./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro --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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:51:52,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:51:52,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:51:52,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:51:52,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:51:52,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:51:52,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:51:52,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:51:52,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:51:52,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:51:52,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:51:52,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:51:52,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:51:52,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:51:52,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:51:52,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:51:52,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:51:52,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:51:52,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:51:52,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:51:52,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:51:52,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:51:52,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:51:52,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:51:52,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:51:52,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:51:52,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:51:52,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:51:52,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:51:52,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:51:52,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:51:52,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:51:52,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:51:52,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:51:52,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:51:52,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:51:52,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:51:52,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:51:52,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:51:52,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:51:52,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:51:52,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:51:52,492 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:51:52,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:51:52,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:51:52,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:51:52,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:51:52,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:51:52,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:51:52,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:51:52,496 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:51:52,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:51:52,498 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:51:52,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:51:52,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:51:52,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:51:52,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:51:52,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:51:52,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:51:52,499 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:51:52,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:51:52,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:51:52,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:51:52,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:51:52,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:51:52,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:51:52,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:51:52,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:51:52,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:51:52,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:51:52,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:51:52,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:51:52,503 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:51:52,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:51:52,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:51:52,504 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_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2022-11-18 20:51:52,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:51:52,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:51:52,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:51:52,869 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:51:52,892 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:51:52,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2022-11-18 20:51:52,974 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/data/36c1224b8/610513cb04fe432aaad22af832420904/FLAG1550dd149 [2022-11-18 20:51:53,599 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:51:53,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2022-11-18 20:51:53,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/data/36c1224b8/610513cb04fe432aaad22af832420904/FLAG1550dd149 [2022-11-18 20:51:53,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/data/36c1224b8/610513cb04fe432aaad22af832420904 [2022-11-18 20:51:53,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:51:53,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:51:53,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:51:53,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:51:53,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:51:53,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:53" (1/1) ... [2022-11-18 20:51:53,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16614e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53, skipping insertion in model container [2022-11-18 20:51:53,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:53" (1/1) ... [2022-11-18 20:51:53,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:51:53,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:51:54,157 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 20:51:54,742 WARN L234 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_c17e8cee-a910-406a-a5bf-8974ca769a2a/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-11-18 20:51:54,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:51:54,794 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:51:54,806 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 20:51:54,874 WARN L234 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_c17e8cee-a910-406a-a5bf-8974ca769a2a/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-11-18 20:51:54,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:51:55,050 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:51:55,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55 WrapperNode [2022-11-18 20:51:55,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:51:55,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:51:55,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:51:55,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:51:55,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,125 INFO L138 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-11-18 20:51:55,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:51:55,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:51:55,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:51:55,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:51:55,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:51:55,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:51:55,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:51:55,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:51:55,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (1/1) ... [2022-11-18 20:51:55,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:51:55,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:51:55,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:51:55,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e8cee-a910-406a-a5bf-8974ca769a2a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:51:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:51:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:51:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:51:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:51:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:51:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:51:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:51:55,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:51:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-18 20:51:55,279 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-18 20:51:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:51:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:51:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:51:55,281 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:51:55,669 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:51:55,671 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:51:55,971 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:51:55,991 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:51:55,991 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:51:55,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:55 BoogieIcfgContainer [2022-11-18 20:51:55,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:51:55,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:51:55,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:51:56,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:51:56,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:51:53" (1/3) ... [2022-11-18 20:51:56,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eadd3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:56, skipping insertion in model container [2022-11-18 20:51:56,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:55" (2/3) ... [2022-11-18 20:51:56,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eadd3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:56, skipping insertion in model container [2022-11-18 20:51:56,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:55" (3/3) ... [2022-11-18 20:51:56,011 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2022-11-18 20:51:56,020 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:51:56,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:51:56,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:51:56,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:51:56,117 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:51:56,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2022-11-18 20:51:56,266 INFO L130 PetriNetUnfolder]: 10/231 cut-off events. [2022-11-18 20:51:56,266 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:51:56,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 10/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2022-11-18 20:51:56,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2022-11-18 20:51:56,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2022-11-18 20:51:56,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:51:56,300 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b9a2a3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:51:56,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-18 20:51:56,318 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-11-18 20:51:56,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:51:56,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:56,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:56,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:51:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1465795188, now seen corresponding path program 1 times [2022-11-18 20:51:56,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:56,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970507669] [2022-11-18 20:51:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:56,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:57,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:57,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970507669] [2022-11-18 20:51:57,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970507669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:57,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:57,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:51:57,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564744301] [2022-11-18 20:51:57,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:57,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:51:57,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:57,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:51:57,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:51:57,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-11-18 20:51:57,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:57,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:57,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-11-18 20:51:57,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:57,954 INFO L130 PetriNetUnfolder]: 361/968 cut-off events. [2022-11-18 20:51:57,954 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 20:51:57,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 968 events. 361/968 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5119 event pairs, 216 based on Foata normal form. 20/935 useless extension candidates. Maximal degree in co-relation 1412. Up to 397 conditions per place. [2022-11-18 20:51:57,972 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 53 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2022-11-18 20:51:57,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 490 flow [2022-11-18 20:51:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:51:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:51:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2022-11-18 20:51:58,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6314217443249701 [2022-11-18 20:51:58,001 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2022-11-18 20:51:58,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2022-11-18 20:51:58,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:58,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2022-11-18 20:51:58,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,028 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,030 INFO L175 Difference]: Start difference. First operand has 172 places, 172 transitions, 356 flow. Second operand 9 states and 1057 transitions. [2022-11-18 20:51:58,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 490 flow [2022-11-18 20:51:58,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:51:58,043 INFO L231 Difference]: Finished difference. Result has 170 places, 161 transitions, 367 flow [2022-11-18 20:51:58,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-11-18 20:51:58,049 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2022-11-18 20:51:58,050 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 367 flow [2022-11-18 20:51:58,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:58,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:51:58,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:51:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash 193261387, now seen corresponding path program 1 times [2022-11-18 20:51:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:58,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070439316] [2022-11-18 20:51:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:58,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:58,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070439316] [2022-11-18 20:51:58,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070439316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:58,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:58,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:51:58,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706852213] [2022-11-18 20:51:58,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:58,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:51:58,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:58,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:51:58,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:51:58,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-11-18 20:51:58,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:58,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-11-18 20:51:58,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:58,956 INFO L130 PetriNetUnfolder]: 361/972 cut-off events. [2022-11-18 20:51:58,956 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-18 20:51:58,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 972 events. 361/972 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5159 event pairs, 120 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 695. Up to 261 conditions per place. [2022-11-18 20:51:58,963 INFO L137 encePairwiseOnDemand]: 167/186 looper letters, 61 selfloop transitions, 18 changer transitions 1/176 dead transitions. [2022-11-18 20:51:58,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 559 flow [2022-11-18 20:51:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:51:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:51:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2022-11-18 20:51:58,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6295698924731182 [2022-11-18 20:51:58,967 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2022-11-18 20:51:58,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2022-11-18 20:51:58,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:58,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2022-11-18 20:51:58,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.1) internal successors, (1171), 10 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,977 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,977 INFO L175 Difference]: Start difference. First operand has 170 places, 161 transitions, 367 flow. Second operand 10 states and 1171 transitions. [2022-11-18 20:51:58,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 559 flow [2022-11-18 20:51:58,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 530 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:51:58,984 INFO L231 Difference]: Finished difference. Result has 171 places, 160 transitions, 378 flow [2022-11-18 20:51:58,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2022-11-18 20:51:58,985 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, -1 predicate places. [2022-11-18 20:51:58,986 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 378 flow [2022-11-18 20:51:58,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:58,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:58,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:51:58,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:51:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1503918419, now seen corresponding path program 1 times [2022-11-18 20:51:58,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:58,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424565415] [2022-11-18 20:51:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:58,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:59,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424565415] [2022-11-18 20:51:59,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424565415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:59,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:59,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:51:59,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307252121] [2022-11-18 20:51:59,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:59,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:51:59,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:59,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:51:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:51:59,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-11-18 20:51:59,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:59,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:59,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-11-18 20:51:59,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:00,124 INFO L130 PetriNetUnfolder]: 832/1931 cut-off events. [2022-11-18 20:52:00,124 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-11-18 20:52:00,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3674 conditions, 1931 events. 832/1931 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11832 event pairs, 169 based on Foata normal form. 32/1930 useless extension candidates. Maximal degree in co-relation 968. Up to 499 conditions per place. [2022-11-18 20:52:00,139 INFO L137 encePairwiseOnDemand]: 165/186 looper letters, 100 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2022-11-18 20:52:00,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 862 flow [2022-11-18 20:52:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:52:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:52:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2022-11-18 20:52:00,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6368899917287014 [2022-11-18 20:52:00,145 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2022-11-18 20:52:00,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2022-11-18 20:52:00,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:00,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2022-11-18 20:52:00,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.46153846153847) internal successors, (1540), 13 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:00,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:00,160 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:00,161 INFO L175 Difference]: Start difference. First operand has 171 places, 160 transitions, 378 flow. Second operand 13 states and 1540 transitions. [2022-11-18 20:52:00,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 862 flow [2022-11-18 20:52:00,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:52:00,172 INFO L231 Difference]: Finished difference. Result has 183 places, 197 transitions, 648 flow [2022-11-18 20:52:00,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=648, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2022-11-18 20:52:00,175 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 11 predicate places. [2022-11-18 20:52:00,175 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 648 flow [2022-11-18 20:52:00,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:00,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:00,177 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:00,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:52:00,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:00,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1628560954, now seen corresponding path program 1 times [2022-11-18 20:52:00,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:00,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697984530] [2022-11-18 20:52:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:00,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:00,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697984530] [2022-11-18 20:52:00,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697984530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:00,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:00,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:52:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182264898] [2022-11-18 20:52:00,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:00,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:52:00,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:52:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:52:00,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-11-18 20:52:00,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:00,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:00,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-11-18 20:52:00,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:01,543 INFO L130 PetriNetUnfolder]: 1085/2496 cut-off events. [2022-11-18 20:52:01,544 INFO L131 PetriNetUnfolder]: For 10877/10945 co-relation queries the response was YES. [2022-11-18 20:52:01,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8992 conditions, 2496 events. 1085/2496 cut-off events. For 10877/10945 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16657 event pairs, 218 based on Foata normal form. 47/2510 useless extension candidates. Maximal degree in co-relation 7714. Up to 732 conditions per place. [2022-11-18 20:52:01,568 INFO L137 encePairwiseOnDemand]: 167/186 looper letters, 74 selfloop transitions, 48 changer transitions 69/286 dead transitions. [2022-11-18 20:52:01,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 286 transitions, 1732 flow [2022-11-18 20:52:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:52:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:52:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1307 transitions. [2022-11-18 20:52:01,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6388074291300098 [2022-11-18 20:52:01,573 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1307 transitions. [2022-11-18 20:52:01,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1307 transitions. [2022-11-18 20:52:01,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:01,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1307 transitions. [2022-11-18 20:52:01,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.81818181818181) internal successors, (1307), 11 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,584 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,584 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 648 flow. Second operand 11 states and 1307 transitions. [2022-11-18 20:52:01,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 286 transitions, 1732 flow [2022-11-18 20:52:01,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 286 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:52:01,609 INFO L231 Difference]: Finished difference. Result has 201 places, 203 transitions, 961 flow [2022-11-18 20:52:01,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=961, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2022-11-18 20:52:01,611 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 29 predicate places. [2022-11-18 20:52:01,611 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 961 flow [2022-11-18 20:52:01,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:01,612 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:01,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:52:01,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash -377941150, now seen corresponding path program 1 times [2022-11-18 20:52:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:01,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50503441] [2022-11-18 20:52:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:01,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:01,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50503441] [2022-11-18 20:52:01,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50503441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:01,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:01,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:52:01,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238074321] [2022-11-18 20:52:01,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:01,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:52:01,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:01,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:52:01,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:52:01,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2022-11-18 20:52:01,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:01,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2022-11-18 20:52:01,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:01,899 INFO L130 PetriNetUnfolder]: 47/289 cut-off events. [2022-11-18 20:52:01,899 INFO L131 PetriNetUnfolder]: For 791/871 co-relation queries the response was YES. [2022-11-18 20:52:01,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 289 events. 47/289 cut-off events. For 791/871 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 963 event pairs, 11 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 633. Up to 31 conditions per place. [2022-11-18 20:52:01,902 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-11-18 20:52:01,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 139 transitions, 456 flow [2022-11-18 20:52:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:52:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:52:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 966 transitions. [2022-11-18 20:52:01,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-11-18 20:52:01,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 966 transitions. [2022-11-18 20:52:01,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 966 transitions. [2022-11-18 20:52:01,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:01,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 966 transitions. [2022-11-18 20:52:01,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,912 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,912 INFO L175 Difference]: Start difference. First operand has 201 places, 203 transitions, 961 flow. Second operand 6 states and 966 transitions. [2022-11-18 20:52:01,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 139 transitions, 456 flow [2022-11-18 20:52:01,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 336 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-11-18 20:52:01,917 INFO L231 Difference]: Finished difference. Result has 144 places, 131 transitions, 282 flow [2022-11-18 20:52:01,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2022-11-18 20:52:01,918 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, -28 predicate places. [2022-11-18 20:52:01,918 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 282 flow [2022-11-18 20:52:01,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:01,919 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:01,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:52:01,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash -836619751, now seen corresponding path program 1 times [2022-11-18 20:52:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:01,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989925119] [2022-11-18 20:52:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:01,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:04,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:04,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989925119] [2022-11-18 20:52:04,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989925119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:04,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:04,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:52:04,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085779009] [2022-11-18 20:52:04,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:04,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:52:04,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:52:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:52:04,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-18 20:52:04,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 282 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:04,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:04,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-18 20:52:04,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:07,758 INFO L130 PetriNetUnfolder]: 600/1450 cut-off events. [2022-11-18 20:52:07,758 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2022-11-18 20:52:07,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 1450 events. 600/1450 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8018 event pairs, 109 based on Foata normal form. 0/1409 useless extension candidates. Maximal degree in co-relation 2899. Up to 269 conditions per place. [2022-11-18 20:52:07,766 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 142 selfloop transitions, 42 changer transitions 0/247 dead transitions. [2022-11-18 20:52:07,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 247 transitions, 927 flow [2022-11-18 20:52:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:52:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:52:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2448 transitions. [2022-11-18 20:52:07,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5062034739454094 [2022-11-18 20:52:07,775 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2448 transitions. [2022-11-18 20:52:07,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2448 transitions. [2022-11-18 20:52:07,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:07,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2448 transitions. [2022-11-18 20:52:07,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.15384615384616) internal successors, (2448), 26 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:07,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:07,793 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:07,794 INFO L175 Difference]: Start difference. First operand has 144 places, 131 transitions, 282 flow. Second operand 26 states and 2448 transitions. [2022-11-18 20:52:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 247 transitions, 927 flow [2022-11-18 20:52:07,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 247 transitions, 920 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:52:07,799 INFO L231 Difference]: Finished difference. Result has 174 places, 161 transitions, 514 flow [2022-11-18 20:52:07,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=514, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-11-18 20:52:07,800 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 2 predicate places. [2022-11-18 20:52:07,801 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 514 flow [2022-11-18 20:52:07,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:07,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:07,802 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:07,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:52:07,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:07,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash -769890853, now seen corresponding path program 2 times [2022-11-18 20:52:07,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:07,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102425320] [2022-11-18 20:52:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:07,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:09,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:09,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102425320] [2022-11-18 20:52:09,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102425320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:09,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:09,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:52:09,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928268495] [2022-11-18 20:52:09,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:09,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:52:09,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:52:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:09,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-18 20:52:09,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 514 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:09,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:09,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-18 20:52:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:10,635 INFO L130 PetriNetUnfolder]: 535/1499 cut-off events. [2022-11-18 20:52:10,635 INFO L131 PetriNetUnfolder]: For 1104/1115 co-relation queries the response was YES. [2022-11-18 20:52:10,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 1499 events. 535/1499 cut-off events. For 1104/1115 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9140 event pairs, 160 based on Foata normal form. 4/1466 useless extension candidates. Maximal degree in co-relation 3653. Up to 310 conditions per place. [2022-11-18 20:52:10,645 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 135 selfloop transitions, 51 changer transitions 0/253 dead transitions. [2022-11-18 20:52:10,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 253 transitions, 1255 flow [2022-11-18 20:52:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:52:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 20:52:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1847 transitions. [2022-11-18 20:52:10,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5226372382569326 [2022-11-18 20:52:10,651 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1847 transitions. [2022-11-18 20:52:10,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1847 transitions. [2022-11-18 20:52:10,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:10,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1847 transitions. [2022-11-18 20:52:10,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.21052631578948) internal successors, (1847), 19 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:10,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:10,663 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:10,663 INFO L175 Difference]: Start difference. First operand has 174 places, 161 transitions, 514 flow. Second operand 19 states and 1847 transitions. [2022-11-18 20:52:10,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 253 transitions, 1255 flow [2022-11-18 20:52:10,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 253 transitions, 1239 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:52:10,672 INFO L231 Difference]: Finished difference. Result has 194 places, 184 transitions, 822 flow [2022-11-18 20:52:10,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=822, PETRI_PLACES=194, PETRI_TRANSITIONS=184} [2022-11-18 20:52:10,673 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 22 predicate places. [2022-11-18 20:52:10,674 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 184 transitions, 822 flow [2022-11-18 20:52:10,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:10,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:10,675 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:10,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:52:10,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1806083005, now seen corresponding path program 3 times [2022-11-18 20:52:10,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:10,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510763588] [2022-11-18 20:52:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:10,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:12,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:12,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510763588] [2022-11-18 20:52:12,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510763588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:12,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:12,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:52:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654878542] [2022-11-18 20:52:12,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:12,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:52:12,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:52:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:12,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-18 20:52:12,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 184 transitions, 822 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:12,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:12,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-18 20:52:12,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:13,515 INFO L130 PetriNetUnfolder]: 638/1839 cut-off events. [2022-11-18 20:52:13,515 INFO L131 PetriNetUnfolder]: For 2580/2591 co-relation queries the response was YES. [2022-11-18 20:52:13,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 1839 events. 638/1839 cut-off events. For 2580/2591 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12233 event pairs, 272 based on Foata normal form. 4/1796 useless extension candidates. Maximal degree in co-relation 4997. Up to 532 conditions per place. [2022-11-18 20:52:13,532 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 148 selfloop transitions, 50 changer transitions 0/265 dead transitions. [2022-11-18 20:52:13,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 265 transitions, 1632 flow [2022-11-18 20:52:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:52:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 20:52:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1837 transitions. [2022-11-18 20:52:13,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.519807583474816 [2022-11-18 20:52:13,539 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1837 transitions. [2022-11-18 20:52:13,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1837 transitions. [2022-11-18 20:52:13,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:13,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1837 transitions. [2022-11-18 20:52:13,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:13,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:13,557 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:13,557 INFO L175 Difference]: Start difference. First operand has 194 places, 184 transitions, 822 flow. Second operand 19 states and 1837 transitions. [2022-11-18 20:52:13,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 265 transitions, 1632 flow [2022-11-18 20:52:13,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 265 transitions, 1603 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-18 20:52:13,575 INFO L231 Difference]: Finished difference. Result has 214 places, 203 transitions, 1130 flow [2022-11-18 20:52:13,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1130, PETRI_PLACES=214, PETRI_TRANSITIONS=203} [2022-11-18 20:52:13,579 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 42 predicate places. [2022-11-18 20:52:13,579 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 1130 flow [2022-11-18 20:52:13,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:13,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:13,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:13,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:52:13,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash -318124757, now seen corresponding path program 4 times [2022-11-18 20:52:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:13,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694306340] [2022-11-18 20:52:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:13,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:15,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:15,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694306340] [2022-11-18 20:52:15,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694306340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:15,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:15,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:52:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299969854] [2022-11-18 20:52:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:15,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:52:15,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:52:15,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:15,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-18 20:52:15,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 203 transitions, 1130 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:15,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:15,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-18 20:52:15,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:16,362 INFO L130 PetriNetUnfolder]: 639/1888 cut-off events. [2022-11-18 20:52:16,362 INFO L131 PetriNetUnfolder]: For 3720/3727 co-relation queries the response was YES. [2022-11-18 20:52:16,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5455 conditions, 1888 events. 639/1888 cut-off events. For 3720/3727 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 12634 event pairs, 341 based on Foata normal form. 4/1842 useless extension candidates. Maximal degree in co-relation 5421. Up to 667 conditions per place. [2022-11-18 20:52:16,382 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 140 selfloop transitions, 55 changer transitions 0/262 dead transitions. [2022-11-18 20:52:16,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 262 transitions, 1848 flow [2022-11-18 20:52:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:52:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:52:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1728 transitions. [2022-11-18 20:52:16,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2022-11-18 20:52:16,387 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1728 transitions. [2022-11-18 20:52:16,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1728 transitions. [2022-11-18 20:52:16,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:16,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1728 transitions. [2022-11-18 20:52:16,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 96.0) internal successors, (1728), 18 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:16,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:16,417 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:16,417 INFO L175 Difference]: Start difference. First operand has 214 places, 203 transitions, 1130 flow. Second operand 18 states and 1728 transitions. [2022-11-18 20:52:16,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 262 transitions, 1848 flow [2022-11-18 20:52:16,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 262 transitions, 1811 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:16,440 INFO L231 Difference]: Finished difference. Result has 236 places, 217 transitions, 1415 flow [2022-11-18 20:52:16,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1415, PETRI_PLACES=236, PETRI_TRANSITIONS=217} [2022-11-18 20:52:16,441 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 64 predicate places. [2022-11-18 20:52:16,442 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 217 transitions, 1415 flow [2022-11-18 20:52:16,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:16,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:16,443 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:16,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:52:16,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:16,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash 426904445, now seen corresponding path program 5 times [2022-11-18 20:52:16,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:16,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769566527] [2022-11-18 20:52:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:16,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:18,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:18,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769566527] [2022-11-18 20:52:18,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769566527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:18,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:18,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:52:18,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521915204] [2022-11-18 20:52:18,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:18,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:52:18,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:52:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:52:18,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-18 20:52:18,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 217 transitions, 1415 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:18,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:18,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-18 20:52:18,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:21,874 INFO L130 PetriNetUnfolder]: 1553/4264 cut-off events. [2022-11-18 20:52:21,875 INFO L131 PetriNetUnfolder]: For 12386/12406 co-relation queries the response was YES. [2022-11-18 20:52:21,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13477 conditions, 4264 events. 1553/4264 cut-off events. For 12386/12406 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 35096 event pairs, 423 based on Foata normal form. 16/4157 useless extension candidates. Maximal degree in co-relation 13432. Up to 1076 conditions per place. [2022-11-18 20:52:21,935 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 264 selfloop transitions, 130 changer transitions 0/457 dead transitions. [2022-11-18 20:52:21,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 457 transitions, 4423 flow [2022-11-18 20:52:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:52:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:52:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2450 transitions. [2022-11-18 20:52:21,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5066170388751033 [2022-11-18 20:52:21,940 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2450 transitions. [2022-11-18 20:52:21,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2450 transitions. [2022-11-18 20:52:21,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:21,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2450 transitions. [2022-11-18 20:52:21,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.23076923076923) internal successors, (2450), 26 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:21,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:21,955 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:21,955 INFO L175 Difference]: Start difference. First operand has 236 places, 217 transitions, 1415 flow. Second operand 26 states and 2450 transitions. [2022-11-18 20:52:21,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 457 transitions, 4423 flow [2022-11-18 20:52:22,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 457 transitions, 4318 flow, removed 46 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:22,112 INFO L231 Difference]: Finished difference. Result has 272 places, 317 transitions, 3031 flow [2022-11-18 20:52:22,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3031, PETRI_PLACES=272, PETRI_TRANSITIONS=317} [2022-11-18 20:52:22,114 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 100 predicate places. [2022-11-18 20:52:22,115 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 317 transitions, 3031 flow [2022-11-18 20:52:22,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:22,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:22,116 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:22,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:52:22,117 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:22,118 INFO L85 PathProgramCache]: Analyzing trace with hash 213848133, now seen corresponding path program 6 times [2022-11-18 20:52:22,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:22,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410449086] [2022-11-18 20:52:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:22,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:23,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:23,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410449086] [2022-11-18 20:52:23,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410449086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:23,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:23,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:52:23,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650265820] [2022-11-18 20:52:23,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:23,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:52:23,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:52:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:23,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-18 20:52:23,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 317 transitions, 3031 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:23,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:23,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-18 20:52:23,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:25,631 INFO L130 PetriNetUnfolder]: 1581/5024 cut-off events. [2022-11-18 20:52:25,631 INFO L131 PetriNetUnfolder]: For 22554/22720 co-relation queries the response was YES. [2022-11-18 20:52:25,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17741 conditions, 5024 events. 1581/5024 cut-off events. For 22554/22720 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 45882 event pairs, 441 based on Foata normal form. 92/5002 useless extension candidates. Maximal degree in co-relation 17681. Up to 1055 conditions per place. [2022-11-18 20:52:25,699 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 290 selfloop transitions, 168 changer transitions 0/529 dead transitions. [2022-11-18 20:52:25,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 529 transitions, 6302 flow [2022-11-18 20:52:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:52:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 20:52:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1844 transitions. [2022-11-18 20:52:25,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5217883418222977 [2022-11-18 20:52:25,705 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1844 transitions. [2022-11-18 20:52:25,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1844 transitions. [2022-11-18 20:52:25,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:25,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1844 transitions. [2022-11-18 20:52:25,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.05263157894737) internal successors, (1844), 19 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:25,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:25,717 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:25,717 INFO L175 Difference]: Start difference. First operand has 272 places, 317 transitions, 3031 flow. Second operand 19 states and 1844 transitions. [2022-11-18 20:52:25,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 529 transitions, 6302 flow [2022-11-18 20:52:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 529 transitions, 6218 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-11-18 20:52:25,851 INFO L231 Difference]: Finished difference. Result has 293 places, 392 transitions, 4714 flow [2022-11-18 20:52:25,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4714, PETRI_PLACES=293, PETRI_TRANSITIONS=392} [2022-11-18 20:52:25,853 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 121 predicate places. [2022-11-18 20:52:25,853 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 392 transitions, 4714 flow [2022-11-18 20:52:25,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:25,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:25,854 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:25,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:52:25,854 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:25,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 414212875, now seen corresponding path program 7 times [2022-11-18 20:52:25,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:25,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961386744] [2022-11-18 20:52:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:27,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961386744] [2022-11-18 20:52:27,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961386744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:27,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:27,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:52:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074084263] [2022-11-18 20:52:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:27,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:52:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:52:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:52:27,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-18 20:52:27,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 392 transitions, 4714 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:27,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:27,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-18 20:52:27,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:31,455 INFO L130 PetriNetUnfolder]: 2334/7023 cut-off events. [2022-11-18 20:52:31,455 INFO L131 PetriNetUnfolder]: For 37207/37318 co-relation queries the response was YES. [2022-11-18 20:52:31,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27173 conditions, 7023 events. 2334/7023 cut-off events. For 37207/37318 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 67918 event pairs, 597 based on Foata normal form. 45/6943 useless extension candidates. Maximal degree in co-relation 27103. Up to 2059 conditions per place. [2022-11-18 20:52:31,533 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 314 selfloop transitions, 201 changer transitions 0/578 dead transitions. [2022-11-18 20:52:31,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 578 transitions, 7940 flow [2022-11-18 20:52:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:52:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:52:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2072 transitions. [2022-11-18 20:52:31,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5063538611925709 [2022-11-18 20:52:31,538 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2072 transitions. [2022-11-18 20:52:31,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2072 transitions. [2022-11-18 20:52:31,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:31,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2072 transitions. [2022-11-18 20:52:31,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.18181818181819) internal successors, (2072), 22 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:31,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:31,551 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:31,552 INFO L175 Difference]: Start difference. First operand has 293 places, 392 transitions, 4714 flow. Second operand 22 states and 2072 transitions. [2022-11-18 20:52:31,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 578 transitions, 7940 flow [2022-11-18 20:52:31,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 578 transitions, 7836 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-11-18 20:52:31,824 INFO L231 Difference]: Finished difference. Result has 319 places, 471 transitions, 6641 flow [2022-11-18 20:52:31,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6641, PETRI_PLACES=319, PETRI_TRANSITIONS=471} [2022-11-18 20:52:31,826 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 147 predicate places. [2022-11-18 20:52:31,826 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 471 transitions, 6641 flow [2022-11-18 20:52:31,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:31,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:31,827 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:31,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:52:31,827 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:31,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:31,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1885893633, now seen corresponding path program 8 times [2022-11-18 20:52:31,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:31,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165065897] [2022-11-18 20:52:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:33,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:33,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165065897] [2022-11-18 20:52:33,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165065897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:33,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:33,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:52:33,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385456215] [2022-11-18 20:52:33,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:33,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:52:33,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:52:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:33,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-18 20:52:33,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 471 transitions, 6641 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:33,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:33,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-18 20:52:33,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:36,484 INFO L130 PetriNetUnfolder]: 2307/7839 cut-off events. [2022-11-18 20:52:36,485 INFO L131 PetriNetUnfolder]: For 54434/54750 co-relation queries the response was YES. [2022-11-18 20:52:36,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31433 conditions, 7839 events. 2307/7839 cut-off events. For 54434/54750 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 81066 event pairs, 1112 based on Foata normal form. 225/7891 useless extension candidates. Maximal degree in co-relation 31352. Up to 2368 conditions per place. [2022-11-18 20:52:36,600 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 379 selfloop transitions, 223 changer transitions 0/676 dead transitions. [2022-11-18 20:52:36,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 676 transitions, 10619 flow [2022-11-18 20:52:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:52:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 20:52:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1836 transitions. [2022-11-18 20:52:36,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5195246179966044 [2022-11-18 20:52:36,605 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1836 transitions. [2022-11-18 20:52:36,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1836 transitions. [2022-11-18 20:52:36,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:36,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1836 transitions. [2022-11-18 20:52:36,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.63157894736842) internal successors, (1836), 19 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:36,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:36,615 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:36,615 INFO L175 Difference]: Start difference. First operand has 319 places, 471 transitions, 6641 flow. Second operand 19 states and 1836 transitions. [2022-11-18 20:52:36,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 676 transitions, 10619 flow [2022-11-18 20:52:37,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 676 transitions, 10519 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-11-18 20:52:37,021 INFO L231 Difference]: Finished difference. Result has 339 places, 540 transitions, 8604 flow [2022-11-18 20:52:37,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=6553, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8604, PETRI_PLACES=339, PETRI_TRANSITIONS=540} [2022-11-18 20:52:37,023 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 167 predicate places. [2022-11-18 20:52:37,023 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 540 transitions, 8604 flow [2022-11-18 20:52:37,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:37,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:37,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:37,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:52:37,024 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:37,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash -32776951, now seen corresponding path program 9 times [2022-11-18 20:52:37,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:37,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889937507] [2022-11-18 20:52:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:38,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:38,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889937507] [2022-11-18 20:52:38,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889937507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:38,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:38,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:52:38,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048572293] [2022-11-18 20:52:38,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:38,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:52:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:38,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:52:38,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:52:38,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-18 20:52:38,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 540 transitions, 8604 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:38,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:38,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-18 20:52:38,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:44,734 INFO L130 PetriNetUnfolder]: 3598/11107 cut-off events. [2022-11-18 20:52:44,735 INFO L131 PetriNetUnfolder]: For 81305/81437 co-relation queries the response was YES. [2022-11-18 20:52:44,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47034 conditions, 11107 events. 