairs, 647 based on Foata normal form. 199/10667 useless extension candidates. Maximal degree in co-relation 39211. Up to 1896 conditions per place. [2021-11-13 18:28:21,043 INFO L132 encePairwiseOnDemand]: 167/192 looper letters, 350 selfloop transitions, 251 changer transitions 0/675 dead transitions. [2021-11-13 18:28:21,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 675 transitions, 12338 flow [2021-11-13 18:28:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:28:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:28:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1926 transitions. [2021-11-13 18:28:21,051 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5279605263157895 [2021-11-13 18:28:21,051 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1926 transitions. [2021-11-13 18:28:21,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1926 transitions. [2021-11-13 18:28:21,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:21,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1926 transitions. [2021-11-13 18:28:21,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 101.36842105263158) internal successors, (1926), 19 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:21,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:21,066 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:21,066 INFO L186 Difference]: Start difference. First operand has 379 places, 459 transitions, 7564 flow. Second operand 19 states and 1926 transitions. [2021-11-13 18:28:21,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 675 transitions, 12338 flow [2021-11-13 18:28:21,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 675 transitions, 11753 flow, removed 87 selfloop flow, removed 10 redundant places. [2021-11-13 18:28:21,678 INFO L242 Difference]: Finished difference. Result has 395 places, 540 transitions, 10005 flow [2021-11-13 18:28:21,679 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=7174, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10005, PETRI_PLACES=395, PETRI_TRANSITIONS=540} [2021-11-13 18:28:21,679 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 217 predicate places. [2021-11-13 18:28:21,679 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 540 transitions, 10005 flow [2021-11-13 18:28:21,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.06666666666666) internal successors, (1456), 15 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:21,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:21,680 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:21,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:28:21,680 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:28:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:21,680 INFO L85 PathProgramCache]: Analyzing trace with hash 748855371, now seen corresponding path program 13 times [2021-11-13 18:28:21,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:21,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869757511] [2021-11-13 18:28:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:21,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:22,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:22,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869757511] [2021-11-13 18:28:22,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869757511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:22,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:22,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-13 18:28:22,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371597276] [2021-11-13 18:28:22,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:22,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:28:22,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:22,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:28:22,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:28:22,856 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 192 [2021-11-13 18:28:22,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 540 transitions, 10005 flow. Second operand has 19 states, 19 states have (on average 91.47368421052632) internal successors, (1738), 19 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:22,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:22,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 192 [2021-11-13 18:28:22,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:35,519 INFO L129 PetriNetUnfolder]: 9703/24448 cut-off events. [2021-11-13 18:28:35,519 INFO L130 PetriNetUnfolder]: For 189105/189137 co-relation queries the response was YES. [2021-11-13 18:28:36,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88012 conditions, 24448 events. 9703/24448 cut-off events. For 189105/189137 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 273147 event pairs, 4771 based on Foata normal form. 17/24258 useless extension candidates. Maximal degree in co-relation 87898. Up to 8298 conditions per place. [2021-11-13 18:28:36,287 INFO L132 encePairwiseOnDemand]: 167/192 looper letters, 511 selfloop transitions, 234 changer transitions 0/809 dead transitions. [2021-11-13 18:28:36,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 809 transitions, 15290 flow [2021-11-13 18:28:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:28:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:28:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1865 transitions. [2021-11-13 18:28:36,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5112390350877193 [2021-11-13 18:28:36,293 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1865 transitions. [2021-11-13 18:28:36,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1865 transitions. [2021-11-13 18:28:36,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:36,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1865 transitions. [2021-11-13 18:28:36,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 98.15789473684211) internal successors, (1865), 19 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:36,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:36,308 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 192.0) internal successors, (3840), 20 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:36,309 INFO L186 Difference]: Start difference. First operand has 395 places, 540 transitions, 10005 flow. Second operand 19 states and 1865 transitions. [2021-11-13 18:28:36,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 809 transitions, 15290 flow [2021-11-13 18:28:38,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 809 transitions, 15120 flow, removed 65 selfloop flow, removed 6 redundant places. [2021-11-13 18:28:38,305 INFO L242 Difference]: Finished difference. Result has 418 places, 614 transitions, 12368 flow [2021-11-13 18:28:38,307 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=9888, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12368, PETRI_PLACES=418, PETRI_TRANSITIONS=614} [2021-11-13 18:28:38,308 INFO L334 CegarLoopForPetriNet]: 178 programPoint places, 240 predicate places. [2021-11-13 18:28:38,308 INFO L470 AbstractCegarLoop]: Abstraction has has 418 places, 614 transitions, 12368 flow [2021-11-13 18:28:38,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.47368421052632) internal successors, (1738), 19 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:38,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:38,309 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:38,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 18:28:38,310 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-13 18:28:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash -382037193, now seen corresponding path program 14 times [2021-11-13 18:28:38,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:38,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638998511] [2021-11-13 18:28:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:38,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:39,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:39,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638998511] [2021-11-13 18:28:39,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638998511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:39,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:39,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-13 18:28:39,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084380704] [2021-11-13 18:28:39,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:39,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:28:39,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:28:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:28:39,304 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 192 [2021-11-13 18:28:39,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 614 transitions, 12368 flow. Second operand has 18 states, 18 states have (on average 90.72222222222223) internal successors, (1633), 18 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:39,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:39,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 192 [2021-11-13 18:28:39,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand