./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:44:54,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:44:54,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:44:54,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:44:54,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:44:54,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:44:54,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:44:54,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:44:54,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:44:54,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:44:54,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:44:54,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:44:54,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:44:54,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:44:54,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:44:54,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:44:54,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:44:54,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:44:54,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:44:54,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:44:54,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:44:54,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:44:54,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:44:54,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:44:54,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:44:54,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:44:54,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:44:54,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:44:54,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:44:54,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:44:54,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:44:54,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:44:54,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:44:54,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:44:54,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:44:54,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:44:54,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:44:54,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:44:54,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:44:54,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:44:54,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:44:54,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:44:54,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:44:54,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:44:54,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:44:54,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:44:54,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:44:54,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:44:54,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:44:54,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:44:54,572 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:44:54,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:44:54,573 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:44:54,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:44:54,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:44:54,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:44:54,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:44:54,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:44:54,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:44:54,574 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:44:54,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:44:54,575 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:44:54,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:44:54,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:44:54,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:44:54,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:44:54,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:44:54,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:44:54,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:44:54,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:44:54,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:44:54,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:44:54,578 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:44:54,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:44:54,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:44:54,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:44:54,579 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_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2021-11-20 06:44:54,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:44:54,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:44:54,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:44:54,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:44:54,943 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:44:54,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2021-11-20 06:44:55,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/data/61955ed79/68bfd4c30e4b40909f24da9167662f2a/FLAG5a16e6bbf [2021-11-20 06:44:55,840 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:44:55,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2021-11-20 06:44:55,884 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/data/61955ed79/68bfd4c30e4b40909f24da9167662f2a/FLAG5a16e6bbf [2021-11-20 06:44:55,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/data/61955ed79/68bfd4c30e4b40909f24da9167662f2a [2021-11-20 06:44:55,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:44:55,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:44:55,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:44:55,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:44:55,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:44:55,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:44:55" (1/1) ... [2021-11-20 06:44:55,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518f0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:55, skipping insertion in model container [2021-11-20 06:44:55,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:44:55" (1/1) ... [2021-11-20 06:44:56,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:44:56,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:44:56,303 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 06:44:57,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2021-11-20 06:44:57,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:44:57,270 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:44:57,290 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 06:44:57,355 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2021-11-20 06:44:57,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:44:57,566 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:44:57,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57 WrapperNode [2021-11-20 06:44:57,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:44:57,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:44:57,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:44:57,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:44:57,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,702 INFO L137 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2021-11-20 06:44:57,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:44:57,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:44:57,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:44:57,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:44:57,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:44:57,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:44:57,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:44:57,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:44:57,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (1/1) ... [2021-11-20 06:44:57,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:44:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:44:57,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:44:57,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdefa65-ee30-4199-bb64-c6e1d004733a/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:44:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 06:44:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:44:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 06:44:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:44:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:44:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:44:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:44:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:44:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-11-20 06:44:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-11-20 06:44:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:44:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:44:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:44:57,899 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 06:44:58,244 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:44:58,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:44:58,650 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:44:58,684 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:44:58,684 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:44:58,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:44:58 BoogieIcfgContainer [2021-11-20 06:44:58,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:44:58,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:44:58,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:44:58,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:44:58,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:44:55" (1/3) ... [2021-11-20 06:44:58,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4870575b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:44:58, skipping insertion in model container [2021-11-20 06:44:58,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:57" (2/3) ... [2021-11-20 06:44:58,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4870575b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:44:58, skipping insertion in model container [2021-11-20 06:44:58,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:44:58" (3/3) ... [2021-11-20 06:44:58,699 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2021-11-20 06:44:58,705 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 06:44:58,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:44:58,706 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-20 06:44:58,706 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 06:44:58,765 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,766 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,766 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,766 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,767 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,767 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,767 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,767 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,768 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,768 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,768 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,768 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,768 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,769 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,769 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,769 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,769 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,770 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,770 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,770 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,770 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,774 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,774 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,774 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,775 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,775 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,775 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,775 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,776 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,776 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,776 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,777 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,777 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,777 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,777 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,777 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,778 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,778 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,778 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,778 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,779 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,779 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,779 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,779 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,780 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,780 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,780 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,780 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,780 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,781 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,781 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,781 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,781 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,782 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,782 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,782 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,782 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,783 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,783 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,783 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,783 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,784 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,784 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,784 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,784 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,784 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,785 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,785 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,785 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,785 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,785 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,786 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,786 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,786 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,786 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,786 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,787 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,787 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,787 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,787 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,787 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,788 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,792 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,793 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,794 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,794 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,795 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,795 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,795 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,801 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,801 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,801 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,801 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,801 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,802 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,802 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,802 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,802 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,803 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,803 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,803 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,803 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,804 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,804 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,804 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,804 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,804 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,805 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,805 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,805 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,805 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,805 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,806 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,806 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,806 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,806 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,809 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,810 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,810 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,810 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,810 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,811 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,811 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,811 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,811 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,812 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,812 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,812 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,814 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,814 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,814 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,814 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,815 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,815 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,815 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,815 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,815 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,816 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,816 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,816 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:44:58,820 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-20 06:44:58,882 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:44:58,891 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:44:58,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 06:44:58,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2021-11-20 06:44:59,060 INFO L129 PetriNetUnfolder]: 8/208 cut-off events. [2021-11-20 06:44:59,060 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 06:44:59,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 8/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 345 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2021-11-20 06:44:59,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2021-11-20 06:44:59,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2021-11-20 06:44:59,121 INFO L129 PetriNetUnfolder]: 0/104 cut-off events. [2021-11-20 06:44:59,121 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 06:44:59,121 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:44:59,122 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:59,123 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:44:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1084366875, now seen corresponding path program 1 times [2021-11-20 06:44:59,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:59,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776978582] [2021-11-20 06:44:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:59,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:59,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:59,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776978582] [2021-11-20 06:44:59,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776978582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:59,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:59,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:44:59,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179767416] [2021-11-20 06:44:59,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:59,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:44:59,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:44:59,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:44:59,908 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2021-11-20 06:44:59,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:59,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:44:59,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2021-11-20 06:44:59,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:01,017 INFO L129 PetriNetUnfolder]: 832/1897 cut-off events. [2021-11-20 06:45:01,018 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-11-20 06:45:01,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1897 events. 832/1897 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11884 event pairs, 187 based on Foata normal form. 17/1861 useless extension candidates. Maximal degree in co-relation 3159. Up to 598 conditions per place. [2021-11-20 06:45:01,054 INFO L132 encePairwiseOnDemand]: 143/163 looper letters, 98 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2021-11-20 06:45:01,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 233 transitions, 762 flow [2021-11-20 06:45:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:45:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-20 06:45:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1547 transitions. [2021-11-20 06:45:01,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6779141104294478 [2021-11-20 06:45:01,089 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1547 transitions. [2021-11-20 06:45:01,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1547 transitions. [2021-11-20 06:45:01,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:01,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1547 transitions. [2021-11-20 06:45:01,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.5) internal successors, (1547), 14 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:01,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:01,151 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:01,154 INFO L186 Difference]: Start difference. First operand has 151 places, 149 transitions, 310 flow. Second operand 14 states and 1547 transitions. [2021-11-20 06:45:01,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 233 transitions, 762 flow [2021-11-20 06:45:01,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 233 transitions, 754 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 06:45:01,173 INFO L242 Difference]: Finished difference. Result has 165 places, 182 transitions, 580 flow [2021-11-20 06:45:01,176 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=580, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2021-11-20 06:45:01,184 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2021-11-20 06:45:01,184 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 580 flow [2021-11-20 06:45:01,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:01,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:01,186 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:01,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:45:01,188 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:01,192 INFO L85 PathProgramCache]: Analyzing trace with hash 234520064, now seen corresponding path program 1 times [2021-11-20 06:45:01,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977019869] [2021-11-20 06:45:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:01,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:01,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:01,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977019869] [2021-11-20 06:45:01,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977019869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:01,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:01,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:45:01,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721288245] [2021-11-20 06:45:01,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:01,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:45:01,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:45:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:45:01,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2021-11-20 06:45:01,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:01,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:01,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2021-11-20 06:45:01,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:02,422 INFO L129 PetriNetUnfolder]: 1083/2490 cut-off events. [2021-11-20 06:45:02,423 INFO L130 PetriNetUnfolder]: For 10451/10549 co-relation queries the response was YES. [2021-11-20 06:45:02,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8825 conditions, 2490 events. 1083/2490 cut-off events. For 10451/10549 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17164 event pairs, 241 based on Foata normal form. 47/2502 useless extension candidates. Maximal degree in co-relation 7682. Up to 841 conditions per place. [2021-11-20 06:45:02,466 INFO L132 encePairwiseOnDemand]: 148/163 looper letters, 70 selfloop transitions, 40 changer transitions 72/272 dead transitions. [2021-11-20 06:45:02,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 272 transitions, 1653 flow [2021-11-20 06:45:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:45:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 06:45:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1225 transitions. [2021-11-20 06:45:02,473 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.683212493028444 [2021-11-20 06:45:02,473 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1225 transitions. [2021-11-20 06:45:02,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1225 transitions. [2021-11-20 06:45:02,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:02,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1225 transitions. [2021-11-20 06:45:02,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.36363636363636) internal successors, (1225), 11 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,490 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,490 INFO L186 Difference]: Start difference. First operand has 165 places, 182 transitions, 580 flow. Second operand 11 states and 1225 transitions. [2021-11-20 06:45:02,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 272 transitions, 1653 flow [2021-11-20 06:45:02,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 272 transitions, 1653 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 06:45:02,531 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 880 flow [2021-11-20 06:45:02,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2021-11-20 06:45:02,533 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2021-11-20 06:45:02,534 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 880 flow [2021-11-20 06:45:02,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,535 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:02,535 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:02,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:45:02,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:02,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash -701385000, now seen corresponding path program 1 times [2021-11-20 06:45:02,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:02,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945477462] [2021-11-20 06:45:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:02,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:02,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945477462] [2021-11-20 06:45:02,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945477462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:02,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:02,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:45:02,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222703177] [2021-11-20 06:45:02,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:02,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:45:02,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:45:02,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:45:02,710 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2021-11-20 06:45:02,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:02,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2021-11-20 06:45:02,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:02,860 INFO L129 PetriNetUnfolder]: 55/293 cut-off events. [2021-11-20 06:45:02,861 INFO L130 PetriNetUnfolder]: For 946/1046 co-relation queries the response was YES. [2021-11-20 06:45:02,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 293 events. 55/293 cut-off events. For 946/1046 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1066 event pairs, 14 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 704. Up to 34 conditions per place. [2021-11-20 06:45:02,866 INFO L132 encePairwiseOnDemand]: 158/163 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2021-11-20 06:45:02,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 124 transitions, 396 flow [2021-11-20 06:45:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:45:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-20 06:45:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2021-11-20 06:45:02,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8711656441717791 [2021-11-20 06:45:02,871 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2021-11-20 06:45:02,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2021-11-20 06:45:02,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:02,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2021-11-20 06:45:02,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,881 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 880 flow. Second operand 6 states and 852 transitions. [2021-11-20 06:45:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 124 transitions, 396 flow [2021-11-20 06:45:02,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 306 flow, removed 40 selfloop flow, removed 15 redundant places. [2021-11-20 06:45:02,888 INFO L242 Difference]: Finished difference. Result has 129 places, 116 transitions, 252 flow [2021-11-20 06:45:02,888 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2021-11-20 06:45:02,889 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, -22 predicate places. [2021-11-20 06:45:02,890 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 252 flow [2021-11-20 06:45:02,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:02,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:02,891 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:02,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:45:02,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:02,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1132502568, now seen corresponding path program 1 times [2021-11-20 06:45:02,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:02,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227352302] [2021-11-20 06:45:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:02,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:04,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:04,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227352302] [2021-11-20 06:45:04,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227352302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:04,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:04,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-20 06:45:04,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892364044] [2021-11-20 06:45:04,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:04,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 06:45:04,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:04,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 06:45:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:45:04,723 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-11-20 06:45:04,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 252 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:04,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:04,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-11-20 06:45:04,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:10,589 INFO L129 PetriNetUnfolder]: 994/2110 cut-off events. [2021-11-20 06:45:10,589 INFO L130 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2021-11-20 06:45:10,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2110 events. 994/2110 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12366 event pairs, 174 based on Foata normal form. 0/2025 useless extension candidates. Maximal degree in co-relation 4246. Up to 549 conditions per place. [2021-11-20 06:45:10,615 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 187 selfloop transitions, 29 changer transitions 0/271 dead transitions. [2021-11-20 06:45:10,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 271 transitions, 1060 flow [2021-11-20 06:45:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:45:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 06:45:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2065 transitions. [2021-11-20 06:45:10,626 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5278629856850716 [2021-11-20 06:45:10,627 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2065 transitions. [2021-11-20 06:45:10,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2065 transitions. [2021-11-20 06:45:10,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:10,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2065 transitions. [2021-11-20 06:45:10,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.04166666666667) internal successors, (2065), 24 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:10,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:10,650 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:10,650 INFO L186 Difference]: Start difference. First operand has 129 places, 116 transitions, 252 flow. Second operand 24 states and 2065 transitions. [2021-11-20 06:45:10,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 271 transitions, 1060 flow [2021-11-20 06:45:10,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 271 transitions, 1053 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 06:45:10,662 INFO L242 Difference]: Finished difference. Result has 161 places, 135 transitions, 418 flow [2021-11-20 06:45:10,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=418, PETRI_PLACES=161, PETRI_TRANSITIONS=135} [2021-11-20 06:45:10,665 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 10 predicate places. [2021-11-20 06:45:10,665 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 135 transitions, 418 flow [2021-11-20 06:45:10,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:10,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:10,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:10,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:45:10,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash -28470102, now seen corresponding path program 2 times [2021-11-20 06:45:10,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:10,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647084921] [2021-11-20 06:45:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:10,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:11,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:11,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647084921] [2021-11-20 06:45:11,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647084921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:11,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:11,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 06:45:11,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022032850] [2021-11-20 06:45:11,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:11,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:45:11,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:11,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:45:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:45:11,709 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-11-20 06:45:11,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 135 transitions, 418 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:11,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:11,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-11-20 06:45:11,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:13,768 INFO L129 PetriNetUnfolder]: 553/1510 cut-off events. [2021-11-20 06:45:13,768 INFO L130 PetriNetUnfolder]: For 756/785 co-relation queries the response was YES. [2021-11-20 06:45:13,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 1510 events. 553/1510 cut-off events. For 756/785 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9274 event pairs, 210 based on Foata normal form. 20/1484 useless extension candidates. Maximal degree in co-relation 3436. Up to 502 conditions per place. [2021-11-20 06:45:13,789 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 132 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2021-11-20 06:45:13,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 226 transitions, 1064 flow [2021-11-20 06:45:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:45:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:45:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1869 transitions. [2021-11-20 06:45:13,799 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5460122699386503 [2021-11-20 06:45:13,799 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1869 transitions. [2021-11-20 06:45:13,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1869 transitions. [2021-11-20 06:45:13,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:13,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1869 transitions. [2021-11-20 06:45:13,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.0) internal successors, (1869), 21 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:13,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:13,821 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:13,821 INFO L186 Difference]: Start difference. First operand has 161 places, 135 transitions, 418 flow. Second operand 21 states and 1869 transitions. [2021-11-20 06:45:13,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 226 transitions, 1064 flow [2021-11-20 06:45:13,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 226 transitions, 1044 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-20 06:45:13,832 INFO L242 Difference]: Finished difference. Result has 183 places, 153 transitions, 602 flow [2021-11-20 06:45:13,833 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=602, PETRI_PLACES=183, PETRI_TRANSITIONS=153} [2021-11-20 06:45:13,834 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2021-11-20 06:45:13,835 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 153 transitions, 602 flow [2021-11-20 06:45:13,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:13,836 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:13,836 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:13,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:45:13,837 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:13,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash -584894136, now seen corresponding path program 3 times [2021-11-20 06:45:13,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:13,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20702126] [2021-11-20 06:45:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:13,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:14,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:14,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20702126] [2021-11-20 06:45:14,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20702126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:14,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:14,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 06:45:14,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602962764] [2021-11-20 06:45:14,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:14,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:45:14,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:14,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:45:14,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:45:14,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-11-20 06:45:14,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 153 transitions, 602 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:14,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:14,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-11-20 06:45:14,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:16,821 INFO L129 PetriNetUnfolder]: 958/2420 cut-off events. [2021-11-20 06:45:16,822 INFO L130 PetriNetUnfolder]: For 1916/1950 co-relation queries the response was YES. [2021-11-20 06:45:16,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6249 conditions, 2420 events. 958/2420 cut-off events. For 1916/1950 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17189 event pairs, 125 based on Foata normal form. 10/2370 useless extension candidates. Maximal degree in co-relation 6218. Up to 510 conditions per place. [2021-11-20 06:45:16,855 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 145 selfloop transitions, 51 changer transitions 0/258 dead transitions. [2021-11-20 06:45:16,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 258 transitions, 1472 flow [2021-11-20 06:45:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:45:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:45:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1696 transitions. [2021-11-20 06:45:16,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5476267355505328 [2021-11-20 06:45:16,866 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1696 transitions. [2021-11-20 06:45:16,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1696 transitions. [2021-11-20 06:45:16,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:16,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1696 transitions. [2021-11-20 06:45:16,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.26315789473684) internal successors, (1696), 19 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:16,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:16,887 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:16,887 INFO L186 Difference]: Start difference. First operand has 183 places, 153 transitions, 602 flow. Second operand 19 states and 1696 transitions. [2021-11-20 06:45:16,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 258 transitions, 1472 flow [2021-11-20 06:45:16,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 258 transitions, 1444 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-11-20 06:45:16,908 INFO L242 Difference]: Finished difference. Result has 203 places, 179 transitions, 957 flow [2021-11-20 06:45:16,909 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=957, PETRI_PLACES=203, PETRI_TRANSITIONS=179} [2021-11-20 06:45:16,913 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 52 predicate places. [2021-11-20 06:45:16,913 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 179 transitions, 957 flow [2021-11-20 06:45:16,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:16,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:16,916 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:16,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:45:16,917 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:16,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1627272502, now seen corresponding path program 4 times [2021-11-20 06:45:16,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:16,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027968881] [2021-11-20 06:45:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:16,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:17,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:17,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027968881] [2021-11-20 06:45:17,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027968881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:17,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:17,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 06:45:17,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893756631] [2021-11-20 06:45:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:17,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:45:17,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:17,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:45:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:45:17,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-11-20 06:45:17,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 179 transitions, 957 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:17,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:17,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-11-20 06:45:17,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:20,541 INFO L129 PetriNetUnfolder]: 1573/4291 cut-off events. [2021-11-20 06:45:20,542 INFO L130 PetriNetUnfolder]: For 6609/6698 co-relation queries the response was YES. [2021-11-20 06:45:20,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12510 conditions, 4291 events. 1573/4291 cut-off events. For 6609/6698 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 36406 event pairs, 266 based on Foata normal form. 24/4203 useless extension candidates. Maximal degree in co-relation 12471. Up to 1273 conditions per place. [2021-11-20 06:45:20,602 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 201 selfloop transitions, 65 changer transitions 0/328 dead transitions. [2021-11-20 06:45:20,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 328 transitions, 2443 flow [2021-11-20 06:45:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:45:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:45:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-11-20 06:45:20,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-11-20 06:45:20,612 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-11-20 06:45:20,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-11-20 06:45:20,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:20,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-11-20 06:45:20,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:20,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:20,634 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:20,634 INFO L186 Difference]: Start difference. First operand has 203 places, 179 transitions, 957 flow. Second operand 21 states and 1877 transitions. [2021-11-20 06:45:20,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 328 transitions, 2443 flow [2021-11-20 06:45:20,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 328 transitions, 2400 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-11-20 06:45:20,702 INFO L242 Difference]: Finished difference. Result has 225 places, 217 transitions, 1506 flow [2021-11-20 06:45:20,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1506, PETRI_PLACES=225, PETRI_TRANSITIONS=217} [2021-11-20 06:45:20,704 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 74 predicate places. [2021-11-20 06:45:20,704 INFO L470 AbstractCegarLoop]: Abstraction has has 225 places, 217 transitions, 1506 flow [2021-11-20 06:45:20,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:20,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:20,706 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:20,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:45:20,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1939824048, now seen corresponding path program 5 times [2021-11-20 06:45:20,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:20,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918368258] [2021-11-20 06:45:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:20,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:21,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:21,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918368258] [2021-11-20 06:45:21,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918368258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:21,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:21,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 06:45:21,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568818003] [2021-11-20 06:45:21,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:21,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:45:21,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:21,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:45:21,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:45:21,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-11-20 06:45:21,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 217 transitions, 1506 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:21,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:21,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-11-20 06:45:21,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:24,497 INFO L129 PetriNetUnfolder]: 1986/5641 cut-off events. [2021-11-20 06:45:24,497 INFO L130 PetriNetUnfolder]: For 12228/12327 co-relation queries the response was YES. [2021-11-20 06:45:24,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17156 conditions, 5641 events. 1986/5641 cut-off events. For 12228/12327 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 51057 event pairs, 805 based on Foata normal form. 36/5526 useless extension candidates. Maximal degree in co-relation 17106. Up to 1721 conditions per place. [2021-11-20 06:45:24,579 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 212 selfloop transitions, 84 changer transitions 0/358 dead transitions. [2021-11-20 06:45:24,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 358 transitions, 3081 flow [2021-11-20 06:45:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:45:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:45:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-11-20 06:45:24,589 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-11-20 06:45:24,589 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-11-20 06:45:24,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-11-20 06:45:24,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:24,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-11-20 06:45:24,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:24,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:24,611 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:24,612 INFO L186 Difference]: Start difference. First operand has 225 places, 217 transitions, 1506 flow. Second operand 21 states and 1877 transitions. [2021-11-20 06:45:24,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 358 transitions, 3081 flow [2021-11-20 06:45:24,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 358 transitions, 3014 flow, removed 24 selfloop flow, removed 6 redundant places. [2021-11-20 06:45:24,729 INFO L242 Difference]: Finished difference. Result has 250 places, 253 transitions, 2158 flow [2021-11-20 06:45:24,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2158, PETRI_PLACES=250, PETRI_TRANSITIONS=253} [2021-11-20 06:45:24,731 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 99 predicate places. [2021-11-20 06:45:24,731 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 253 transitions, 2158 flow [2021-11-20 06:45:24,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:24,733 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:24,734 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:24,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:45:24,734 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:24,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:24,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1806322040, now seen corresponding path program 6 times [2021-11-20 06:45:24,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:24,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169276453] [2021-11-20 06:45:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:24,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:25,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:25,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169276453] [2021-11-20 06:45:25,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169276453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:25,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:25,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 06:45:25,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086762323] [2021-11-20 06:45:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:25,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:45:25,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:45:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:45:25,537 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-11-20 06:45:25,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 253 transitions, 2158 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:25,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:25,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-11-20 06:45:25,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:28,137 INFO L129 PetriNetUnfolder]: 1992/5756 cut-off events. [2021-11-20 06:45:28,137 INFO L130 PetriNetUnfolder]: For 17341/17436 co-relation queries the response was YES. [2021-11-20 06:45:28,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18637 conditions, 5756 events. 