3598/11107 cut-off events. For 81305/81437 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 119550 event pairs, 897 based on Foata normal form. 64/11004 useless extension candidates. Maximal degree in co-relation 46943. Up to 2710 conditions per place. [2022-11-18 20:52:44,930 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 417 selfloop transitions, 287 changer transitions 0/767 dead transitions. [2022-11-18 20:52:44,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 767 transitions, 13115 flow [2022-11-18 20:52:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:52:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 20:52:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2360 transitions. [2022-11-18 20:52:44,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5075268817204301 [2022-11-18 20:52:44,935 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2360 transitions. [2022-11-18 20:52:44,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2360 transitions. [2022-11-18 20:52:44,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:44,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2360 transitions. [2022-11-18 20:52:44,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 94.4) internal successors, (2360), 25 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:44,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:44,948 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:44,948 INFO L175 Difference]: Start difference. First operand has 339 places, 540 transitions, 8604 flow. Second operand 25 states and 2360 transitions. [2022-11-18 20:52:44,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 767 transitions, 13115 flow [2022-11-18 20:52:45,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 767 transitions, 12925 flow, removed 87 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:45,751 INFO L231 Difference]: Finished difference. Result has 374 places, 633 transitions, 11333 flow [2022-11-18 20:52:45,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=8486, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11333, PETRI_PLACES=374, PETRI_TRANSITIONS=633} [2022-11-18 20:52:45,753 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 202 predicate places. [2022-11-18 20:52:45,753 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 633 transitions, 11333 flow [2022-11-18 20:52:45,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:45,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:45,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:52:45,755 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash 848283153, now seen corresponding path program 10 times [2022-11-18 20:52:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:45,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9348937] [2022-11-18 20:52:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:47,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:47,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9348937] [2022-11-18 20:52:47,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9348937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:47,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:47,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:52:47,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015076152] [2022-11-18 20:52:47,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:47,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:52:47,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:52:47,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:52:47,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-18 20:52:47,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 633 transitions, 11333 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:47,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:47,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-18 20:52:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:54,646 INFO L130 PetriNetUnfolder]: 4082/12635 cut-off events. [2022-11-18 20:52:54,646 INFO L131 PetriNetUnfolder]: For 116506/116656 co-relation queries the response was YES. [2022-11-18 20:52:54,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56996 conditions, 12635 events. 4082/12635 cut-off events. For 116506/116656 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 139122 event pairs, 577 based on Foata normal form. 66/12552 useless extension candidates. Maximal degree in co-relation 56889. Up to 2695 conditions per place. [2022-11-18 20:52:54,943 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 418 selfloop transitions, 395 changer transitions 0/876 dead transitions. [2022-11-18 20:52:54,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 876 transitions, 16216 flow [2022-11-18 20:52:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:52:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 20:52:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2646 transitions. [2022-11-18 20:52:54,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5080645161290323 [2022-11-18 20:52:54,948 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2646 transitions. [2022-11-18 20:52:54,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2646 transitions. [2022-11-18 20:52:54,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:54,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2646 transitions. [2022-11-18 20:52:54,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 94.5) internal successors, (2646), 28 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:54,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:54,961 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:54,961 INFO L175 Difference]: Start difference. First operand has 374 places, 633 transitions, 11333 flow. Second operand 28 states and 2646 transitions. [2022-11-18 20:52:54,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 876 transitions, 16216 flow [2022-11-18 20:52:55,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 876 transitions, 16030 flow, removed 84 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:55,895 INFO L231 Difference]: Finished difference. Result has 409 places, 722 transitions, 14397 flow [2022-11-18 20:52:55,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=11165, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14397, PETRI_PLACES=409, PETRI_TRANSITIONS=722} [2022-11-18 20:52:55,896 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 237 predicate places. [2022-11-18 20:52:55,896 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 722 transitions, 14397 flow [2022-11-18 20:52:55,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:55,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:55,897 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:55,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:52:55,897 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:52:55,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:55,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1481233283, now seen corresponding path program 11 times [2022-11-18 20:52:55,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:55,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921557877] [2022-11-18 20:52:55,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:55,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:57,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:57,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921557877] [2022-11-18 20:52:57,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921557877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:57,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:57,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:52:57,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439322772] [2022-11-18 20:52:57,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:57,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:52:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:52:57,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:52:57,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-18 20:52:57,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 722 transitions, 14397 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:57,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:57,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-18 20:52:57,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:05,043 INFO L130 PetriNetUnfolder]: 4085/13060 cut-off events. [2022-11-18 20:53:05,043 INFO L131 PetriNetUnfolder]: For 153742/153742 co-relation queries the response was YES. [2022-11-18 20:53:05,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61849 conditions, 13060 events. 4085/13060 cut-off events. For 153742/153742 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 144863 event pairs, 2257 based on Foata normal form. 3/12764 useless extension candidates. Maximal degree in co-relation 61729. Up to 5715 conditions per place. [2022-11-18 20:53:05,343 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 516 selfloop transitions, 321 changer transitions 0/900 dead transitions. [2022-11-18 20:53:05,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 900 transitions, 18989 flow [2022-11-18 20:53:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:53:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:53:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1893 transitions. [2022-11-18 20:53:05,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5088709677419355 [2022-11-18 20:53:05,347 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1893 transitions. [2022-11-18 20:53:05,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1893 transitions. [2022-11-18 20:53:05,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:05,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1893 transitions. [2022-11-18 20:53:05,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.65) internal successors, (1893), 20 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:05,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:05,356 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:05,356 INFO L175 Difference]: Start difference. First operand has 409 places, 722 transitions, 14397 flow. Second operand 20 states and 1893 transitions. [2022-11-18 20:53:05,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 900 transitions, 18989 flow [2022-11-18 20:53:06,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 900 transitions, 18628 flow, removed 137 selfloop flow, removed 7 redundant places. [2022-11-18 20:53:07,018 INFO L231 Difference]: Finished difference. Result has 432 places, 773 transitions, 16166 flow [2022-11-18 20:53:07,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=14097, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=16166, PETRI_PLACES=432, PETRI_TRANSITIONS=773} [2022-11-18 20:53:07,019 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 260 predicate places. [2022-11-18 20:53:07,019 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 773 transitions, 16166 flow [2022-11-18 20:53:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:07,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:07,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:07,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:53:07,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:53:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1633854285, now seen corresponding path program 12 times [2022-11-18 20:53:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:07,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154639397] [2022-11-18 20:53:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:07,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:08,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:08,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154639397] [2022-11-18 20:53:08,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154639397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:08,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:08,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:53:08,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057819144] [2022-11-18 20:53:08,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:08,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:53:08,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:53:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:53:08,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-18 20:53:08,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 773 transitions, 16166 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:08,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:08,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-18 20:53:08,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:17,092 INFO L130 PetriNetUnfolder]: 4482/14317 cut-off events. [2022-11-18 20:53:17,092 INFO L131 PetriNetUnfolder]: For 182204/182254 co-relation queries the response was YES. [2022-11-18 20:53:17,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69513 conditions, 14317 events. 