1992/5756 cut-off events. For 17341/17436 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 52387 event pairs, 983 based on Foata normal form. 36/5635 useless extension candidates. Maximal degree in co-relation 18575. Up to 2616 conditions per place. [2021-11-20 06:45:28,198 INFO L132 encePairwiseOnDemand]: 142/163 looper letters, 195 selfloop transitions, 94 changer transitions 0/351 dead transitions. [2021-11-20 06:45:28,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 351 transitions, 3432 flow [2021-11-20 06:45:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:45:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 06:45:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1774 transitions. [2021-11-20 06:45:28,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5441717791411043 [2021-11-20 06:45:28,207 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1774 transitions. [2021-11-20 06:45:28,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1774 transitions. [2021-11-20 06:45:28,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:28,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1774 transitions. [2021-11-20 06:45:28,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 88.7) internal successors, (1774), 20 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:28,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:28,224 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:28,225 INFO L186 Difference]: Start difference. First operand has 250 places, 253 transitions, 2158 flow. Second operand 20 states and 1774 transitions. [2021-11-20 06:45:28,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 351 transitions, 3432 flow [2021-11-20 06:45:28,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 351 transitions, 3363 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-11-20 06:45:28,383 INFO L242 Difference]: Finished difference. Result has 276 places, 276 transitions, 2720 flow [2021-11-20 06:45:28,384 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2720, PETRI_PLACES=276, PETRI_TRANSITIONS=276} [2021-11-20 06:45:28,385 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 125 predicate places. [2021-11-20 06:45:28,385 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 276 transitions, 2720 flow [2021-11-20 06:45:28,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:28,386 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:28,387 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:28,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:45:28,388 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:28,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2096776390, now seen corresponding path program 7 times [2021-11-20 06:45:28,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:28,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011836957] [2021-11-20 06:45:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:28,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:30,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:30,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011836957] [2021-11-20 06:45:30,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011836957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:30,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:30,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-20 06:45:30,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962494616] [2021-11-20 06:45:30,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:30,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 06:45:30,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 06:45:30,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:45:30,175 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-11-20 06:45:30,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 276 transitions, 2720 flow. Second operand has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:30,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:30,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-11-20 06:45:30,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:41,194 INFO L129 PetriNetUnfolder]: 3863/9755 cut-off events. [2021-11-20 06:45:41,194 INFO L130 PetriNetUnfolder]: For 34280/34389 co-relation queries the response was YES. [2021-11-20 06:45:41,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33109 conditions, 9755 events. 3863/9755 cut-off events. For 34280/34389 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 90943 event pairs, 273 based on Foata normal form. 38/9699 useless extension candidates. Maximal degree in co-relation 33034. Up to 1915 conditions per place. [2021-11-20 06:45:41,335 INFO L132 encePairwiseOnDemand]: 133/163 looper letters, 330 selfloop transitions, 181 changer transitions 0/566 dead transitions. [2021-11-20 06:45:41,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 566 transitions, 5814 flow [2021-11-20 06:45:41,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 06:45:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 06:45:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3133 transitions. [2021-11-20 06:45:41,344 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.519482672856906 [2021-11-20 06:45:41,344 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3133 transitions. [2021-11-20 06:45:41,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3133 transitions. [2021-11-20 06:45:41,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:41,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3133 transitions. [2021-11-20 06:45:41,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.67567567567568) internal successors, (3133), 37 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:41,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:41,368 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:41,368 INFO L186 Difference]: Start difference. First operand has 276 places, 276 transitions, 2720 flow. Second operand 37 states and 3133 transitions. [2021-11-20 06:45:41,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 566 transitions, 5814 flow [2021-11-20 06:45:41,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 566 transitions, 5696 flow, removed 54 selfloop flow, removed 5 redundant places. [2021-11-20 06:45:41,855 INFO L242 Difference]: Finished difference. Result has 327 places, 365 transitions, 4432 flow [2021-11-20 06:45:41,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2626, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4432, PETRI_PLACES=327, PETRI_TRANSITIONS=365} [2021-11-20 06:45:41,858 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 176 predicate places. [2021-11-20 06:45:41,858 INFO L470 AbstractCegarLoop]: Abstraction has has 327 places, 365 transitions, 4432 flow [2021-11-20 06:45:41,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:41,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:41,860 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:41,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:45:41,862 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:41,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2105444306, now seen corresponding path program 8 times [2021-11-20 06:45:41,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:41,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974642260] [2021-11-20 06:45:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:41,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:42,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:42,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974642260] [2021-11-20 06:45:42,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974642260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:42,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:42,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 06:45:42,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657480558] [2021-11-20 06:45:42,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:42,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:45:42,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:42,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:45:42,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:45:42,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-11-20 06:45:42,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 365 transitions, 4432 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:42,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:42,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-11-20 06:45:42,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:46,980 INFO L129 PetriNetUnfolder]: 2912/8682 cut-off events. [2021-11-20 06:45:46,980 INFO L130 PetriNetUnfolder]: For 44536/44717 co-relation queries the response was YES. [2021-11-20 06:45:47,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32112 conditions, 8682 events. 2912/8682 cut-off events. For 44536/44717 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 88902 event pairs, 797 based on Foata normal form. 67/8561 useless extension candidates. Maximal degree in co-relation 32018. Up to 2903 conditions per place. [2021-11-20 06:45:47,133 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 315 selfloop transitions, 133 changer transitions 0/528 dead transitions. [2021-11-20 06:45:47,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 528 transitions, 7123 flow [2021-11-20 06:45:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:45:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:45:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-11-20 06:45:47,139 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-11-20 06:45:47,139 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-11-20 06:45:47,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-11-20 06:45:47,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:45:47,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-11-20 06:45:47,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:47,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:47,154 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:47,155 INFO L186 Difference]: Start difference. First operand has 327 places, 365 transitions, 4432 flow. Second operand 21 states and 1877 transitions. [2021-11-20 06:45:47,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 528 transitions, 7123 flow [2021-11-20 06:45:47,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 528 transitions, 6872 flow, removed 96 selfloop flow, removed 9 redundant places. [2021-11-20 06:45:47,729 INFO L242 Difference]: Finished difference. Result has 347 places, 404 transitions, 5428 flow [2021-11-20 06:45:47,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=4227, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5428, PETRI_PLACES=347, PETRI_TRANSITIONS=404} [2021-11-20 06:45:47,731 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 196 predicate places. [2021-11-20 06:45:47,732 INFO L470 AbstractCegarLoop]: Abstraction has has 347 places, 404 transitions, 5428 flow [2021-11-20 06:45:47,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:47,733 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:45:47,733 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:45:47,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:45:47,733 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:45:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:45:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash -291252162, now seen corresponding path program 9 times [2021-11-20 06:45:47,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:45:47,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691388310] [2021-11-20 06:45:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:45:47,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:45:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:45:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:45:49,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:45:49,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691388310] [2021-11-20 06:45:49,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691388310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:45:49,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:45:49,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-20 06:45:49,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673847540] [2021-11-20 06:45:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:45:49,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 06:45:49,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:45:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 06:45:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:45:49,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-11-20 06:45:49,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 404 transitions, 5428 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:45:49,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:45:49,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-11-20 06:45:49,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:45:59,855 INFO L129 PetriNetUnfolder]: 7590/19317 cut-off events. [2021-11-20 06:45:59,855 INFO L130 PetriNetUnfolder]: For 120051/120095 co-relation queries the response was YES. [2021-11-20 06:46:00,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75080 conditions, 19317 events. 7590/19317 cut-off events. For 120051/120095 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 207092 event pairs, 3320 based on Foata normal form. 27/19034 useless extension candidates. Maximal degree in co-relation 74976. Up to 6318 conditions per place. [2021-11-20 06:46:00,266 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 479 selfloop transitions, 158 changer transitions 0/692 dead transitions. [2021-11-20 06:46:00,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 692 transitions, 10151 flow [2021-11-20 06:46:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:46:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 06:46:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2067 transitions. [2021-11-20 06:46:00,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5283742331288344 [2021-11-20 06:46:00,272 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2067 transitions. [2021-11-20 06:46:00,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2067 transitions. [2021-11-20 06:46:00,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:46:00,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2067 transitions. [2021-11-20 06:46:00,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.125) internal successors, (2067), 24 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:00,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:00,288 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:00,288 INFO L186 Difference]: Start difference. First operand has 347 places, 404 transitions, 5428 flow. Second operand 24 states and 2067 transitions. [2021-11-20 06:46:00,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 692 transitions, 10151 flow [2021-11-20 06:46:01,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 692 transitions, 9818 flow, removed 114 selfloop flow, removed 7 redundant places. [2021-11-20 06:46:01,721 INFO L242 Difference]: Finished difference. Result has 379 places, 466 transitions, 6937 flow [2021-11-20 06:46:01,722 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=5233, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6937, PETRI_PLACES=379, PETRI_TRANSITIONS=466} [2021-11-20 06:46:01,723 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 228 predicate places. [2021-11-20 06:46:01,723 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 466 transitions, 6937 flow [2021-11-20 06:46:01,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:01,724 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:46:01,724 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:01,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:46:01,724 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:46:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1715822910, now seen corresponding path program 10 times [2021-11-20 06:46:01,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:01,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588301447] [2021-11-20 06:46:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:01,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:46:02,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:02,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588301447] [2021-11-20 06:46:02,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588301447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:46:02,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:46:02,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 06:46:02,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670662627] [2021-11-20 06:46:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:46:02,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:46:02,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:46:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:46:02,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-11-20 06:46:02,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 466 transitions, 6937 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:02,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:46:02,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-11-20 06:46:02,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:46:10,157 INFO L129 PetriNetUnfolder]: 5350/15429 cut-off events. [2021-11-20 06:46:10,157 INFO L130 PetriNetUnfolder]: For 99140/99533 co-relation queries the response was YES. [2021-11-20 06:46:10,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60214 conditions, 15429 events. 5350/15429 cut-off events. For 99140/99533 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 174637 event pairs, 514 based on Foata normal form. 140/15319 useless extension candidates. Maximal degree in co-relation 60094. Up to 3398 conditions per place. [2021-11-20 06:46:10,532 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 273 selfloop transitions, 272 changer transitions 0/631 dead transitions. [2021-11-20 06:46:10,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 631 transitions, 9975 flow [2021-11-20 06:46:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:46:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:46:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1886 transitions. [2021-11-20 06:46:10,538 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5509786736780602 [2021-11-20 06:46:10,538 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1886 transitions. [2021-11-20 06:46:10,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1886 transitions. [2021-11-20 06:46:10,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:46:10,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1886 transitions. [2021-11-20 06:46:10,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.80952380952381) internal successors, (1886), 21 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:10,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:10,552 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:10,552 INFO L186 Difference]: Start difference. First operand has 379 places, 466 transitions, 6937 flow. Second operand 21 states and 1886 transitions. [2021-11-20 06:46:10,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 631 transitions, 9975 flow [2021-11-20 06:46:12,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 631 transitions, 9778 flow, removed 93 selfloop flow, removed 5 redundant places. [2021-11-20 06:46:12,131 INFO L242 Difference]: Finished difference. Result has 400 places, 519 transitions, 8748 flow [2021-11-20 06:46:12,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=6750, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8748, PETRI_PLACES=400, PETRI_TRANSITIONS=519} [2021-11-20 06:46:12,134 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 249 predicate places. [2021-11-20 06:46:12,134 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 519 transitions, 8748 flow [2021-11-20 06:46:12,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:12,135 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:46:12,135 