4482/14317 cut-off events. For 182204/182254 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 162981 event pairs, 2014 based on Foata normal form. 35/14089 useless extension candidates. Maximal degree in co-relation 69382. Up to 4882 conditions per place. [2022-11-18 20:53:17,435 INFO L137 encePairwiseOnDemand]: 160/186 looper letters, 595 selfloop transitions, 320 changer transitions 0/978 dead transitions. [2022-11-18 20:53:17,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 978 transitions, 21404 flow [2022-11-18 20:53:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:53:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 20:53:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1815 transitions. [2022-11-18 20:53:17,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5135823429541596 [2022-11-18 20:53:17,439 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1815 transitions. [2022-11-18 20:53:17,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1815 transitions. [2022-11-18 20:53:17,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:17,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1815 transitions. [2022-11-18 20:53:17,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.52631578947368) internal successors, (1815), 19 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:17,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:17,447 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:17,447 INFO L175 Difference]: Start difference. First operand has 432 places, 773 transitions, 16166 flow. Second operand 19 states and 1815 transitions. [2022-11-18 20:53:17,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 978 transitions, 21404 flow [2022-11-18 20:53:19,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 978 transitions, 21135 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-11-18 20:53:19,151 INFO L231 Difference]: Finished difference. Result has 455 places, 841 transitions, 18750 flow [2022-11-18 20:53:19,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=15954, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=18750, PETRI_PLACES=455, PETRI_TRANSITIONS=841} [2022-11-18 20:53:19,152 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 283 predicate places. [2022-11-18 20:53:19,152 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 841 transitions, 18750 flow [2022-11-18 20:53:19,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:19,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:19,152 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:53:19,152 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:53:19,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash 770623071, now seen corresponding path program 13 times [2022-11-18 20:53:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:19,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921518033] [2022-11-18 20:53:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:21,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:21,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921518033] [2022-11-18 20:53:21,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921518033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:21,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:21,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835493737] [2022-11-18 20:53:21,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:21,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:21,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2022-11-18 20:53:21,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 841 transitions, 18750 flow. Second operand has 21 states, 21 states have (on average 88.95238095238095) internal successors, (1868), 21 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:21,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:21,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2022-11-18 20:53:21,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:31,483 INFO L130 PetriNetUnfolder]: 4488/14596 cut-off events. [2022-11-18 20:53:31,483 INFO L131 PetriNetUnfolder]: For 198934/199019 co-relation queries the response was YES. [2022-11-18 20:53:31,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72464 conditions, 14596 events. 4488/14596 cut-off events. For 198934/199019 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 169524 event pairs, 767 based on Foata normal form. 47/14307 useless extension candidates. Maximal degree in co-relation 72324. Up to 3428 conditions per place. [2022-11-18 20:53:31,803 INFO L137 encePairwiseOnDemand]: 158/186 looper letters, 557 selfloop transitions, 485 changer transitions 0/1104 dead transitions. [2022-11-18 20:53:31,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1104 transitions, 25557 flow [2022-11-18 20:53:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:53:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:53:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2940 transitions. [2022-11-18 20:53:31,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4939516129032258 [2022-11-18 20:53:31,810 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2940 transitions. [2022-11-18 20:53:31,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2940 transitions. [2022-11-18 20:53:31,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:31,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2940 transitions. [2022-11-18 20:53:31,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 91.875) internal successors, (2940), 32 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:31,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 186.0) internal successors, (6138), 33 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:31,822 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 186.0) internal successors, (6138), 33 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:31,822 INFO L175 Difference]: Start difference. First operand has 455 places, 841 transitions, 18750 flow. Second operand 32 states and 2940 transitions. [2022-11-18 20:53:31,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 1104 transitions, 25557 flow [2022-11-18 20:53:33,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1104 transitions, 25209 flow, removed 161 selfloop flow, removed 5 redundant places. [2022-11-18 20:53:33,779 INFO L231 Difference]: Finished difference. Result has 493 places, 919 transitions, 22005 flow [2022-11-18 20:53:33,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=18442, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=22005, PETRI_PLACES=493, PETRI_TRANSITIONS=919} [2022-11-18 20:53:33,781 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 321 predicate places. [2022-11-18 20:53:33,781 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 919 transitions, 22005 flow [2022-11-18 20:53:33,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 88.95238095238095) internal successors, (1868), 21 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:33,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:33,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:53:33,783 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:53:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1564014429, now seen corresponding path program 14 times [2022-11-18 20:53:33,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:33,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318492476] [2022-11-18 20:53:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:35,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318492476] [2022-11-18 20:53:35,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318492476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:35,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:35,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067161322] [2022-11-18 20:53:35,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:35,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:35,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-18 20:53:35,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 919 transitions, 22005 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:35,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:35,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-18 20:53:35,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:45,705 INFO L130 PetriNetUnfolder]: 4878/16039 cut-off events. [2022-11-18 20:53:45,705 INFO L131 PetriNetUnfolder]: For 236839/237001 co-relation queries the response was YES. [2022-11-18 20:53:46,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82920 conditions, 16039 events. 4878/16039 cut-off events. For 236839/237001 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 189828 event pairs, 1548 based on Foata normal form. 81/15850 useless extension candidates. Maximal degree in co-relation 82767. Up to 4713 conditions per place. [2022-11-18 20:53:46,156 INFO L137 encePairwiseOnDemand]: 158/186 looper letters, 643 selfloop transitions, 464 changer transitions 0/1170 dead transitions. [2022-11-18 20:53:46,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 1170 transitions, 28526 flow [2022-11-18 20:53:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:53:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:53:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2464 transitions. [2022-11-18 20:53:46,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5095119933829612 [2022-11-18 20:53:46,161 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2464 transitions. [2022-11-18 20:53:46,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2464 transitions. [2022-11-18 20:53:46,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:46,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2464 transitions.