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:12,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:46:12,136 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:46:12,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:12,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1585435628, now seen corresponding path program 11 times [2021-11-20 06:46:12,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:12,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635634659] [2021-11-20 06:46:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:12,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:46:13,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:13,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635634659] [2021-11-20 06:46:13,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635634659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:46:13,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:46:13,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-20 06:46:13,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282969981] [2021-11-20 06:46:13,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:46:13,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 06:46:13,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 06:46:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:46:13,458 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-11-20 06:46:13,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 519 transitions, 8748 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:13,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:46:13,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-11-20 06:46:13,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:46:28,717 INFO L129 PetriNetUnfolder]: 9793/25385 cut-off events. [2021-11-20 06:46:28,718 INFO L130 PetriNetUnfolder]: For 207385/207467 co-relation queries the response was YES. [2021-11-20 06:46:29,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106432 conditions, 25385 events. 9793/25385 cut-off events. For 207385/207467 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 289350 event pairs, 4527 based on Foata normal form. 42/25033 useless extension candidates. Maximal degree in co-relation 106305. Up to 8666 conditions per place. [2021-11-20 06:46:29,641 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 628 selfloop transitions, 186 changer transitions 0/869 dead transitions. [2021-11-20 06:46:29,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 869 transitions, 15499 flow [2021-11-20 06:46:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:46:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 06:46:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2085 transitions. [2021-11-20 06:46:29,646 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5329754601226994 [2021-11-20 06:46:29,647 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2085 transitions. [2021-11-20 06:46:29,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2085 transitions. [2021-11-20 06:46:29,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:46:29,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2085 transitions. [2021-11-20 06:46:29,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.875) internal successors, (2085), 24 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:29,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:29,663 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:29,663 INFO L186 Difference]: Start difference. First operand has 400 places, 519 transitions, 8748 flow. Second operand 24 states and 2085 transitions. [2021-11-20 06:46:29,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 869 transitions, 15499 flow [2021-11-20 06:46:32,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 869 transitions, 15089 flow, removed 106 selfloop flow, removed 8 redundant places. [2021-11-20 06:46:32,836 INFO L242 Difference]: Finished difference. Result has 431 places, 582 transitions, 10570 flow [2021-11-20 06:46:32,837 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=8528, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=10570, PETRI_PLACES=431, PETRI_TRANSITIONS=582} [2021-11-20 06:46:32,837 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 280 predicate places. [2021-11-20 06:46:32,837 INFO L470 AbstractCegarLoop]: Abstraction has has 431 places, 582 transitions, 10570 flow [2021-11-20 06:46:32,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:32,839 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:46:32,839 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:32,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:46:32,839 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:46:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2081748640, now seen corresponding path program 12 times [2021-11-20 06:46:32,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:32,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842781122] [2021-11-20 06:46:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:32,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:46:34,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:34,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842781122] [2021-11-20 06:46:34,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842781122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:46:34,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:46:34,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-20 06:46:34,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826290419] [2021-11-20 06:46:34,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:46:34,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 06:46:34,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:34,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 06:46:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:46:34,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-11-20 06:46:34,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 582 transitions, 10570 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:34,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:46:34,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-11-20 06:46:34,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:46:51,410 INFO L129 PetriNetUnfolder]: 9791/25233 cut-off events. [2021-11-20 06:46:51,410 INFO L130 PetriNetUnfolder]: For 236809/236889 co-relation queries the response was YES. [2021-11-20 06:46:52,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109407 conditions, 25233 events. 9791/25233 cut-off events. For 236809/236889 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 287409 event pairs, 2692 based on Foata normal form. 23/24842 useless extension candidates. Maximal degree in co-relation 109264. Up to 13734 conditions per place. [2021-11-20 06:46:52,163 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 549 selfloop transitions, 220 changer transitions 0/824 dead transitions. [2021-11-20 06:46:52,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 824 transitions, 15262 flow [2021-11-20 06:46:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 06:46:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-20 06:46:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2150 transitions. [2021-11-20 06:46:52,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5276073619631901 [2021-11-20 06:46:52,167 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2150 transitions. [2021-11-20 06:46:52,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2150 transitions. [2021-11-20 06:46:52,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:46:52,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2150 transitions. [2021-11-20 06:46:52,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 86.0) internal successors, (2150), 25 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:52,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:52,183 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:52,183 INFO L186 Difference]: Start difference. First operand has 431 places, 582 transitions, 10570 flow. Second operand 25 states and 2150 transitions. [2021-11-20 06:46:52,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 824 transitions, 15262 flow [2021-11-20 06:46:55,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 824 transitions, 14982 flow, removed 133 selfloop flow, removed 5 redundant places. [2021-11-20 06:46:55,479 INFO L242 Difference]: Finished difference. Result has 458 places, 600 transitions, 11432 flow [2021-11-20 06:46:55,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=10314, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11432, PETRI_PLACES=458, PETRI_TRANSITIONS=600} [2021-11-20 06:46:55,481 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 307 predicate places. [2021-11-20 06:46:55,482 INFO L470 AbstractCegarLoop]: Abstraction has has 458 places, 600 transitions, 11432 flow [2021-11-20 06:46:55,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:55,483 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:46:55,483 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:55,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:46:55,484 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:46:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash 28347500, now seen corresponding path program 13 times [2021-11-20 06:46:55,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:55,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762903887] [2021-11-20 06:46:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:55,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:46:56,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:56,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762903887] [2021-11-20 06:46:56,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762903887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:46:56,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:46:56,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 06:46:56,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062239993] [2021-11-20 06:46:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:46:56,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:46:56,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:46:56,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:46:56,229 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-11-20 06:46:56,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 600 transitions, 11432 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:56,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:46:56,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-11-20 06:46:56,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand