./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:44:32,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:44:32,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:44:32,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:44:32,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:44:32,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:44:32,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:44:32,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:44:32,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:44:32,292 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:44:32,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:44:32,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:44:32,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:44:32,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:44:32,294 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:44:32,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:44:32,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:44:32,295 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:44:32,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:44:32,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:44:32,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:44:32,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:44:32,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:44:32,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:44:32,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:44:32,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:44:32,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:44:32,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:44:32,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:44:32,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:44:32,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:44:32,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:44:32,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:44:32,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:44:32,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:44:32,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:44:32,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:44:32,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:44:32,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:44:32,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:44:32,302 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:44:32,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:44:32,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:44:32,303 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:44:32,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:44:32,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:44:32,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:44:32,602 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:44:32,604 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:44:32,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_tso.yml/witness.yml [2024-06-28 01:44:32,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:44:32,716 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:44:32,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-28 01:44:33,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:44:34,053 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:44:34,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-28 01:44:34,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a92f9da/3f77b09eedc94e39a6b5757103281a82/FLAGdcd924074 [2024-06-28 01:44:34,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a92f9da/3f77b09eedc94e39a6b5757103281a82 [2024-06-28 01:44:34,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:44:34,088 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:44:34,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:44:34,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:44:34,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:44:34,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:44:32" (1/2) ... [2024-06-28 01:44:34,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6711b8ea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:44:34, skipping insertion in model container [2024-06-28 01:44:34,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:44:32" (1/2) ... [2024-06-28 01:44:34,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@699ed02d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:44:34, skipping insertion in model container [2024-06-28 01:44:34,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:44:34" (2/2) ... [2024-06-28 01:44:34,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6711b8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34, skipping insertion in model container [2024-06-28 01:44:34,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:44:34" (2/2) ... [2024-06-28 01:44:34,098 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:44:34,147 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:44:34,148 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:44:34,148 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:44:34,148 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:44:34,149 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-28 01:44:34,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:44:34,337 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_tso.i[944,957] [2024-06-28 01:44:34,518 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:44:34,526 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:44:34,557 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:44:34,614 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:44:34,639 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:44:34,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34 WrapperNode [2024-06-28 01:44:34,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:44:34,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:44:34,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:44:34,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:44:34,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,687 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-06-28 01:44:34,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:44:34,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:44:34,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:44:34,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:44:34,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,730 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:44:34,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:44:34,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:44:34,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:44:34,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:44:34,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (1/1) ... [2024-06-28 01:44:34,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:44:34,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:44:34,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:44:34,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:44:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:44:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:44:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:44:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:44:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:44:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:44:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:44:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:44:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:44:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:44:34,874 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:44:35,003 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:44:35,005 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:44:35,318 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:44:35,318 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:44:35,463 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:44:35,464 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:44:35,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:44:35 BoogieIcfgContainer [2024-06-28 01:44:35,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:44:35,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:44:35,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:44:35,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:44:35,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:44:32" (1/4) ... [2024-06-28 01:44:35,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c07b518 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:44:35, skipping insertion in model container [2024-06-28 01:44:35,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:44:34" (2/4) ... [2024-06-28 01:44:35,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c07b518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:44:35, skipping insertion in model container [2024-06-28 01:44:35,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:34" (3/4) ... [2024-06-28 01:44:35,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c07b518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:44:35, skipping insertion in model container [2024-06-28 01:44:35,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:44:35" (4/4) ... [2024-06-28 01:44:35,477 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_tso.i [2024-06-28 01:44:35,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:44:35,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:44:35,490 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:44:35,527 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:44:35,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:44:35,584 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-28 01:44:35,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:44:35,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-28 01:44:35,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:44:35,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-28 01:44:35,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:44:35,609 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@694a8659, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:44:35,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:44:35,612 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:44:35,613 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:44:35,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:44:35,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:35,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:44:35,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:35,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash 346938358, now seen corresponding path program 1 times [2024-06-28 01:44:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:35,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119861303] [2024-06-28 01:44:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:35,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:36,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119861303] [2024-06-28 01:44:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119861303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:36,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:36,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:44:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756658363] [2024-06-28 01:44:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:36,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:44:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:36,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:44:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:44:36,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:44:36,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:36,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:44:36,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:36,643 INFO L124 PetriNetUnfolderBase]: 543/952 cut-off events. [2024-06-28 01:44:36,643 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:44:36,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 952 events. 543/952 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4754 event pairs, 234 based on Foata normal form. 43/933 useless extension candidates. Maximal degree in co-relation 1861. Up to 892 conditions per place. [2024-06-28 01:44:36,650 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 32 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 01:44:36,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 171 flow [2024-06-28 01:44:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:44:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:44:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-28 01:44:36,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-06-28 01:44:36,660 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 73 transitions. [2024-06-28 01:44:36,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 171 flow [2024-06-28 01:44:36,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:36,664 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-28 01:44:36,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-28 01:44:36,668 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:44:36,668 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-28 01:44:36,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:36,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:36,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:44:36,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:36,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1599562897, now seen corresponding path program 1 times [2024-06-28 01:44:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:36,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250559168] [2024-06-28 01:44:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:36,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250559168] [2024-06-28 01:44:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250559168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:36,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:44:36,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814674522] [2024-06-28 01:44:36,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:36,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:44:36,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:36,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:44:36,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:44:37,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:44:37,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:37,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:44:37,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,184 INFO L124 PetriNetUnfolderBase]: 621/1034 cut-off events. [2024-06-28 01:44:37,185 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-28 01:44:37,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1034 events. 621/1034 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4958 event pairs, 212 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 2299. Up to 997 conditions per place. [2024-06-28 01:44:37,192 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 42 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 01:44:37,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 246 flow [2024-06-28 01:44:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:44:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:44:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-28 01:44:37,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-06-28 01:44:37,196 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 4 states and 91 transitions. [2024-06-28 01:44:37,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 246 flow [2024-06-28 01:44:37,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:37,199 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 132 flow [2024-06-28 01:44:37,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-28 01:44:37,200 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-06-28 01:44:37,200 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 132 flow [2024-06-28 01:44:37,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:37,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:44:37,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:37,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:37,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1953158983, now seen corresponding path program 1 times [2024-06-28 01:44:37,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:37,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445206701] [2024-06-28 01:44:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:37,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:37,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:37,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445206701] [2024-06-28 01:44:37,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445206701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:37,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:37,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:44:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092793859] [2024-06-28 01:44:37,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:37,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:44:37,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:44:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:44:37,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:44:37,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:37,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:44:37,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,853 INFO L124 PetriNetUnfolderBase]: 613/1163 cut-off events. [2024-06-28 01:44:37,853 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-06-28 01:44:37,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1163 events. 613/1163 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6339 event pairs, 197 based on Foata normal form. 4/1073 useless extension candidates. Maximal degree in co-relation 2618. Up to 968 conditions per place. [2024-06-28 01:44:37,858 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 49 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-28 01:44:37,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 358 flow [2024-06-28 01:44:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-28 01:44:37,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 01:44:37,860 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 132 flow. Second operand 5 states and 108 transitions. [2024-06-28 01:44:37,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 358 flow [2024-06-28 01:44:37,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 332 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:37,863 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 229 flow [2024-06-28 01:44:37,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-06-28 01:44:37,863 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-28 01:44:37,863 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 229 flow [2024-06-28 01:44:37,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:37,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:37,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:44:37,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:37,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1949687049, now seen corresponding path program 1 times [2024-06-28 01:44:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:37,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746390343] [2024-06-28 01:44:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:37,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746390343] [2024-06-28 01:44:37,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746390343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:37,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:37,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:44:37,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777356059] [2024-06-28 01:44:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:37,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:44:37,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:44:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:44:37,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 36 [2024-06-28 01:44:37,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:37,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 36 [2024-06-28 01:44:37,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,998 INFO L124 PetriNetUnfolderBase]: 236/604 cut-off events. [2024-06-28 01:44:37,999 INFO L125 PetriNetUnfolderBase]: For 268/294 co-relation queries the response was YES. [2024-06-28 01:44:38,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1282 conditions, 604 events. 236/604 cut-off events. For 268/294 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3681 event pairs, 110 based on Foata normal form. 10/575 useless extension candidates. Maximal degree in co-relation 1265. Up to 381 conditions per place. [2024-06-28 01:44:38,002 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 26 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-28 01:44:38,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 270 flow [2024-06-28 01:44:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:44:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:44:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 01:44:38,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7129629629629629 [2024-06-28 01:44:38,003 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 229 flow. Second operand 3 states and 77 transitions. [2024-06-28 01:44:38,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 270 flow [2024-06-28 01:44:38,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 266 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:44:38,005 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 196 flow [2024-06-28 01:44:38,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-06-28 01:44:38,006 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-06-28 01:44:38,006 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 196 flow [2024-06-28 01:44:38,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:38,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:38,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:38,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:44:38,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash 200585610, now seen corresponding path program 1 times [2024-06-28 01:44:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396930348] [2024-06-28 01:44:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:38,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:38,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396930348] [2024-06-28 01:44:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396930348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:38,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:38,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558993649] [2024-06-28 01:44:38,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:38,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:38,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:44:38,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:38,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:38,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:44:38,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:38,991 INFO L124 PetriNetUnfolderBase]: 531/1011 cut-off events. [2024-06-28 01:44:38,992 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-06-28 01:44:38,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 1011 events. 531/1011 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5174 event pairs, 180 based on Foata normal form. 4/972 useless extension candidates. Maximal degree in co-relation 2431. Up to 808 conditions per place. [2024-06-28 01:44:38,996 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 48 selfloop transitions, 12 changer transitions 1/69 dead transitions. [2024-06-28 01:44:38,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 376 flow [2024-06-28 01:44:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 01:44:38,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-28 01:44:38,998 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 196 flow. Second operand 6 states and 119 transitions. [2024-06-28 01:44:38,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 376 flow [2024-06-28 01:44:38,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:39,000 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 217 flow [2024-06-28 01:44:39,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 01:44:39,001 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-06-28 01:44:39,001 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 217 flow [2024-06-28 01:44:39,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:39,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:39,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:44:39,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:39,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:39,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1043195360, now seen corresponding path program 1 times [2024-06-28 01:44:39,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:39,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167067248] [2024-06-28 01:44:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:39,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:39,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167067248] [2024-06-28 01:44:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167067248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:39,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:39,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:39,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048288789] [2024-06-28 01:44:39,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:39,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:44:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:39,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:44:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:44:39,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:39,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:39,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:39,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:39,580 INFO L124 PetriNetUnfolderBase]: 452/894 cut-off events. [2024-06-28 01:44:39,580 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2024-06-28 01:44:39,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 894 events. 452/894 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4626 event pairs, 185 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 2242. Up to 738 conditions per place. [2024-06-28 01:44:39,584 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 48 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-06-28 01:44:39,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 386 flow [2024-06-28 01:44:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-28 01:44:39,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 01:44:39,586 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 217 flow. Second operand 5 states and 86 transitions. [2024-06-28 01:44:39,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 386 flow [2024-06-28 01:44:39,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 353 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:39,588 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 246 flow [2024-06-28 01:44:39,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-28 01:44:39,589 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-06-28 01:44:39,589 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 246 flow [2024-06-28 01:44:39,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:39,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:39,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:44:39,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:39,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:39,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2020681263, now seen corresponding path program 1 times [2024-06-28 01:44:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:39,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130532975] [2024-06-28 01:44:39,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:39,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:40,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130532975] [2024-06-28 01:44:40,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130532975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:40,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319065823] [2024-06-28 01:44:40,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:40,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:40,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:40,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:40,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:40,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:40,443 INFO L124 PetriNetUnfolderBase]: 458/908 cut-off events. [2024-06-28 01:44:40,444 INFO L125 PetriNetUnfolderBase]: For 942/942 co-relation queries the response was YES. [2024-06-28 01:44:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 908 events. 458/908 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4744 event pairs, 177 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 2380. Up to 724 conditions per place. [2024-06-28 01:44:40,448 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 54 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-28 01:44:40,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 434 flow [2024-06-28 01:44:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 01:44:40,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:44:40,450 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 246 flow. Second operand 6 states and 104 transitions. [2024-06-28 01:44:40,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 434 flow [2024-06-28 01:44:40,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 425 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:40,452 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 283 flow [2024-06-28 01:44:40,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 01:44:40,453 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-06-28 01:44:40,453 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 283 flow [2024-06-28 01:44:40,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:40,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:40,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:44:40,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:40,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1475534119, now seen corresponding path program 1 times [2024-06-28 01:44:40,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:40,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107033738] [2024-06-28 01:44:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:40,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:40,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107033738] [2024-06-28 01:44:40,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107033738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227002856] [2024-06-28 01:44:40,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:40,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:40,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:40,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:40,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:41,171 INFO L124 PetriNetUnfolderBase]: 556/1065 cut-off events. [2024-06-28 01:44:41,171 INFO L125 PetriNetUnfolderBase]: For 1484/1484 co-relation queries the response was YES. [2024-06-28 01:44:41,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 1065 events. 556/1065 cut-off events. For 1484/1484 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5529 event pairs, 220 based on Foata normal form. 1/1018 useless extension candidates. Maximal degree in co-relation 2990. Up to 890 conditions per place. [2024-06-28 01:44:41,176 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 60 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-28 01:44:41,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 498 flow [2024-06-28 01:44:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-28 01:44:41,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:44:41,178 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 283 flow. Second operand 6 states and 99 transitions. [2024-06-28 01:44:41,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 498 flow [2024-06-28 01:44:41,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 474 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:41,182 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 325 flow [2024-06-28 01:44:41,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-28 01:44:41,184 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2024-06-28 01:44:41,184 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 325 flow [2024-06-28 01:44:41,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:41,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:41,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:44:41,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:41,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1783382335, now seen corresponding path program 2 times [2024-06-28 01:44:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:41,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393294570] [2024-06-28 01:44:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:41,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:41,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:41,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393294570] [2024-06-28 01:44:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393294570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:41,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:41,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228432589] [2024-06-28 01:44:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:41,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:41,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:41,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:41,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:41,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:41,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:41,879 INFO L124 PetriNetUnfolderBase]: 559/1063 cut-off events. [2024-06-28 01:44:41,879 INFO L125 PetriNetUnfolderBase]: For 1938/1950 co-relation queries the response was YES. [2024-06-28 01:44:41,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 1063 events. 559/1063 cut-off events. For 1938/1950 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5518 event pairs, 210 based on Foata normal form. 9/1026 useless extension candidates. Maximal degree in co-relation 3129. Up to 872 conditions per place. [2024-06-28 01:44:41,885 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 59 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-06-28 01:44:41,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 539 flow [2024-06-28 01:44:41,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 01:44:41,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:44:41,887 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 325 flow. Second operand 6 states and 100 transitions. [2024-06-28 01:44:41,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 539 flow [2024-06-28 01:44:41,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 520 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:41,890 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 353 flow [2024-06-28 01:44:41,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-28 01:44:41,891 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-28 01:44:41,891 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 353 flow [2024-06-28 01:44:41,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:41,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:41,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:44:41,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:41,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:41,892 INFO L85 PathProgramCache]: Analyzing trace with hash 681282037, now seen corresponding path program 1 times [2024-06-28 01:44:41,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:41,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110697086] [2024-06-28 01:44:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:41,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110697086] [2024-06-28 01:44:42,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110697086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:42,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:42,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:42,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458126951] [2024-06-28 01:44:42,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:42,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:42,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:42,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:42,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:42,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:42,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:42,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:42,664 INFO L124 PetriNetUnfolderBase]: 623/1177 cut-off events. [2024-06-28 01:44:42,665 INFO L125 PetriNetUnfolderBase]: For 2534/2534 co-relation queries the response was YES. [2024-06-28 01:44:42,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3687 conditions, 1177 events. 623/1177 cut-off events. For 2534/2534 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6091 event pairs, 174 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 3658. Up to 914 conditions per place. [2024-06-28 01:44:42,671 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 69 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-28 01:44:42,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 739 flow [2024-06-28 01:44:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:44:42,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-28 01:44:42,673 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 353 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:44:42,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 739 flow [2024-06-28 01:44:42,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 105 transitions, 702 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:42,677 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 538 flow [2024-06-28 01:44:42,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=538, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-06-28 01:44:42,678 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-06-28 01:44:42,678 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 538 flow [2024-06-28 01:44:42,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:42,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:42,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:42,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:44:42,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:42,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash -727896715, now seen corresponding path program 2 times [2024-06-28 01:44:42,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:42,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691491240] [2024-06-28 01:44:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:42,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:43,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:43,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691491240] [2024-06-28 01:44:43,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691491240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:43,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:43,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:43,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164880434] [2024-06-28 01:44:43,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:43,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:43,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:43,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:43,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:43,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:43,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 538 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:43,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:43,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:43,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:43,584 INFO L124 PetriNetUnfolderBase]: 645/1210 cut-off events. [2024-06-28 01:44:43,584 INFO L125 PetriNetUnfolderBase]: For 3565/3565 co-relation queries the response was YES. [2024-06-28 01:44:43,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4274 conditions, 1210 events. 645/1210 cut-off events. For 3565/3565 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6267 event pairs, 170 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 4241. Up to 924 conditions per place. [2024-06-28 01:44:43,591 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 66 selfloop transitions, 38 changer transitions 0/110 dead transitions. [2024-06-28 01:44:43,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 898 flow [2024-06-28 01:44:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 01:44:43,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-28 01:44:43,593 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 538 flow. Second operand 7 states and 121 transitions. [2024-06-28 01:44:43,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 898 flow [2024-06-28 01:44:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 849 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:43,599 INFO L231 Difference]: Finished difference. Result has 76 places, 85 transitions, 661 flow [2024-06-28 01:44:43,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=661, PETRI_PLACES=76, PETRI_TRANSITIONS=85} [2024-06-28 01:44:43,600 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-06-28 01:44:43,600 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 85 transitions, 661 flow [2024-06-28 01:44:43,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:43,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:43,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:44:43,601 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:43,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash -727775815, now seen corresponding path program 3 times [2024-06-28 01:44:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:43,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196008229] [2024-06-28 01:44:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:44,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:44,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196008229] [2024-06-28 01:44:44,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196008229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:44,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:44,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616212056] [2024-06-28 01:44:44,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:44,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:44,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:44,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:44,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:44,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 85 transitions, 661 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:44,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:44,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:44,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:44,378 INFO L124 PetriNetUnfolderBase]: 681/1252 cut-off events. [2024-06-28 01:44:44,378 INFO L125 PetriNetUnfolderBase]: For 5123/5123 co-relation queries the response was YES. [2024-06-28 01:44:44,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 1252 events. 681/1252 cut-off events. For 5123/5123 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6381 event pairs, 173 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 4885. Up to 927 conditions per place. [2024-06-28 01:44:44,386 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 73 selfloop transitions, 39 changer transitions 0/118 dead transitions. [2024-06-28 01:44:44,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 1083 flow [2024-06-28 01:44:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 01:44:44,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-28 01:44:44,388 INFO L175 Difference]: Start difference. First operand has 76 places, 85 transitions, 661 flow. Second operand 7 states and 121 transitions. [2024-06-28 01:44:44,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 1083 flow [2024-06-28 01:44:44,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 118 transitions, 995 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:44,395 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 785 flow [2024-06-28 01:44:44,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=785, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2024-06-28 01:44:44,396 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-06-28 01:44:44,396 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 785 flow [2024-06-28 01:44:44,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:44,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:44,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:44,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:44:44,397 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:44,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash -673068166, now seen corresponding path program 1 times [2024-06-28 01:44:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:44,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490966529] [2024-06-28 01:44:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:45,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490966529] [2024-06-28 01:44:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490966529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:45,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:45,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:45,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172179967] [2024-06-28 01:44:45,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:45,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:45,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:45,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:45,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:45,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:45,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 785 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:45,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:45,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:45,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:45,405 INFO L124 PetriNetUnfolderBase]: 694/1266 cut-off events. [2024-06-28 01:44:45,405 INFO L125 PetriNetUnfolderBase]: For 5289/5289 co-relation queries the response was YES. [2024-06-28 01:44:45,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 1266 events. 694/1266 cut-off events. For 5289/5289 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6425 event pairs, 170 based on Foata normal form. 1/1224 useless extension candidates. Maximal degree in co-relation 4955. Up to 1080 conditions per place. [2024-06-28 01:44:45,416 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 98 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-28 01:44:45,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 121 transitions, 1132 flow [2024-06-28 01:44:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 01:44:45,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-28 01:44:45,417 INFO L175 Difference]: Start difference. First operand has 81 places, 94 transitions, 785 flow. Second operand 7 states and 115 transitions. [2024-06-28 01:44:45,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 121 transitions, 1132 flow [2024-06-28 01:44:45,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 1056 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:45,427 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 782 flow [2024-06-28 01:44:45,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=782, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2024-06-28 01:44:45,428 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2024-06-28 01:44:45,428 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 782 flow [2024-06-28 01:44:45,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:45,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:45,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:45,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:44:45,429 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:45,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1193641792, now seen corresponding path program 2 times [2024-06-28 01:44:45,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:45,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618077101] [2024-06-28 01:44:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:45,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:46,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:46,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618077101] [2024-06-28 01:44:46,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618077101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:46,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:46,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986616353] [2024-06-28 01:44:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:46,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:46,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:46,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:46,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:46,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:46,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:46,570 INFO L124 PetriNetUnfolderBase]: 712/1295 cut-off events. [2024-06-28 01:44:46,570 INFO L125 PetriNetUnfolderBase]: For 5737/5752 co-relation queries the response was YES. [2024-06-28 01:44:46,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 1295 events. 712/1295 cut-off events. For 5737/5752 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6601 event pairs, 159 based on Foata normal form. 11/1261 useless extension candidates. Maximal degree in co-relation 5154. Up to 1048 conditions per place. [2024-06-28 01:44:46,583 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 98 selfloop transitions, 27 changer transitions 0/131 dead transitions. [2024-06-28 01:44:46,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1227 flow [2024-06-28 01:44:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 01:44:46,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-28 01:44:46,585 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 782 flow. Second operand 7 states and 118 transitions. [2024-06-28 01:44:46,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1227 flow [2024-06-28 01:44:46,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 1182 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:46,593 INFO L231 Difference]: Finished difference. Result has 87 places, 105 transitions, 885 flow [2024-06-28 01:44:46,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=885, PETRI_PLACES=87, PETRI_TRANSITIONS=105} [2024-06-28 01:44:46,594 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-06-28 01:44:46,594 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 105 transitions, 885 flow [2024-06-28 01:44:46,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:46,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:46,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:46,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:44:46,595 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:46,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1498411379, now seen corresponding path program 4 times [2024-06-28 01:44:46,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:46,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486274395] [2024-06-28 01:44:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:46,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:47,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486274395] [2024-06-28 01:44:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486274395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:47,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:47,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677844276] [2024-06-28 01:44:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:47,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:47,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:47,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:47,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:47,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:47,406 INFO L124 PetriNetUnfolderBase]: 708/1292 cut-off events. [2024-06-28 01:44:47,407 INFO L125 PetriNetUnfolderBase]: For 6708/6714 co-relation queries the response was YES. [2024-06-28 01:44:47,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5445 conditions, 1292 events. 708/1292 cut-off events. For 6708/6714 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6594 event pairs, 163 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 5405. Up to 931 conditions per place. [2024-06-28 01:44:47,414 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 87 selfloop transitions, 48 changer transitions 0/141 dead transitions. [2024-06-28 01:44:47,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 141 transitions, 1409 flow [2024-06-28 01:44:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 01:44:47,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:44:47,416 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 885 flow. Second operand 7 states and 120 transitions. [2024-06-28 01:44:47,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 141 transitions, 1409 flow [2024-06-28 01:44:47,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 141 transitions, 1360 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:47,427 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 1135 flow [2024-06-28 01:44:47,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1135, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2024-06-28 01:44:47,428 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2024-06-28 01:44:47,428 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 1135 flow [2024-06-28 01:44:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:47,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:44:47,429 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:47,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash -549721518, now seen corresponding path program 3 times [2024-06-28 01:44:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349299786] [2024-06-28 01:44:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:47,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349299786] [2024-06-28 01:44:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349299786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:47,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:47,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:47,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515050901] [2024-06-28 01:44:47,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:47,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:47,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:48,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:48,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 1135 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:48,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:48,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:48,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:48,311 INFO L124 PetriNetUnfolderBase]: 706/1310 cut-off events. [2024-06-28 01:44:48,311 INFO L125 PetriNetUnfolderBase]: For 8139/8154 co-relation queries the response was YES. [2024-06-28 01:44:48,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 1310 events. 706/1310 cut-off events. For 8139/8154 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6871 event pairs, 158 based on Foata normal form. 11/1268 useless extension candidates. Maximal degree in co-relation 5834. Up to 1076 conditions per place. [2024-06-28 01:44:48,319 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 115 selfloop transitions, 24 changer transitions 0/145 dead transitions. [2024-06-28 01:44:48,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 145 transitions, 1556 flow [2024-06-28 01:44:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 01:44:48,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 01:44:48,320 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 1135 flow. Second operand 7 states and 116 transitions. [2024-06-28 01:44:48,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 145 transitions, 1556 flow [2024-06-28 01:44:48,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 1445 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:48,336 INFO L231 Difference]: Finished difference. Result has 98 places, 119 transitions, 1104 flow [2024-06-28 01:44:48,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1104, PETRI_PLACES=98, PETRI_TRANSITIONS=119} [2024-06-28 01:44:48,337 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-06-28 01:44:48,337 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 119 transitions, 1104 flow [2024-06-28 01:44:48,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:48,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:48,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:48,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:44:48,338 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:48,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1920200354, now seen corresponding path program 1 times [2024-06-28 01:44:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:48,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865586520] [2024-06-28 01:44:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:48,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:48,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:48,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865586520] [2024-06-28 01:44:48,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865586520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:48,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:48,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:48,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162339922] [2024-06-28 01:44:48,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:48,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:48,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:49,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:49,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 119 transitions, 1104 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:49,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:49,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:49,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:49,410 INFO L124 PetriNetUnfolderBase]: 704/1285 cut-off events. [2024-06-28 01:44:49,410 INFO L125 PetriNetUnfolderBase]: For 7842/7842 co-relation queries the response was YES. [2024-06-28 01:44:49,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 1285 events. 704/1285 cut-off events. For 7842/7842 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6544 event pairs, 171 based on Foata normal form. 1/1242 useless extension candidates. Maximal degree in co-relation 5787. Up to 997 conditions per place. [2024-06-28 01:44:49,418 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 103 selfloop transitions, 37 changer transitions 0/146 dead transitions. [2024-06-28 01:44:49,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 146 transitions, 1504 flow [2024-06-28 01:44:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 01:44:49,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:44:49,419 INFO L175 Difference]: Start difference. First operand has 98 places, 119 transitions, 1104 flow. Second operand 7 states and 120 transitions. [2024-06-28 01:44:49,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 146 transitions, 1504 flow [2024-06-28 01:44:49,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 146 transitions, 1419 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:49,435 INFO L231 Difference]: Finished difference. Result has 100 places, 121 transitions, 1143 flow [2024-06-28 01:44:49,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1143, PETRI_PLACES=100, PETRI_TRANSITIONS=121} [2024-06-28 01:44:49,436 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 60 predicate places. [2024-06-28 01:44:49,436 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 1143 flow [2024-06-28 01:44:49,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:49,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:49,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:49,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:44:49,437 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:49,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1089960740, now seen corresponding path program 1 times [2024-06-28 01:44:49,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:49,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102985586] [2024-06-28 01:44:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:49,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:50,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:50,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102985586] [2024-06-28 01:44:50,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102985586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:50,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:50,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:50,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362214655] [2024-06-28 01:44:50,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:50,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:50,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:50,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:50,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 1143 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:50,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:50,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:50,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:50,510 INFO L124 PetriNetUnfolderBase]: 739/1364 cut-off events. [2024-06-28 01:44:50,510 INFO L125 PetriNetUnfolderBase]: For 8863/8863 co-relation queries the response was YES. [2024-06-28 01:44:50,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6178 conditions, 1364 events. 739/1364 cut-off events. For 8863/8863 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7163 event pairs, 163 based on Foata normal form. 2/1314 useless extension candidates. Maximal degree in co-relation 6131. Up to 996 conditions per place. [2024-06-28 01:44:50,518 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 115 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-28 01:44:50,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 165 transitions, 1673 flow [2024-06-28 01:44:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:44:50,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:44:50,522 INFO L175 Difference]: Start difference. First operand has 100 places, 121 transitions, 1143 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:44:50,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 165 transitions, 1673 flow [2024-06-28 01:44:50,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 165 transitions, 1609 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:50,545 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1305 flow [2024-06-28 01:44:50,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1305, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-28 01:44:50,546 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-06-28 01:44:50,546 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1305 flow [2024-06-28 01:44:50,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:50,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:50,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:44:50,547 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:50,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1086212840, now seen corresponding path program 2 times [2024-06-28 01:44:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:50,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737214281] [2024-06-28 01:44:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737214281] [2024-06-28 01:44:51,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737214281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:51,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:51,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:51,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240003872] [2024-06-28 01:44:51,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:51,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:51,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:51,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:51,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1305 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:51,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:51,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:51,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:51,730 INFO L124 PetriNetUnfolderBase]: 780/1450 cut-off events. [2024-06-28 01:44:51,730 INFO L125 PetriNetUnfolderBase]: For 11111/11111 co-relation queries the response was YES. [2024-06-28 01:44:51,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 1450 events. 780/1450 cut-off events. For 11111/11111 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7830 event pairs, 172 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 6920. Up to 995 conditions per place. [2024-06-28 01:44:51,740 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 118 selfloop transitions, 47 changer transitions 0/171 dead transitions. [2024-06-28 01:44:51,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 171 transitions, 1869 flow [2024-06-28 01:44:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 01:44:51,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:44:51,745 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1305 flow. Second operand 8 states and 141 transitions. [2024-06-28 01:44:51,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 171 transitions, 1869 flow [2024-06-28 01:44:51,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 171 transitions, 1808 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:51,767 INFO L231 Difference]: Finished difference. Result has 112 places, 138 transitions, 1496 flow [2024-06-28 01:44:51,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1496, PETRI_PLACES=112, PETRI_TRANSITIONS=138} [2024-06-28 01:44:51,768 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-06-28 01:44:51,768 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 138 transitions, 1496 flow [2024-06-28 01:44:51,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:51,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:51,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:51,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:44:51,769 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:51,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1086206082, now seen corresponding path program 1 times [2024-06-28 01:44:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187175106] [2024-06-28 01:44:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:51,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:52,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187175106] [2024-06-28 01:44:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187175106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:52,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:52,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:52,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802409274] [2024-06-28 01:44:52,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:52,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:52,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:52,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:52,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 138 transitions, 1496 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:52,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:52,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:52,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:52,973 INFO L124 PetriNetUnfolderBase]: 793/1440 cut-off events. [2024-06-28 01:44:52,973 INFO L125 PetriNetUnfolderBase]: For 13404/13404 co-relation queries the response was YES. [2024-06-28 01:44:52,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 1440 events. 793/1440 cut-off events. For 13404/13404 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7604 event pairs, 192 based on Foata normal form. 1/1392 useless extension candidates. Maximal degree in co-relation 7385. Up to 1224 conditions per place. [2024-06-28 01:44:52,982 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 144 selfloop transitions, 20 changer transitions 0/170 dead transitions. [2024-06-28 01:44:52,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 170 transitions, 1976 flow [2024-06-28 01:44:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 01:44:52,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-28 01:44:52,984 INFO L175 Difference]: Start difference. First operand has 112 places, 138 transitions, 1496 flow. Second operand 8 states and 131 transitions. [2024-06-28 01:44:52,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 170 transitions, 1976 flow [2024-06-28 01:44:53,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 170 transitions, 1875 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:53,010 INFO L231 Difference]: Finished difference. Result has 117 places, 141 transitions, 1489 flow [2024-06-28 01:44:53,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1489, PETRI_PLACES=117, PETRI_TRANSITIONS=141} [2024-06-28 01:44:53,011 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2024-06-28 01:44:53,011 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 141 transitions, 1489 flow [2024-06-28 01:44:53,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:53,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:53,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:44:53,011 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:53,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1086206330, now seen corresponding path program 3 times [2024-06-28 01:44:53,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:53,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853668599] [2024-06-28 01:44:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:53,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:53,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:53,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853668599] [2024-06-28 01:44:53,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853668599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:53,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:53,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604259130] [2024-06-28 01:44:53,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:53,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:53,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:53,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:53,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:53,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:53,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 141 transitions, 1489 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:53,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:53,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:54,034 INFO L124 PetriNetUnfolderBase]: 819/1483 cut-off events. [2024-06-28 01:44:54,034 INFO L125 PetriNetUnfolderBase]: For 13558/13558 co-relation queries the response was YES. [2024-06-28 01:44:54,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7680 conditions, 1483 events. 819/1483 cut-off events. For 13558/13558 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7802 event pairs, 193 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 7625. Up to 1252 conditions per place. [2024-06-28 01:44:54,042 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 148 selfloop transitions, 20 changer transitions 0/174 dead transitions. [2024-06-28 01:44:54,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 174 transitions, 1989 flow [2024-06-28 01:44:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:44:54,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:44:54,044 INFO L175 Difference]: Start difference. First operand has 117 places, 141 transitions, 1489 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:44:54,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 174 transitions, 1989 flow [2024-06-28 01:44:54,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 174 transitions, 1919 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:54,064 INFO L231 Difference]: Finished difference. Result has 119 places, 144 transitions, 1519 flow [2024-06-28 01:44:54,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1519, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2024-06-28 01:44:54,065 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2024-06-28 01:44:54,065 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 1519 flow [2024-06-28 01:44:54,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:54,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:54,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:54,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:44:54,066 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:54,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:54,066 INFO L85 PathProgramCache]: Analyzing trace with hash 138503102, now seen corresponding path program 2 times [2024-06-28 01:44:54,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:54,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029418069] [2024-06-28 01:44:54,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:54,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:54,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029418069] [2024-06-28 01:44:54,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029418069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:54,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:54,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188567129] [2024-06-28 01:44:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:54,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:54,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:54,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:54,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:54,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 144 transitions, 1519 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:54,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:54,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:54,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:55,119 INFO L124 PetriNetUnfolderBase]: 845/1545 cut-off events. [2024-06-28 01:44:55,119 INFO L125 PetriNetUnfolderBase]: For 15457/15475 co-relation queries the response was YES. [2024-06-28 01:44:55,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 1545 events. 845/1545 cut-off events. For 15457/15475 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8376 event pairs, 182 based on Foata normal form. 14/1500 useless extension candidates. Maximal degree in co-relation 8004. Up to 1269 conditions per place. [2024-06-28 01:44:55,129 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 146 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-28 01:44:55,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 2045 flow [2024-06-28 01:44:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:44:55,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-28 01:44:55,145 INFO L175 Difference]: Start difference. First operand has 119 places, 144 transitions, 1519 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:44:55,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 2045 flow [2024-06-28 01:44:55,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 179 transitions, 1967 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:55,168 INFO L231 Difference]: Finished difference. Result has 121 places, 147 transitions, 1555 flow [2024-06-28 01:44:55,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1555, PETRI_PLACES=121, PETRI_TRANSITIONS=147} [2024-06-28 01:44:55,169 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 81 predicate places. [2024-06-28 01:44:55,169 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 147 transitions, 1555 flow [2024-06-28 01:44:55,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:55,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:55,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:55,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:44:55,170 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:55,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash 138502854, now seen corresponding path program 4 times [2024-06-28 01:44:55,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:55,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098171919] [2024-06-28 01:44:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:55,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098171919] [2024-06-28 01:44:55,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098171919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:55,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:55,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876840110] [2024-06-28 01:44:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:55,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:55,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:55,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:55,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 147 transitions, 1555 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:55,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:55,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:55,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:56,211 INFO L124 PetriNetUnfolderBase]: 871/1591 cut-off events. [2024-06-28 01:44:56,212 INFO L125 PetriNetUnfolderBase]: For 16784/16802 co-relation queries the response was YES. [2024-06-28 01:44:56,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8385 conditions, 1591 events. 871/1591 cut-off events. For 16784/16802 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8692 event pairs, 183 based on Foata normal form. 14/1544 useless extension candidates. Maximal degree in co-relation 8328. Up to 1309 conditions per place. [2024-06-28 01:44:56,222 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 149 selfloop transitions, 27 changer transitions 0/182 dead transitions. [2024-06-28 01:44:56,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 182 transitions, 2097 flow [2024-06-28 01:44:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:44:56,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-28 01:44:56,223 INFO L175 Difference]: Start difference. First operand has 121 places, 147 transitions, 1555 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:44:56,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 182 transitions, 2097 flow [2024-06-28 01:44:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 182 transitions, 2009 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:56,250 INFO L231 Difference]: Finished difference. Result has 123 places, 150 transitions, 1589 flow [2024-06-28 01:44:56,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1589, PETRI_PLACES=123, PETRI_TRANSITIONS=150} [2024-06-28 01:44:56,250 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2024-06-28 01:44:56,250 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 150 transitions, 1589 flow [2024-06-28 01:44:56,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:56,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:56,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:56,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:44:56,251 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:56,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 138496344, now seen corresponding path program 5 times [2024-06-28 01:44:56,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:56,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334866615] [2024-06-28 01:44:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:56,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334866615] [2024-06-28 01:44:56,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334866615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:56,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:56,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:56,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699579799] [2024-06-28 01:44:56,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:56,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:56,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:56,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:56,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:56,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:56,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 150 transitions, 1589 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:56,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:56,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:56,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:57,388 INFO L124 PetriNetUnfolderBase]: 897/1619 cut-off events. [2024-06-28 01:44:57,389 INFO L125 PetriNetUnfolderBase]: For 18026/18032 co-relation queries the response was YES. [2024-06-28 01:44:57,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8687 conditions, 1619 events. 897/1619 cut-off events. For 18026/18032 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8722 event pairs, 161 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 8629. Up to 1113 conditions per place. [2024-06-28 01:44:57,398 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 125 selfloop transitions, 60 changer transitions 0/191 dead transitions. [2024-06-28 01:44:57,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 191 transitions, 2241 flow [2024-06-28 01:44:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:44:57,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:44:57,400 INFO L175 Difference]: Start difference. First operand has 123 places, 150 transitions, 1589 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:44:57,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 191 transitions, 2241 flow [2024-06-28 01:44:57,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 191 transitions, 2141 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:57,431 INFO L231 Difference]: Finished difference. Result has 127 places, 159 transitions, 1838 flow [2024-06-28 01:44:57,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1838, PETRI_PLACES=127, PETRI_TRANSITIONS=159} [2024-06-28 01:44:57,432 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2024-06-28 01:44:57,432 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 159 transitions, 1838 flow [2024-06-28 01:44:57,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:57,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:57,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:57,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:44:57,432 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:57,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash 146777064, now seen corresponding path program 6 times [2024-06-28 01:44:57,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:57,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442430762] [2024-06-28 01:44:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:57,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:57,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:57,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442430762] [2024-06-28 01:44:57,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442430762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:57,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:57,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:57,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728952309] [2024-06-28 01:44:58,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:58,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:58,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:58,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:58,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:58,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:58,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 159 transitions, 1838 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:58,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:58,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:58,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:58,409 INFO L124 PetriNetUnfolderBase]: 913/1641 cut-off events. [2024-06-28 01:44:58,409 INFO L125 PetriNetUnfolderBase]: For 21207/21225 co-relation queries the response was YES. [2024-06-28 01:44:58,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9230 conditions, 1641 events. 913/1641 cut-off events. For 21207/21225 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8854 event pairs, 188 based on Foata normal form. 14/1599 useless extension candidates. Maximal degree in co-relation 9169. Up to 1290 conditions per place. [2024-06-28 01:44:58,419 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 151 selfloop transitions, 38 changer transitions 0/195 dead transitions. [2024-06-28 01:44:58,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 195 transitions, 2424 flow [2024-06-28 01:44:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:44:58,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:44:58,421 INFO L175 Difference]: Start difference. First operand has 127 places, 159 transitions, 1838 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:44:58,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 195 transitions, 2424 flow [2024-06-28 01:44:58,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 195 transitions, 2289 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:58,457 INFO L231 Difference]: Finished difference. Result has 133 places, 162 transitions, 1859 flow [2024-06-28 01:44:58,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1859, PETRI_PLACES=133, PETRI_TRANSITIONS=162} [2024-06-28 01:44:58,458 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 93 predicate places. [2024-06-28 01:44:58,458 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 162 transitions, 1859 flow [2024-06-28 01:44:58,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:58,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:58,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:58,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:44:58,459 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:58,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 146777312, now seen corresponding path program 3 times [2024-06-28 01:44:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:58,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862944927] [2024-06-28 01:44:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:59,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:59,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862944927] [2024-06-28 01:44:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862944927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:59,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821056777] [2024-06-28 01:44:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:59,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:44:59,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 162 transitions, 1859 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:59,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:59,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:44:59,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:59,518 INFO L124 PetriNetUnfolderBase]: 964/1729 cut-off events. [2024-06-28 01:44:59,518 INFO L125 PetriNetUnfolderBase]: For 23248/23266 co-relation queries the response was YES. [2024-06-28 01:44:59,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9850 conditions, 1729 events. 964/1729 cut-off events. For 23248/23266 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9455 event pairs, 184 based on Foata normal form. 14/1684 useless extension candidates. Maximal degree in co-relation 9787. Up to 1310 conditions per place. [2024-06-28 01:44:59,532 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 156 selfloop transitions, 45 changer transitions 0/207 dead transitions. [2024-06-28 01:44:59,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 207 transitions, 2677 flow [2024-06-28 01:44:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:44:59,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:44:59,534 INFO L175 Difference]: Start difference. First operand has 133 places, 162 transitions, 1859 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:44:59,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 207 transitions, 2677 flow [2024-06-28 01:44:59,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 207 transitions, 2543 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:59,578 INFO L231 Difference]: Finished difference. Result has 135 places, 171 transitions, 2007 flow [2024-06-28 01:44:59,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2007, PETRI_PLACES=135, PETRI_TRANSITIONS=171} [2024-06-28 01:44:59,579 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 95 predicate places. [2024-06-28 01:44:59,579 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 171 transitions, 2007 flow [2024-06-28 01:44:59,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:59,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:59,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:59,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:44:59,580 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:59,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash 147073982, now seen corresponding path program 4 times [2024-06-28 01:44:59,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:59,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383482584] [2024-06-28 01:44:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:59,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:00,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:00,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383482584] [2024-06-28 01:45:00,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383482584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:00,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:00,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:00,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052596965] [2024-06-28 01:45:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:00,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:00,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:00,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:00,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:00,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 171 transitions, 2007 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:00,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:00,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:00,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:00,839 INFO L124 PetriNetUnfolderBase]: 960/1719 cut-off events. [2024-06-28 01:45:00,839 INFO L125 PetriNetUnfolderBase]: For 23037/23037 co-relation queries the response was YES. [2024-06-28 01:45:00,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 1719 events. 960/1719 cut-off events. For 23037/23037 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9314 event pairs, 209 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 9705. Up to 1460 conditions per place. [2024-06-28 01:45:00,850 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 176 selfloop transitions, 18 changer transitions 0/200 dead transitions. [2024-06-28 01:45:00,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 200 transitions, 2502 flow [2024-06-28 01:45:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:45:00,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:45:00,865 INFO L175 Difference]: Start difference. First operand has 135 places, 171 transitions, 2007 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:45:00,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 200 transitions, 2502 flow [2024-06-28 01:45:00,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 200 transitions, 2373 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:00,910 INFO L231 Difference]: Finished difference. Result has 140 places, 171 transitions, 1920 flow [2024-06-28 01:45:00,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1920, PETRI_PLACES=140, PETRI_TRANSITIONS=171} [2024-06-28 01:45:00,911 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 100 predicate places. [2024-06-28 01:45:00,911 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 171 transitions, 1920 flow [2024-06-28 01:45:00,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:00,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:00,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:00,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:45:00,912 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:00,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash 147084894, now seen corresponding path program 1 times [2024-06-28 01:45:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:00,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513049461] [2024-06-28 01:45:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:01,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:01,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513049461] [2024-06-28 01:45:01,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513049461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:01,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:01,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:01,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887457596] [2024-06-28 01:45:01,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:01,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:01,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:01,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:01,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:01,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 171 transitions, 1920 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:01,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:01,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:01,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:02,202 INFO L124 PetriNetUnfolderBase]: 964/1733 cut-off events. [2024-06-28 01:45:02,202 INFO L125 PetriNetUnfolderBase]: For 21184/21184 co-relation queries the response was YES. [2024-06-28 01:45:02,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9569 conditions, 1733 events. 964/1733 cut-off events. For 21184/21184 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9446 event pairs, 206 based on Foata normal form. 2/1676 useless extension candidates. Maximal degree in co-relation 9503. Up to 1475 conditions per place. [2024-06-28 01:45:02,214 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 179 selfloop transitions, 17 changer transitions 0/202 dead transitions. [2024-06-28 01:45:02,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 202 transitions, 2461 flow [2024-06-28 01:45:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 01:45:02,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-28 01:45:02,216 INFO L175 Difference]: Start difference. First operand has 140 places, 171 transitions, 1920 flow. Second operand 8 states and 131 transitions. [2024-06-28 01:45:02,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 202 transitions, 2461 flow [2024-06-28 01:45:02,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 202 transitions, 2396 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:02,258 INFO L231 Difference]: Finished difference. Result has 141 places, 173 transitions, 1942 flow [2024-06-28 01:45:02,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1942, PETRI_PLACES=141, PETRI_TRANSITIONS=173} [2024-06-28 01:45:02,259 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 101 predicate places. [2024-06-28 01:45:02,259 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 173 transitions, 1942 flow [2024-06-28 01:45:02,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:02,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:02,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:02,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:45:02,260 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:02,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1602298332, now seen corresponding path program 1 times [2024-06-28 01:45:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:02,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813269480] [2024-06-28 01:45:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:02,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:03,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:03,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813269480] [2024-06-28 01:45:03,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813269480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:03,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:03,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60222238] [2024-06-28 01:45:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:03,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:03,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:03,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:03,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 173 transitions, 1942 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:03,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:03,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:03,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:03,685 INFO L124 PetriNetUnfolderBase]: 982/1736 cut-off events. [2024-06-28 01:45:03,685 INFO L125 PetriNetUnfolderBase]: For 22534/22534 co-relation queries the response was YES. [2024-06-28 01:45:03,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9742 conditions, 1736 events. 982/1736 cut-off events. For 22534/22534 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9310 event pairs, 179 based on Foata normal form. 2/1689 useless extension candidates. Maximal degree in co-relation 9675. Up to 1433 conditions per place. [2024-06-28 01:45:03,696 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 168 selfloop transitions, 33 changer transitions 0/207 dead transitions. [2024-06-28 01:45:03,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 207 transitions, 2514 flow [2024-06-28 01:45:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:45:03,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:45:03,698 INFO L175 Difference]: Start difference. First operand has 141 places, 173 transitions, 1942 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:45:03,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 207 transitions, 2514 flow [2024-06-28 01:45:03,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 207 transitions, 2443 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:03,736 INFO L231 Difference]: Finished difference. Result has 144 places, 178 transitions, 2027 flow [2024-06-28 01:45:03,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2027, PETRI_PLACES=144, PETRI_TRANSITIONS=178} [2024-06-28 01:45:03,737 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 104 predicate places. [2024-06-28 01:45:03,737 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 178 transitions, 2027 flow [2024-06-28 01:45:03,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:03,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:03,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:03,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:45:03,738 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:03,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:03,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1605040902, now seen corresponding path program 2 times [2024-06-28 01:45:03,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:03,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88960020] [2024-06-28 01:45:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:03,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88960020] [2024-06-28 01:45:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88960020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:04,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:04,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410351312] [2024-06-28 01:45:04,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:04,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:04,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 178 transitions, 2027 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:04,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:04,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:04,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:04,959 INFO L124 PetriNetUnfolderBase]: 997/1761 cut-off events. [2024-06-28 01:45:04,959 INFO L125 PetriNetUnfolderBase]: For 24468/24468 co-relation queries the response was YES. [2024-06-28 01:45:04,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10050 conditions, 1761 events. 997/1761 cut-off events. For 24468/24468 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9481 event pairs, 220 based on Foata normal form. 2/1714 useless extension candidates. Maximal degree in co-relation 9981. Up to 1430 conditions per place. [2024-06-28 01:45:04,972 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 165 selfloop transitions, 39 changer transitions 0/210 dead transitions. [2024-06-28 01:45:04,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 210 transitions, 2611 flow [2024-06-28 01:45:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:45:04,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:45:04,974 INFO L175 Difference]: Start difference. First operand has 144 places, 178 transitions, 2027 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:45:04,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 210 transitions, 2611 flow [2024-06-28 01:45:05,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 210 transitions, 2497 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:05,022 INFO L231 Difference]: Finished difference. Result has 147 places, 180 transitions, 2060 flow [2024-06-28 01:45:05,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2060, PETRI_PLACES=147, PETRI_TRANSITIONS=180} [2024-06-28 01:45:05,023 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 107 predicate places. [2024-06-28 01:45:05,023 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 180 transitions, 2060 flow [2024-06-28 01:45:05,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:05,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:05,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:05,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:45:05,024 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:05,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1602359867, now seen corresponding path program 1 times [2024-06-28 01:45:05,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:05,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182243056] [2024-06-28 01:45:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:05,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:05,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182243056] [2024-06-28 01:45:05,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182243056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:05,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:05,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:05,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118249480] [2024-06-28 01:45:05,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:05,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:05,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:05,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:05,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 180 transitions, 2060 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:05,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:05,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:05,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:06,564 INFO L124 PetriNetUnfolderBase]: 1133/2038 cut-off events. [2024-06-28 01:45:06,564 INFO L125 PetriNetUnfolderBase]: For 29004/29004 co-relation queries the response was YES. [2024-06-28 01:45:06,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11811 conditions, 2038 events. 1133/2038 cut-off events. For 29004/29004 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11573 event pairs, 241 based on Foata normal form. 1/1966 useless extension candidates. Maximal degree in co-relation 11741. Up to 1551 conditions per place. [2024-06-28 01:45:06,579 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 194 selfloop transitions, 57 changer transitions 0/257 dead transitions. [2024-06-28 01:45:06,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 257 transitions, 3451 flow [2024-06-28 01:45:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:45:06,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-28 01:45:06,581 INFO L175 Difference]: Start difference. First operand has 147 places, 180 transitions, 2060 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:45:06,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 257 transitions, 3451 flow [2024-06-28 01:45:06,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 257 transitions, 3281 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:06,639 INFO L231 Difference]: Finished difference. Result has 154 places, 213 transitions, 2738 flow [2024-06-28 01:45:06,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2738, PETRI_PLACES=154, PETRI_TRANSITIONS=213} [2024-06-28 01:45:06,639 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 114 predicate places. [2024-06-28 01:45:06,639 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 213 transitions, 2738 flow [2024-06-28 01:45:06,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:06,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:06,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:06,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:45:06,640 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:06,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash -421672719, now seen corresponding path program 2 times [2024-06-28 01:45:06,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:06,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50158170] [2024-06-28 01:45:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:06,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:07,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:07,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50158170] [2024-06-28 01:45:07,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50158170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:07,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:07,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273384945] [2024-06-28 01:45:07,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:07,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:07,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 213 transitions, 2738 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:07,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:07,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:07,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:08,022 INFO L124 PetriNetUnfolderBase]: 1286/2290 cut-off events. [2024-06-28 01:45:08,022 INFO L125 PetriNetUnfolderBase]: For 34213/34213 co-relation queries the response was YES. [2024-06-28 01:45:08,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14123 conditions, 2290 events. 1286/2290 cut-off events. For 34213/34213 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13218 event pairs, 302 based on Foata normal form. 1/2218 useless extension candidates. Maximal degree in co-relation 14048. Up to 1750 conditions per place. [2024-06-28 01:45:08,044 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 196 selfloop transitions, 102 changer transitions 0/304 dead transitions. [2024-06-28 01:45:08,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 304 transitions, 4449 flow [2024-06-28 01:45:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:08,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:45:08,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:45:08,045 INFO L175 Difference]: Start difference. First operand has 154 places, 213 transitions, 2738 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:45:08,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 304 transitions, 4449 flow [2024-06-28 01:45:08,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 304 transitions, 4248 flow, removed 72 selfloop flow, removed 2 redundant places. [2024-06-28 01:45:08,147 INFO L231 Difference]: Finished difference. Result has 164 places, 265 transitions, 3844 flow [2024-06-28 01:45:08,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3844, PETRI_PLACES=164, PETRI_TRANSITIONS=265} [2024-06-28 01:45:08,147 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 124 predicate places. [2024-06-28 01:45:08,148 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 265 transitions, 3844 flow [2024-06-28 01:45:08,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:08,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:08,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:08,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:45:08,148 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:08,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash -684707884, now seen corresponding path program 1 times [2024-06-28 01:45:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:08,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003195573] [2024-06-28 01:45:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:08,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:08,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003195573] [2024-06-28 01:45:08,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003195573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:08,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:08,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:08,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155403776] [2024-06-28 01:45:08,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:08,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:08,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:08,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:08,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:08,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:08,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 265 transitions, 3844 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:08,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:08,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:08,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:09,458 INFO L124 PetriNetUnfolderBase]: 1312/2329 cut-off events. [2024-06-28 01:45:09,458 INFO L125 PetriNetUnfolderBase]: For 38903/38903 co-relation queries the response was YES. [2024-06-28 01:45:09,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14993 conditions, 2329 events. 1312/2329 cut-off events. For 38903/38903 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13428 event pairs, 257 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 14913. Up to 1785 conditions per place. [2024-06-28 01:45:09,474 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 217 selfloop transitions, 92 changer transitions 0/315 dead transitions. [2024-06-28 01:45:09,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 315 transitions, 4782 flow [2024-06-28 01:45:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:45:09,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-28 01:45:09,475 INFO L175 Difference]: Start difference. First operand has 164 places, 265 transitions, 3844 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:45:09,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 315 transitions, 4782 flow [2024-06-28 01:45:09,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 315 transitions, 4627 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:09,569 INFO L231 Difference]: Finished difference. Result has 172 places, 273 transitions, 4044 flow [2024-06-28 01:45:09,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4044, PETRI_PLACES=172, PETRI_TRANSITIONS=273} [2024-06-28 01:45:09,570 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-06-28 01:45:09,570 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 273 transitions, 4044 flow [2024-06-28 01:45:09,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:09,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:09,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:09,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:45:09,570 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:09,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1684010625, now seen corresponding path program 3 times [2024-06-28 01:45:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:09,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145319685] [2024-06-28 01:45:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:09,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:10,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:10,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145319685] [2024-06-28 01:45:10,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145319685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:10,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:10,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:10,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46377890] [2024-06-28 01:45:10,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:10,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:10,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:10,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:10,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:10,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:10,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 273 transitions, 4044 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:10,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:10,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:10,898 INFO L124 PetriNetUnfolderBase]: 1463/2607 cut-off events. [2024-06-28 01:45:10,898 INFO L125 PetriNetUnfolderBase]: For 44756/44756 co-relation queries the response was YES. [2024-06-28 01:45:10,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17009 conditions, 2607 events. 1463/2607 cut-off events. For 44756/44756 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15625 event pairs, 316 based on Foata normal form. 1/2521 useless extension candidates. Maximal degree in co-relation 16927. Up to 1922 conditions per place. [2024-06-28 01:45:10,930 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 236 selfloop transitions, 120 changer transitions 0/362 dead transitions. [2024-06-28 01:45:10,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 362 transitions, 5825 flow [2024-06-28 01:45:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:45:10,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:45:10,932 INFO L175 Difference]: Start difference. First operand has 172 places, 273 transitions, 4044 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:45:10,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 362 transitions, 5825 flow [2024-06-28 01:45:11,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 362 transitions, 5569 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:11,066 INFO L231 Difference]: Finished difference. Result has 178 places, 321 transitions, 5074 flow [2024-06-28 01:45:11,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5074, PETRI_PLACES=178, PETRI_TRANSITIONS=321} [2024-06-28 01:45:11,067 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 138 predicate places. [2024-06-28 01:45:11,067 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 321 transitions, 5074 flow [2024-06-28 01:45:11,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:11,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:11,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:11,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:45:11,067 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:11,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1794279278, now seen corresponding path program 2 times [2024-06-28 01:45:11,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:11,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953054973] [2024-06-28 01:45:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:11,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:11,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953054973] [2024-06-28 01:45:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953054973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:11,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:11,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:11,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029426396] [2024-06-28 01:45:11,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:11,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:11,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:11,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 321 transitions, 5074 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:11,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:11,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:11,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:12,310 INFO L124 PetriNetUnfolderBase]: 1507/2678 cut-off events. [2024-06-28 01:45:12,310 INFO L125 PetriNetUnfolderBase]: For 50147/50147 co-relation queries the response was YES. [2024-06-28 01:45:12,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17854 conditions, 2678 events. 1507/2678 cut-off events. For 50147/50147 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16116 event pairs, 331 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 17769. Up to 2020 conditions per place. [2024-06-28 01:45:12,336 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 253 selfloop transitions, 111 changer transitions 0/370 dead transitions. [2024-06-28 01:45:12,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 370 transitions, 6083 flow [2024-06-28 01:45:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:45:12,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 01:45:12,339 INFO L175 Difference]: Start difference. First operand has 178 places, 321 transitions, 5074 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:45:12,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 370 transitions, 6083 flow [2024-06-28 01:45:12,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 370 transitions, 5920 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:12,485 INFO L231 Difference]: Finished difference. Result has 186 places, 328 transitions, 5279 flow [2024-06-28 01:45:12,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5279, PETRI_PLACES=186, PETRI_TRANSITIONS=328} [2024-06-28 01:45:12,485 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 146 predicate places. [2024-06-28 01:45:12,485 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 328 transitions, 5279 flow [2024-06-28 01:45:12,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:12,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:12,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:12,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:45:12,486 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:12,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:12,486 INFO L85 PathProgramCache]: Analyzing trace with hash -194757630, now seen corresponding path program 3 times [2024-06-28 01:45:12,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:12,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253483183] [2024-06-28 01:45:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:12,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:13,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:13,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253483183] [2024-06-28 01:45:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253483183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:13,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366844543] [2024-06-28 01:45:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:13,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:13,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 328 transitions, 5279 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:13,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:13,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:13,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:13,795 INFO L124 PetriNetUnfolderBase]: 1703/2948 cut-off events. [2024-06-28 01:45:13,795 INFO L125 PetriNetUnfolderBase]: For 62724/62724 co-relation queries the response was YES. [2024-06-28 01:45:13,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20199 conditions, 2948 events. 1703/2948 cut-off events. For 62724/62724 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17659 event pairs, 465 based on Foata normal form. 2/2875 useless extension candidates. Maximal degree in co-relation 20112. Up to 2469 conditions per place. [2024-06-28 01:45:13,821 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 347 selfloop transitions, 41 changer transitions 0/394 dead transitions. [2024-06-28 01:45:13,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 394 transitions, 6821 flow [2024-06-28 01:45:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:45:13,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 01:45:13,833 INFO L175 Difference]: Start difference. First operand has 186 places, 328 transitions, 5279 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:45:13,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 394 transitions, 6821 flow [2024-06-28 01:45:13,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 394 transitions, 6641 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:14,004 INFO L231 Difference]: Finished difference. Result has 195 places, 353 transitions, 5697 flow [2024-06-28 01:45:14,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5099, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5697, PETRI_PLACES=195, PETRI_TRANSITIONS=353} [2024-06-28 01:45:14,004 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 155 predicate places. [2024-06-28 01:45:14,005 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 353 transitions, 5697 flow [2024-06-28 01:45:14,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:14,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:14,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:14,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:45:14,005 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:14,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash -194750190, now seen corresponding path program 4 times [2024-06-28 01:45:14,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:14,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361664148] [2024-06-28 01:45:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:14,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:14,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361664148] [2024-06-28 01:45:14,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361664148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:14,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:14,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:14,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803636362] [2024-06-28 01:45:14,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:14,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:14,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:14,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:14,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 353 transitions, 5697 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:14,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:14,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:14,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:15,319 INFO L124 PetriNetUnfolderBase]: 1697/2940 cut-off events. [2024-06-28 01:45:15,319 INFO L125 PetriNetUnfolderBase]: For 63487/63487 co-relation queries the response was YES. [2024-06-28 01:45:15,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20294 conditions, 2940 events. 1697/2940 cut-off events. For 63487/63487 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 17645 event pairs, 464 based on Foata normal form. 4/2869 useless extension candidates. Maximal degree in co-relation 20203. Up to 2468 conditions per place. [2024-06-28 01:45:15,345 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 347 selfloop transitions, 40 changer transitions 0/393 dead transitions. [2024-06-28 01:45:15,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 393 transitions, 6727 flow [2024-06-28 01:45:15,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:45:15,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:45:15,347 INFO L175 Difference]: Start difference. First operand has 195 places, 353 transitions, 5697 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:45:15,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 393 transitions, 6727 flow [2024-06-28 01:45:15,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 393 transitions, 6519 flow, removed 95 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:15,536 INFO L231 Difference]: Finished difference. Result has 203 places, 354 transitions, 5594 flow [2024-06-28 01:45:15,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5489, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5594, PETRI_PLACES=203, PETRI_TRANSITIONS=354} [2024-06-28 01:45:15,537 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 163 predicate places. [2024-06-28 01:45:15,537 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 354 transitions, 5594 flow [2024-06-28 01:45:15,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:15,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:15,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:15,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:45:15,537 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:15,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:15,538 INFO L85 PathProgramCache]: Analyzing trace with hash -194965392, now seen corresponding path program 3 times [2024-06-28 01:45:15,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:15,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786657497] [2024-06-28 01:45:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:15,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:16,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:16,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786657497] [2024-06-28 01:45:16,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786657497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:16,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:16,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:16,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355550569] [2024-06-28 01:45:16,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:16,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:16,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:16,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:16,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:16,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:16,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 354 transitions, 5594 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:16,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:16,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:16,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:17,018 INFO L124 PetriNetUnfolderBase]: 1738/2990 cut-off events. [2024-06-28 01:45:17,018 INFO L125 PetriNetUnfolderBase]: For 59995/59995 co-relation queries the response was YES. [2024-06-28 01:45:17,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20463 conditions, 2990 events. 1738/2990 cut-off events. For 59995/59995 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17792 event pairs, 344 based on Foata normal form. 2/2918 useless extension candidates. Maximal degree in co-relation 20369. Up to 2481 conditions per place. [2024-06-28 01:45:17,043 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 297 selfloop transitions, 94 changer transitions 0/397 dead transitions. [2024-06-28 01:45:17,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 397 transitions, 6751 flow [2024-06-28 01:45:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:45:17,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:45:17,045 INFO L175 Difference]: Start difference. First operand has 203 places, 354 transitions, 5594 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:45:17,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 397 transitions, 6751 flow [2024-06-28 01:45:17,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 397 transitions, 6689 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:17,219 INFO L231 Difference]: Finished difference. Result has 208 places, 366 transitions, 6034 flow [2024-06-28 01:45:17,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5532, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6034, PETRI_PLACES=208, PETRI_TRANSITIONS=366} [2024-06-28 01:45:17,220 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 168 predicate places. [2024-06-28 01:45:17,220 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 366 transitions, 6034 flow [2024-06-28 01:45:17,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:17,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:17,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:17,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:45:17,220 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:17,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1677884849, now seen corresponding path program 1 times [2024-06-28 01:45:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:17,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836578319] [2024-06-28 01:45:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:17,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:18,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:18,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836578319] [2024-06-28 01:45:18,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836578319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:18,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:18,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513573526] [2024-06-28 01:45:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:18,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:18,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:18,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:18,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:18,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:18,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 366 transitions, 6034 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:18,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:18,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:18,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:18,892 INFO L124 PetriNetUnfolderBase]: 1734/3027 cut-off events. [2024-06-28 01:45:18,892 INFO L125 PetriNetUnfolderBase]: For 64157/64157 co-relation queries the response was YES. [2024-06-28 01:45:18,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20847 conditions, 3027 events. 1734/3027 cut-off events. For 64157/64157 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18360 event pairs, 502 based on Foata normal form. 1/2943 useless extension candidates. Maximal degree in co-relation 20750. Up to 2679 conditions per place. [2024-06-28 01:45:18,921 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 365 selfloop transitions, 30 changer transitions 0/401 dead transitions. [2024-06-28 01:45:18,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 401 transitions, 6987 flow [2024-06-28 01:45:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:45:18,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 01:45:18,923 INFO L175 Difference]: Start difference. First operand has 208 places, 366 transitions, 6034 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:45:18,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 401 transitions, 6987 flow [2024-06-28 01:45:19,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 401 transitions, 6786 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:19,145 INFO L231 Difference]: Finished difference. Result has 214 places, 367 transitions, 5910 flow [2024-06-28 01:45:19,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5834, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5910, PETRI_PLACES=214, PETRI_TRANSITIONS=367} [2024-06-28 01:45:19,145 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 174 predicate places. [2024-06-28 01:45:19,146 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 367 transitions, 5910 flow [2024-06-28 01:45:19,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:19,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:19,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:19,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:45:19,146 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:19,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash -194959440, now seen corresponding path program 5 times [2024-06-28 01:45:19,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:19,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457496683] [2024-06-28 01:45:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:19,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:19,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457496683] [2024-06-28 01:45:19,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457496683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:19,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297251239] [2024-06-28 01:45:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:19,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:19,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:19,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 367 transitions, 5910 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:19,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:19,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:19,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:20,860 INFO L124 PetriNetUnfolderBase]: 1916/3386 cut-off events. [2024-06-28 01:45:20,860 INFO L125 PetriNetUnfolderBase]: For 75643/75643 co-relation queries the response was YES. [2024-06-28 01:45:20,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23231 conditions, 3386 events. 1916/3386 cut-off events. For 75643/75643 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21316 event pairs, 383 based on Foata normal form. 2/3275 useless extension candidates. Maximal degree in co-relation 23132. Up to 1806 conditions per place. [2024-06-28 01:45:20,889 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 289 selfloop transitions, 142 changer transitions 0/437 dead transitions. [2024-06-28 01:45:20,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 437 transitions, 7570 flow [2024-06-28 01:45:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:45:20,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-28 01:45:20,891 INFO L175 Difference]: Start difference. First operand has 214 places, 367 transitions, 5910 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:45:20,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 437 transitions, 7570 flow [2024-06-28 01:45:21,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 437 transitions, 7481 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:21,088 INFO L231 Difference]: Finished difference. Result has 221 places, 384 transitions, 6545 flow [2024-06-28 01:45:21,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5821, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6545, PETRI_PLACES=221, PETRI_TRANSITIONS=384} [2024-06-28 01:45:21,089 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 181 predicate places. [2024-06-28 01:45:21,089 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 384 transitions, 6545 flow [2024-06-28 01:45:21,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:21,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:21,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:21,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:45:21,089 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash 570956404, now seen corresponding path program 6 times [2024-06-28 01:45:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812413702] [2024-06-28 01:45:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812413702] [2024-06-28 01:45:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812413702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:21,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:21,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:21,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971923974] [2024-06-28 01:45:21,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:21,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:21,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:21,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 384 transitions, 6545 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:21,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:21,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:21,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:22,666 INFO L124 PetriNetUnfolderBase]: 1942/3406 cut-off events. [2024-06-28 01:45:22,666 INFO L125 PetriNetUnfolderBase]: For 83536/83536 co-relation queries the response was YES. [2024-06-28 01:45:22,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24802 conditions, 3406 events. 1942/3406 cut-off events. For 83536/83536 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21369 event pairs, 329 based on Foata normal form. 2/3303 useless extension candidates. Maximal degree in co-relation 24699. Up to 2477 conditions per place. [2024-06-28 01:45:22,704 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 276 selfloop transitions, 142 changer transitions 0/424 dead transitions. [2024-06-28 01:45:22,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 424 transitions, 7643 flow [2024-06-28 01:45:22,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:45:22,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:45:22,706 INFO L175 Difference]: Start difference. First operand has 221 places, 384 transitions, 6545 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:45:22,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 424 transitions, 7643 flow [2024-06-28 01:45:22,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 424 transitions, 7460 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:22,981 INFO L231 Difference]: Finished difference. Result has 226 places, 387 transitions, 6778 flow [2024-06-28 01:45:22,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6362, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6778, PETRI_PLACES=226, PETRI_TRANSITIONS=387} [2024-06-28 01:45:22,983 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 186 predicate places. [2024-06-28 01:45:22,983 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 387 transitions, 6778 flow [2024-06-28 01:45:22,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:22,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:22,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:22,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:45:22,983 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:22,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash 687135352, now seen corresponding path program 4 times [2024-06-28 01:45:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742337334] [2024-06-28 01:45:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742337334] [2024-06-28 01:45:23,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742337334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:23,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666933016] [2024-06-28 01:45:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:23,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:23,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:23,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:23,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 387 transitions, 6778 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:23,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:23,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:23,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:24,679 INFO L124 PetriNetUnfolderBase]: 1957/3376 cut-off events. [2024-06-28 01:45:24,679 INFO L125 PetriNetUnfolderBase]: For 87193/87193 co-relation queries the response was YES. [2024-06-28 01:45:24,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25530 conditions, 3376 events. 1957/3376 cut-off events. For 87193/87193 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20728 event pairs, 319 based on Foata normal form. 2/3290 useless extension candidates. Maximal degree in co-relation 25425. Up to 2749 conditions per place. [2024-06-28 01:45:24,717 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 305 selfloop transitions, 104 changer transitions 0/415 dead transitions. [2024-06-28 01:45:24,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 415 transitions, 7802 flow [2024-06-28 01:45:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:45:24,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:45:24,719 INFO L175 Difference]: Start difference. First operand has 226 places, 387 transitions, 6778 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:45:24,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 415 transitions, 7802 flow [2024-06-28 01:45:24,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 415 transitions, 7450 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:24,972 INFO L231 Difference]: Finished difference. Result has 227 places, 389 transitions, 6728 flow [2024-06-28 01:45:24,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6426, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6728, PETRI_PLACES=227, PETRI_TRANSITIONS=389} [2024-06-28 01:45:24,974 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 187 predicate places. [2024-06-28 01:45:24,974 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 389 transitions, 6728 flow [2024-06-28 01:45:24,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:24,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:24,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:45:24,975 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:24,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1352605552, now seen corresponding path program 7 times [2024-06-28 01:45:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:24,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608786177] [2024-06-28 01:45:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:25,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:25,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608786177] [2024-06-28 01:45:25,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608786177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:25,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:25,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:25,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297139612] [2024-06-28 01:45:25,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:25,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:25,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:25,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:25,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:25,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:25,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 389 transitions, 6728 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:25,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:25,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:26,573 INFO L124 PetriNetUnfolderBase]: 1983/3605 cut-off events. [2024-06-28 01:45:26,573 INFO L125 PetriNetUnfolderBase]: For 91380/91380 co-relation queries the response was YES. [2024-06-28 01:45:26,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25919 conditions, 3605 events. 1983/3605 cut-off events. For 91380/91380 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23750 event pairs, 293 based on Foata normal form. 2/3456 useless extension candidates. Maximal degree in co-relation 25813. Up to 2499 conditions per place. [2024-06-28 01:45:26,605 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 268 selfloop transitions, 155 changer transitions 0/429 dead transitions. [2024-06-28 01:45:26,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 429 transitions, 7858 flow [2024-06-28 01:45:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:45:26,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-28 01:45:26,607 INFO L175 Difference]: Start difference. First operand has 227 places, 389 transitions, 6728 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:45:26,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 429 transitions, 7858 flow [2024-06-28 01:45:26,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 429 transitions, 7574 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:26,869 INFO L231 Difference]: Finished difference. Result has 230 places, 392 transitions, 6884 flow [2024-06-28 01:45:26,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6446, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6884, PETRI_PLACES=230, PETRI_TRANSITIONS=392} [2024-06-28 01:45:26,870 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 190 predicate places. [2024-06-28 01:45:26,870 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 392 transitions, 6884 flow [2024-06-28 01:45:26,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:26,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:26,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:45:26,871 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:26,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:26,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1352396023, now seen corresponding path program 2 times [2024-06-28 01:45:26,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:26,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841642550] [2024-06-28 01:45:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:26,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:27,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:27,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841642550] [2024-06-28 01:45:27,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841642550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:27,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:27,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496601984] [2024-06-28 01:45:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:27,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:27,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:27,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:27,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 392 transitions, 6884 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:27,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:27,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:27,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:28,722 INFO L124 PetriNetUnfolderBase]: 1981/3457 cut-off events. [2024-06-28 01:45:28,722 INFO L125 PetriNetUnfolderBase]: For 89789/89789 co-relation queries the response was YES. [2024-06-28 01:45:28,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25894 conditions, 3457 events. 1981/3457 cut-off events. For 89789/89789 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 21588 event pairs, 534 based on Foata normal form. 1/3359 useless extension candidates. Maximal degree in co-relation 25787. Up to 3021 conditions per place. [2024-06-28 01:45:28,760 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 377 selfloop transitions, 41 changer transitions 0/424 dead transitions. [2024-06-28 01:45:28,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 424 transitions, 7884 flow [2024-06-28 01:45:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:45:28,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-28 01:45:28,761 INFO L175 Difference]: Start difference. First operand has 230 places, 392 transitions, 6884 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:45:28,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 424 transitions, 7884 flow [2024-06-28 01:45:29,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 424 transitions, 7452 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:29,029 INFO L231 Difference]: Finished difference. Result has 232 places, 392 transitions, 6544 flow [2024-06-28 01:45:29,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6452, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6544, PETRI_PLACES=232, PETRI_TRANSITIONS=392} [2024-06-28 01:45:29,029 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 192 predicate places. [2024-06-28 01:45:29,029 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 392 transitions, 6544 flow [2024-06-28 01:45:29,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:29,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:29,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:29,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:45:29,030 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:29,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:29,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1721585154, now seen corresponding path program 8 times [2024-06-28 01:45:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:29,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657842989] [2024-06-28 01:45:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:29,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657842989] [2024-06-28 01:45:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657842989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:29,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:29,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108938045] [2024-06-28 01:45:29,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:29,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:29,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:29,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:29,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:29,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 392 transitions, 6544 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:29,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:29,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:29,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:30,466 INFO L124 PetriNetUnfolderBase]: 2093/3596 cut-off events. [2024-06-28 01:45:30,466 INFO L125 PetriNetUnfolderBase]: For 95507/95507 co-relation queries the response was YES. [2024-06-28 01:45:30,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26897 conditions, 3596 events. 2093/3596 cut-off events. For 95507/95507 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 22334 event pairs, 501 based on Foata normal form. 4/3512 useless extension candidates. Maximal degree in co-relation 26789. Up to 2886 conditions per place. [2024-06-28 01:45:30,507 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 371 selfloop transitions, 59 changer transitions 0/436 dead transitions. [2024-06-28 01:45:30,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 436 transitions, 7920 flow [2024-06-28 01:45:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:45:30,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-28 01:45:30,509 INFO L175 Difference]: Start difference. First operand has 232 places, 392 transitions, 6544 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:45:30,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 436 transitions, 7920 flow [2024-06-28 01:45:30,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 436 transitions, 7764 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:30,829 INFO L231 Difference]: Finished difference. Result has 231 places, 399 transitions, 6766 flow [2024-06-28 01:45:30,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6390, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6766, PETRI_PLACES=231, PETRI_TRANSITIONS=399} [2024-06-28 01:45:30,830 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 191 predicate places. [2024-06-28 01:45:30,830 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 399 transitions, 6766 flow [2024-06-28 01:45:30,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:30,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:30,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:30,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:45:30,831 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:30,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:30,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1721577714, now seen corresponding path program 9 times [2024-06-28 01:45:30,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:30,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358230567] [2024-06-28 01:45:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:30,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:31,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358230567] [2024-06-28 01:45:31,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358230567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:31,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:31,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191059930] [2024-06-28 01:45:31,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:31,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:31,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:31,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 399 transitions, 6766 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:31,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:31,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:31,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:32,249 INFO L124 PetriNetUnfolderBase]: 2089/3590 cut-off events. [2024-06-28 01:45:32,249 INFO L125 PetriNetUnfolderBase]: For 95725/95725 co-relation queries the response was YES. [2024-06-28 01:45:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27119 conditions, 3590 events. 2089/3590 cut-off events. For 95725/95725 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 22271 event pairs, 501 based on Foata normal form. 2/3504 useless extension candidates. Maximal degree in co-relation 27012. Up to 2885 conditions per place. [2024-06-28 01:45:32,288 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 369 selfloop transitions, 63 changer transitions 0/438 dead transitions. [2024-06-28 01:45:32,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 438 transitions, 8014 flow [2024-06-28 01:45:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:32,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:45:32,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:45:32,289 INFO L175 Difference]: Start difference. First operand has 231 places, 399 transitions, 6766 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:45:32,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 438 transitions, 8014 flow [2024-06-28 01:45:32,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 438 transitions, 7833 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:32,593 INFO L231 Difference]: Finished difference. Result has 234 places, 402 transitions, 6845 flow [2024-06-28 01:45:32,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6599, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6845, PETRI_PLACES=234, PETRI_TRANSITIONS=402} [2024-06-28 01:45:32,594 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 194 predicate places. [2024-06-28 01:45:32,594 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 402 transitions, 6845 flow [2024-06-28 01:45:32,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:32,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:32,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:32,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:45:32,595 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:32,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1585608, now seen corresponding path program 5 times [2024-06-28 01:45:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:32,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535974576] [2024-06-28 01:45:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:33,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:33,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535974576] [2024-06-28 01:45:33,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535974576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:33,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:33,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:33,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545627230] [2024-06-28 01:45:33,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:33,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:33,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:33,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 402 transitions, 6845 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:33,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:33,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:33,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:34,429 INFO L124 PetriNetUnfolderBase]: 2089/3582 cut-off events. [2024-06-28 01:45:34,429 INFO L125 PetriNetUnfolderBase]: For 89914/89914 co-relation queries the response was YES. [2024-06-28 01:45:34,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26978 conditions, 3582 events. 2089/3582 cut-off events. For 89914/89914 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 22250 event pairs, 287 based on Foata normal form. 2/3492 useless extension candidates. Maximal degree in co-relation 26870. Up to 2932 conditions per place. [2024-06-28 01:45:34,463 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 315 selfloop transitions, 108 changer transitions 0/429 dead transitions. [2024-06-28 01:45:34,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 429 transitions, 7907 flow [2024-06-28 01:45:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:45:34,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:45:34,465 INFO L175 Difference]: Start difference. First operand has 234 places, 402 transitions, 6845 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:45:34,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 429 transitions, 7907 flow [2024-06-28 01:45:34,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 429 transitions, 7723 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:34,780 INFO L231 Difference]: Finished difference. Result has 235 places, 404 transitions, 6970 flow [2024-06-28 01:45:34,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6661, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6970, PETRI_PLACES=235, PETRI_TRANSITIONS=404} [2024-06-28 01:45:34,781 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 195 predicate places. [2024-06-28 01:45:34,781 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 404 transitions, 6970 flow [2024-06-28 01:45:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:34,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:34,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:34,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:45:34,781 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:34,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:34,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1579656, now seen corresponding path program 10 times [2024-06-28 01:45:34,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:34,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286918937] [2024-06-28 01:45:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:34,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:35,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286918937] [2024-06-28 01:45:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286918937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:35,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329386552] [2024-06-28 01:45:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:35,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:35,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:35,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:35,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:35,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:35,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 404 transitions, 6970 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:35,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:35,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:35,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:36,406 INFO L124 PetriNetUnfolderBase]: 2115/3643 cut-off events. [2024-06-28 01:45:36,407 INFO L125 PetriNetUnfolderBase]: For 94088/94088 co-relation queries the response was YES. [2024-06-28 01:45:36,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27367 conditions, 3643 events. 2115/3643 cut-off events. For 94088/94088 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 22797 event pairs, 216 based on Foata normal form. 2/3546 useless extension candidates. Maximal degree in co-relation 27259. Up to 2702 conditions per place. [2024-06-28 01:45:36,446 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 280 selfloop transitions, 157 changer transitions 0/443 dead transitions. [2024-06-28 01:45:36,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 443 transitions, 8146 flow [2024-06-28 01:45:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:45:36,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-28 01:45:36,448 INFO L175 Difference]: Start difference. First operand has 235 places, 404 transitions, 6970 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:45:36,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 443 transitions, 8146 flow [2024-06-28 01:45:36,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 443 transitions, 7853 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:36,794 INFO L231 Difference]: Finished difference. Result has 238 places, 407 transitions, 7127 flow [2024-06-28 01:45:36,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7127, PETRI_PLACES=238, PETRI_TRANSITIONS=407} [2024-06-28 01:45:36,795 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 198 predicate places. [2024-06-28 01:45:36,795 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 407 transitions, 7127 flow [2024-06-28 01:45:36,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:36,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:36,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:36,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:45:36,795 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:36,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash -133880240, now seen corresponding path program 11 times [2024-06-28 01:45:36,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:36,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681333318] [2024-06-28 01:45:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:36,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:37,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681333318] [2024-06-28 01:45:37,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681333318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:37,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:37,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:37,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132767097] [2024-06-28 01:45:37,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:37,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:37,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:37,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:37,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 407 transitions, 7127 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:37,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:37,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:37,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:38,395 INFO L124 PetriNetUnfolderBase]: 2197/3786 cut-off events. [2024-06-28 01:45:38,396 INFO L125 PetriNetUnfolderBase]: For 112217/112217 co-relation queries the response was YES. [2024-06-28 01:45:38,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28979 conditions, 3786 events. 2197/3786 cut-off events. For 112217/112217 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 23787 event pairs, 667 based on Foata normal form. 4/3692 useless extension candidates. Maximal degree in co-relation 28870. Up to 3306 conditions per place. [2024-06-28 01:45:38,438 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 418 selfloop transitions, 26 changer transitions 0/450 dead transitions. [2024-06-28 01:45:38,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 450 transitions, 8576 flow [2024-06-28 01:45:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:45:38,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:45:38,439 INFO L175 Difference]: Start difference. First operand has 238 places, 407 transitions, 7127 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:45:38,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 450 transitions, 8576 flow [2024-06-28 01:45:38,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 450 transitions, 8148 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:38,741 INFO L231 Difference]: Finished difference. Result has 240 places, 414 transitions, 7032 flow [2024-06-28 01:45:38,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6699, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7032, PETRI_PLACES=240, PETRI_TRANSITIONS=414} [2024-06-28 01:45:38,741 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 200 predicate places. [2024-06-28 01:45:38,741 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 414 transitions, 7032 flow [2024-06-28 01:45:38,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:38,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:38,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:38,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:45:38,742 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:38,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -143084450, now seen corresponding path program 12 times [2024-06-28 01:45:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:38,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024032229] [2024-06-28 01:45:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024032229] [2024-06-28 01:45:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024032229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:39,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:39,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094965358] [2024-06-28 01:45:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:39,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:39,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:39,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 414 transitions, 7032 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:39,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:39,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:39,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:40,277 INFO L124 PetriNetUnfolderBase]: 2363/4032 cut-off events. [2024-06-28 01:45:40,278 INFO L125 PetriNetUnfolderBase]: For 132676/132676 co-relation queries the response was YES. [2024-06-28 01:45:40,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31825 conditions, 4032 events. 2363/4032 cut-off events. For 132676/132676 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 25408 event pairs, 499 based on Foata normal form. 2/3938 useless extension candidates. Maximal degree in co-relation 31715. Up to 2795 conditions per place. [2024-06-28 01:45:40,328 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 368 selfloop transitions, 96 changer transitions 0/470 dead transitions. [2024-06-28 01:45:40,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 470 transitions, 9022 flow [2024-06-28 01:45:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:45:40,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-28 01:45:40,330 INFO L175 Difference]: Start difference. First operand has 240 places, 414 transitions, 7032 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:45:40,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 470 transitions, 9022 flow [2024-06-28 01:45:40,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 470 transitions, 8843 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:40,759 INFO L231 Difference]: Finished difference. Result has 245 places, 427 transitions, 7619 flow [2024-06-28 01:45:40,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6853, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7619, PETRI_PLACES=245, PETRI_TRANSITIONS=427} [2024-06-28 01:45:40,759 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 205 predicate places. [2024-06-28 01:45:40,759 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 427 transitions, 7619 flow [2024-06-28 01:45:40,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:40,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:40,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:40,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:45:40,760 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:40,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1370406, now seen corresponding path program 13 times [2024-06-28 01:45:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605221132] [2024-06-28 01:45:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:41,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:41,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605221132] [2024-06-28 01:45:41,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605221132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:41,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:41,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:41,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343035295] [2024-06-28 01:45:41,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:41,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:41,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:41,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:41,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:41,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 427 transitions, 7619 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:41,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:41,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:41,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:42,377 INFO L124 PetriNetUnfolderBase]: 2415/4208 cut-off events. [2024-06-28 01:45:42,378 INFO L125 PetriNetUnfolderBase]: For 141666/141666 co-relation queries the response was YES. [2024-06-28 01:45:42,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33219 conditions, 4208 events. 2415/4208 cut-off events. For 141666/141666 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 27354 event pairs, 565 based on Foata normal form. 4/4084 useless extension candidates. Maximal degree in co-relation 33106. Up to 3545 conditions per place. [2024-06-28 01:45:42,427 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 420 selfloop transitions, 44 changer transitions 0/470 dead transitions. [2024-06-28 01:45:42,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 470 transitions, 9031 flow [2024-06-28 01:45:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:45:42,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:45:42,438 INFO L175 Difference]: Start difference. First operand has 245 places, 427 transitions, 7619 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:45:42,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 470 transitions, 9031 flow [2024-06-28 01:45:42,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 470 transitions, 8775 flow, removed 112 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:42,861 INFO L231 Difference]: Finished difference. Result has 251 places, 431 transitions, 7622 flow [2024-06-28 01:45:42,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7375, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7622, PETRI_PLACES=251, PETRI_TRANSITIONS=431} [2024-06-28 01:45:42,862 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 211 predicate places. [2024-06-28 01:45:42,862 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 431 transitions, 7622 flow [2024-06-28 01:45:42,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:42,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:42,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:42,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:45:42,863 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:42,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:42,864 INFO L85 PathProgramCache]: Analyzing trace with hash -333463096, now seen corresponding path program 14 times [2024-06-28 01:45:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572511699] [2024-06-28 01:45:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:42,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:43,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572511699] [2024-06-28 01:45:43,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572511699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:43,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:43,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:43,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410583326] [2024-06-28 01:45:43,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:43,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:43,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:43,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:43,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:43,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 431 transitions, 7622 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:43,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:43,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:43,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:44,479 INFO L124 PetriNetUnfolderBase]: 2407/4100 cut-off events. [2024-06-28 01:45:44,479 INFO L125 PetriNetUnfolderBase]: For 129483/129483 co-relation queries the response was YES. [2024-06-28 01:45:44,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32178 conditions, 4100 events. 2407/4100 cut-off events. For 129483/129483 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 25888 event pairs, 505 based on Foata normal form. 4/4008 useless extension candidates. Maximal degree in co-relation 32063. Up to 2823 conditions per place. [2024-06-28 01:45:44,524 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 373 selfloop transitions, 96 changer transitions 0/475 dead transitions. [2024-06-28 01:45:44,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 475 transitions, 9132 flow [2024-06-28 01:45:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:45:44,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-28 01:45:44,526 INFO L175 Difference]: Start difference. First operand has 251 places, 431 transitions, 7622 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:45:44,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 475 transitions, 9132 flow [2024-06-28 01:45:44,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 475 transitions, 8717 flow, removed 124 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:44,924 INFO L231 Difference]: Finished difference. Result has 252 places, 431 transitions, 7406 flow [2024-06-28 01:45:44,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7207, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7406, PETRI_PLACES=252, PETRI_TRANSITIONS=431} [2024-06-28 01:45:44,925 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 212 predicate places. [2024-06-28 01:45:44,925 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 431 transitions, 7406 flow [2024-06-28 01:45:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:44,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:44,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:44,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:45:44,925 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:44,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:44,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1159058978, now seen corresponding path program 15 times [2024-06-28 01:45:44,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:44,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331181782] [2024-06-28 01:45:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:44,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:45,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331181782] [2024-06-28 01:45:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331181782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:45,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:45,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80249930] [2024-06-28 01:45:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:45,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:45,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:45,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:45,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 431 transitions, 7406 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:45,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:45,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:45,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:46,525 INFO L124 PetriNetUnfolderBase]: 2403/4190 cut-off events. [2024-06-28 01:45:46,525 INFO L125 PetriNetUnfolderBase]: For 117052/117052 co-relation queries the response was YES. [2024-06-28 01:45:46,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31189 conditions, 4190 events. 2403/4190 cut-off events. For 117052/117052 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 27221 event pairs, 563 based on Foata normal form. 2/4064 useless extension candidates. Maximal degree in co-relation 31074. Up to 3532 conditions per place. [2024-06-28 01:45:46,572 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 420 selfloop transitions, 47 changer transitions 0/473 dead transitions. [2024-06-28 01:45:46,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 473 transitions, 8796 flow [2024-06-28 01:45:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:45:46,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-28 01:45:46,573 INFO L175 Difference]: Start difference. First operand has 252 places, 431 transitions, 7406 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:45:46,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 473 transitions, 8796 flow [2024-06-28 01:45:46,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 473 transitions, 8566 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:46,937 INFO L231 Difference]: Finished difference. Result has 253 places, 434 transitions, 7406 flow [2024-06-28 01:45:46,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7180, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7406, PETRI_PLACES=253, PETRI_TRANSITIONS=434} [2024-06-28 01:45:46,938 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 213 predicate places. [2024-06-28 01:45:46,938 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 434 transitions, 7406 flow [2024-06-28 01:45:46,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:46,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:46,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:46,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:45:46,938 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:46,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:46,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1269206592, now seen corresponding path program 1 times [2024-06-28 01:45:46,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:46,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667125868] [2024-06-28 01:45:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:46,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:47,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:47,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667125868] [2024-06-28 01:45:47,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667125868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:47,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:47,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:45:47,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962494524] [2024-06-28 01:45:47,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:47,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:45:47,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:47,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:45:47,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:45:47,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-28 01:45:47,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 434 transitions, 7406 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:47,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:47,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-28 01:45:47,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:47,839 INFO L124 PetriNetUnfolderBase]: 2080/3767 cut-off events. [2024-06-28 01:45:47,840 INFO L125 PetriNetUnfolderBase]: For 116217/116455 co-relation queries the response was YES. [2024-06-28 01:45:47,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28381 conditions, 3767 events. 2080/3767 cut-off events. For 116217/116455 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25362 event pairs, 197 based on Foata normal form. 162/3822 useless extension candidates. Maximal degree in co-relation 28267. Up to 1090 conditions per place. [2024-06-28 01:45:47,879 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 142 selfloop transitions, 33 changer transitions 202/541 dead transitions. [2024-06-28 01:45:47,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 541 transitions, 9568 flow [2024-06-28 01:45:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 01:45:47,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-06-28 01:45:47,881 INFO L175 Difference]: Start difference. First operand has 253 places, 434 transitions, 7406 flow. Second operand 8 states and 170 transitions. [2024-06-28 01:45:47,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 541 transitions, 9568 flow [2024-06-28 01:45:48,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 541 transitions, 9311 flow, removed 85 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:48,267 INFO L231 Difference]: Finished difference. Result has 259 places, 329 transitions, 5578 flow [2024-06-28 01:45:48,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7214, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5578, PETRI_PLACES=259, PETRI_TRANSITIONS=329} [2024-06-28 01:45:48,268 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 219 predicate places. [2024-06-28 01:45:48,268 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 329 transitions, 5578 flow [2024-06-28 01:45:48,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:48,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:48,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:48,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:45:48,268 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:48,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:48,269 INFO L85 PathProgramCache]: Analyzing trace with hash -268188537, now seen corresponding path program 1 times [2024-06-28 01:45:48,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:48,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874535924] [2024-06-28 01:45:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:48,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874535924] [2024-06-28 01:45:49,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874535924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:49,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:49,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980858673] [2024-06-28 01:45:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:49,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:49,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 329 transitions, 5578 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:49,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:49,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:49,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:50,176 INFO L124 PetriNetUnfolderBase]: 1863/3083 cut-off events. [2024-06-28 01:45:50,176 INFO L125 PetriNetUnfolderBase]: For 106839/106839 co-relation queries the response was YES. [2024-06-28 01:45:50,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24919 conditions, 3083 events. 1863/3083 cut-off events. For 106839/106839 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17395 event pairs, 453 based on Foata normal form. 2/3084 useless extension candidates. Maximal degree in co-relation 24800. Up to 2742 conditions per place. [2024-06-28 01:45:50,215 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 307 selfloop transitions, 57 changer transitions 0/370 dead transitions. [2024-06-28 01:45:50,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 370 transitions, 6563 flow [2024-06-28 01:45:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:45:50,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 01:45:50,216 INFO L175 Difference]: Start difference. First operand has 259 places, 329 transitions, 5578 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:45:50,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 370 transitions, 6563 flow [2024-06-28 01:45:50,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 370 transitions, 5921 flow, removed 12 selfloop flow, removed 29 redundant places. [2024-06-28 01:45:50,514 INFO L231 Difference]: Finished difference. Result has 238 places, 334 transitions, 5189 flow [2024-06-28 01:45:50,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4946, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5189, PETRI_PLACES=238, PETRI_TRANSITIONS=334} [2024-06-28 01:45:50,515 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 198 predicate places. [2024-06-28 01:45:50,515 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 334 transitions, 5189 flow [2024-06-28 01:45:50,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:50,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:50,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:50,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:45:50,516 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:50,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:50,516 INFO L85 PathProgramCache]: Analyzing trace with hash 696939239, now seen corresponding path program 2 times [2024-06-28 01:45:50,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:50,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257242898] [2024-06-28 01:45:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:50,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257242898] [2024-06-28 01:45:51,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257242898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:51,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:51,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:51,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301786118] [2024-06-28 01:45:51,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:51,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:51,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:51,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:51,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 334 transitions, 5189 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:51,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:51,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:51,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:52,243 INFO L124 PetriNetUnfolderBase]: 1930/3210 cut-off events. [2024-06-28 01:45:52,243 INFO L125 PetriNetUnfolderBase]: For 102970/102970 co-relation queries the response was YES. [2024-06-28 01:45:52,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24449 conditions, 3210 events. 1930/3210 cut-off events. For 102970/102970 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 18528 event pairs, 487 based on Foata normal form. 2/3168 useless extension candidates. Maximal degree in co-relation 24340. Up to 2830 conditions per place. [2024-06-28 01:45:52,278 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 308 selfloop transitions, 67 changer transitions 0/381 dead transitions. [2024-06-28 01:45:52,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 381 transitions, 6358 flow [2024-06-28 01:45:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:45:52,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 01:45:52,280 INFO L175 Difference]: Start difference. First operand has 238 places, 334 transitions, 5189 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:45:52,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 381 transitions, 6358 flow [2024-06-28 01:45:52,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 381 transitions, 6024 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:52,567 INFO L231 Difference]: Finished difference. Result has 243 places, 346 transitions, 5318 flow [2024-06-28 01:45:52,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4946, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5318, PETRI_PLACES=243, PETRI_TRANSITIONS=346} [2024-06-28 01:45:52,568 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 203 predicate places. [2024-06-28 01:45:52,568 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 346 transitions, 5318 flow [2024-06-28 01:45:52,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:52,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:52,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:52,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:45:52,568 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:52,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:52,569 INFO L85 PathProgramCache]: Analyzing trace with hash 843512989, now seen corresponding path program 3 times [2024-06-28 01:45:52,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:52,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227913170] [2024-06-28 01:45:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:52,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:53,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:53,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227913170] [2024-06-28 01:45:53,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227913170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:53,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:53,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:53,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902142830] [2024-06-28 01:45:53,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:53,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:53,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:53,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:53,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:53,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:53,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 346 transitions, 5318 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:53,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:53,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:53,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:54,399 INFO L124 PetriNetUnfolderBase]: 2015/3363 cut-off events. [2024-06-28 01:45:54,400 INFO L125 PetriNetUnfolderBase]: For 109221/109221 co-relation queries the response was YES. [2024-06-28 01:45:54,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25165 conditions, 3363 events. 2015/3363 cut-off events. For 109221/109221 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 19740 event pairs, 420 based on Foata normal form. 2/3321 useless extension candidates. Maximal degree in co-relation 25054. Up to 2882 conditions per place. [2024-06-28 01:45:54,438 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 314 selfloop transitions, 76 changer transitions 0/396 dead transitions. [2024-06-28 01:45:54,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 396 transitions, 6532 flow [2024-06-28 01:45:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:45:54,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 01:45:54,439 INFO L175 Difference]: Start difference. First operand has 243 places, 346 transitions, 5318 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:45:54,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 396 transitions, 6532 flow [2024-06-28 01:45:54,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 396 transitions, 6259 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:54,775 INFO L231 Difference]: Finished difference. Result has 250 places, 362 transitions, 5565 flow [2024-06-28 01:45:54,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5132, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5565, PETRI_PLACES=250, PETRI_TRANSITIONS=362} [2024-06-28 01:45:54,776 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 210 predicate places. [2024-06-28 01:45:54,776 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 362 transitions, 5565 flow [2024-06-28 01:45:54,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:54,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:54,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:54,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:45:54,776 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:54,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:54,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2012287679, now seen corresponding path program 4 times [2024-06-28 01:45:54,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:54,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162965732] [2024-06-28 01:45:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:54,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:55,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162965732] [2024-06-28 01:45:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162965732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:55,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:55,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:55,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152052325] [2024-06-28 01:45:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:55,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:55,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:55,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 362 transitions, 5565 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:55,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:55,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:55,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:56,586 INFO L124 PetriNetUnfolderBase]: 2045/3416 cut-off events. [2024-06-28 01:45:56,586 INFO L125 PetriNetUnfolderBase]: For 110550/110550 co-relation queries the response was YES. [2024-06-28 01:45:56,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25817 conditions, 3416 events. 2045/3416 cut-off events. For 110550/110550 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20157 event pairs, 502 based on Foata normal form. 2/3374 useless extension candidates. Maximal degree in co-relation 25703. Up to 3011 conditions per place. [2024-06-28 01:45:56,631 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 318 selfloop transitions, 78 changer transitions 0/402 dead transitions. [2024-06-28 01:45:56,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 402 transitions, 6668 flow [2024-06-28 01:45:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:45:56,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 01:45:56,632 INFO L175 Difference]: Start difference. First operand has 250 places, 362 transitions, 5565 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:45:56,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 402 transitions, 6668 flow [2024-06-28 01:45:57,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 402 transitions, 6437 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:57,016 INFO L231 Difference]: Finished difference. Result has 255 places, 367 transitions, 5697 flow [2024-06-28 01:45:57,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5334, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5697, PETRI_PLACES=255, PETRI_TRANSITIONS=367} [2024-06-28 01:45:57,016 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 215 predicate places. [2024-06-28 01:45:57,017 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 367 transitions, 5697 flow [2024-06-28 01:45:57,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:57,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:57,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:57,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:45:57,017 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:57,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1015630895, now seen corresponding path program 1 times [2024-06-28 01:45:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:57,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972558021] [2024-06-28 01:45:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:57,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:57,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972558021] [2024-06-28 01:45:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972558021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:57,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:57,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313849605] [2024-06-28 01:45:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:57,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:57,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:57,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:57,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 367 transitions, 5697 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:57,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:57,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:57,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:58,770 INFO L124 PetriNetUnfolderBase]: 2055/3434 cut-off events. [2024-06-28 01:45:58,771 INFO L125 PetriNetUnfolderBase]: For 114813/114813 co-relation queries the response was YES. [2024-06-28 01:45:58,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26108 conditions, 3434 events. 2055/3434 cut-off events. For 114813/114813 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 20312 event pairs, 490 based on Foata normal form. 1/3391 useless extension candidates. Maximal degree in co-relation 25992. Up to 2971 conditions per place. [2024-06-28 01:45:58,805 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 296 selfloop transitions, 102 changer transitions 0/404 dead transitions. [2024-06-28 01:45:58,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 404 transitions, 6790 flow [2024-06-28 01:45:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:45:58,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:45:58,807 INFO L175 Difference]: Start difference. First operand has 255 places, 367 transitions, 5697 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:45:58,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 404 transitions, 6790 flow [2024-06-28 01:45:59,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 404 transitions, 6551 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:59,113 INFO L231 Difference]: Finished difference. Result has 259 places, 370 transitions, 5826 flow [2024-06-28 01:45:59,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5458, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5826, PETRI_PLACES=259, PETRI_TRANSITIONS=370} [2024-06-28 01:45:59,114 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 219 predicate places. [2024-06-28 01:45:59,114 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 370 transitions, 5826 flow [2024-06-28 01:45:59,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:59,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:59,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:59,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:45:59,115 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:59,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:59,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1015639079, now seen corresponding path program 5 times [2024-06-28 01:45:59,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:59,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914022022] [2024-06-28 01:45:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:59,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:59,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914022022] [2024-06-28 01:45:59,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914022022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:59,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:59,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:59,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353811872] [2024-06-28 01:45:59,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:59,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:59,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:59,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:59,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:59,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:45:59,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 370 transitions, 5826 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:59,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:59,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:45:59,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:00,912 INFO L124 PetriNetUnfolderBase]: 2070/3458 cut-off events. [2024-06-28 01:46:00,912 INFO L125 PetriNetUnfolderBase]: For 120000/120000 co-relation queries the response was YES. [2024-06-28 01:46:00,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26485 conditions, 3458 events. 2070/3458 cut-off events. For 120000/120000 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 20459 event pairs, 493 based on Foata normal form. 2/3416 useless extension candidates. Maximal degree in co-relation 26368. Up to 3018 conditions per place. [2024-06-28 01:46:00,955 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 305 selfloop transitions, 95 changer transitions 0/406 dead transitions. [2024-06-28 01:46:00,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 406 transitions, 6886 flow [2024-06-28 01:46:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:46:00,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:46:00,957 INFO L175 Difference]: Start difference. First operand has 259 places, 370 transitions, 5826 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:46:00,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 406 transitions, 6886 flow [2024-06-28 01:46:01,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 406 transitions, 6604 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:01,310 INFO L231 Difference]: Finished difference. Result has 262 places, 372 transitions, 5854 flow [2024-06-28 01:46:01,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5544, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5854, PETRI_PLACES=262, PETRI_TRANSITIONS=372} [2024-06-28 01:46:01,311 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 222 predicate places. [2024-06-28 01:46:01,311 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 372 transitions, 5854 flow [2024-06-28 01:46:01,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:01,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:01,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:46:01,312 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:01,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash 248893083, now seen corresponding path program 1 times [2024-06-28 01:46:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:01,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356912686] [2024-06-28 01:46:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:02,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:02,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356912686] [2024-06-28 01:46:02,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356912686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:02,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:02,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805707171] [2024-06-28 01:46:02,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:02,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:02,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 372 transitions, 5854 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:02,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:02,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:02,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:02,895 INFO L124 PetriNetUnfolderBase]: 2090/3482 cut-off events. [2024-06-28 01:46:02,895 INFO L125 PetriNetUnfolderBase]: For 124159/124159 co-relation queries the response was YES. [2024-06-28 01:46:02,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26785 conditions, 3482 events. 2090/3482 cut-off events. For 124159/124159 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20607 event pairs, 436 based on Foata normal form. 2/3440 useless extension candidates. Maximal degree in co-relation 26667. Up to 3047 conditions per place. [2024-06-28 01:46:02,934 INFO L140 encePairwiseOnDemand]: 20/36 looper letters, 322 selfloop transitions, 86 changer transitions 0/414 dead transitions. [2024-06-28 01:46:02,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 414 transitions, 6984 flow [2024-06-28 01:46:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:46:02,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:46:02,935 INFO L175 Difference]: Start difference. First operand has 262 places, 372 transitions, 5854 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:46:02,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 414 transitions, 6984 flow [2024-06-28 01:46:03,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 414 transitions, 6700 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:03,277 INFO L231 Difference]: Finished difference. Result has 265 places, 375 transitions, 5883 flow [2024-06-28 01:46:03,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5570, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5883, PETRI_PLACES=265, PETRI_TRANSITIONS=375} [2024-06-28 01:46:03,278 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 225 predicate places. [2024-06-28 01:46:03,278 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 375 transitions, 5883 flow [2024-06-28 01:46:03,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:03,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:03,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:03,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:46:03,279 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:03,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1170063475, now seen corresponding path program 6 times [2024-06-28 01:46:03,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:03,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077428953] [2024-06-28 01:46:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:03,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:04,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077428953] [2024-06-28 01:46:04,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077428953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:04,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:04,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195207764] [2024-06-28 01:46:04,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:04,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:04,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:04,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 375 transitions, 5883 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:04,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:04,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:04,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:05,053 INFO L124 PetriNetUnfolderBase]: 2114/3521 cut-off events. [2024-06-28 01:46:05,053 INFO L125 PetriNetUnfolderBase]: For 129184/129184 co-relation queries the response was YES. [2024-06-28 01:46:05,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27074 conditions, 3521 events. 2114/3521 cut-off events. For 129184/129184 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20825 event pairs, 519 based on Foata normal form. 2/3479 useless extension candidates. Maximal degree in co-relation 26955. Up to 3062 conditions per place. [2024-06-28 01:46:05,095 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 319 selfloop transitions, 90 changer transitions 0/415 dead transitions. [2024-06-28 01:46:05,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 415 transitions, 6989 flow [2024-06-28 01:46:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:46:05,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 01:46:05,096 INFO L175 Difference]: Start difference. First operand has 265 places, 375 transitions, 5883 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:46:05,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 415 transitions, 6989 flow [2024-06-28 01:46:05,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 415 transitions, 6706 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:05,493 INFO L231 Difference]: Finished difference. Result has 266 places, 379 transitions, 5920 flow [2024-06-28 01:46:05,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5600, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5920, PETRI_PLACES=266, PETRI_TRANSITIONS=379} [2024-06-28 01:46:05,493 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 226 predicate places. [2024-06-28 01:46:05,493 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 379 transitions, 5920 flow [2024-06-28 01:46:05,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:05,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:05,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:05,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:46:05,494 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:05,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1143304219, now seen corresponding path program 2 times [2024-06-28 01:46:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:05,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132901170] [2024-06-28 01:46:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:05,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:06,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132901170] [2024-06-28 01:46:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132901170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:06,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:06,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796990948] [2024-06-28 01:46:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:06,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:06,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:06,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 379 transitions, 5920 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:06,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:06,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:06,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:07,240 INFO L124 PetriNetUnfolderBase]: 2122/3533 cut-off events. [2024-06-28 01:46:07,240 INFO L125 PetriNetUnfolderBase]: For 130286/130286 co-relation queries the response was YES. [2024-06-28 01:46:07,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27140 conditions, 3533 events. 2122/3533 cut-off events. For 130286/130286 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20934 event pairs, 516 based on Foata normal form. 1/3490 useless extension candidates. Maximal degree in co-relation 27020. Up to 3054 conditions per place. [2024-06-28 01:46:07,284 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 317 selfloop transitions, 98 changer transitions 0/421 dead transitions. [2024-06-28 01:46:07,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 421 transitions, 7106 flow [2024-06-28 01:46:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:46:07,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:46:07,285 INFO L175 Difference]: Start difference. First operand has 266 places, 379 transitions, 5920 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:46:07,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 421 transitions, 7106 flow [2024-06-28 01:46:07,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 421 transitions, 6873 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:07,649 INFO L231 Difference]: Finished difference. Result has 270 places, 385 transitions, 6101 flow [2024-06-28 01:46:07,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5687, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6101, PETRI_PLACES=270, PETRI_TRANSITIONS=385} [2024-06-28 01:46:07,650 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 230 predicate places. [2024-06-28 01:46:07,650 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 385 transitions, 6101 flow [2024-06-28 01:46:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:07,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:07,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:46:07,651 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:07,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1143309055, now seen corresponding path program 7 times [2024-06-28 01:46:07,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:07,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574830191] [2024-06-28 01:46:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:08,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:08,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574830191] [2024-06-28 01:46:08,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574830191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:08,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:08,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:08,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379490484] [2024-06-28 01:46:08,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:08,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:08,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:08,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:08,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:08,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 385 transitions, 6101 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:08,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:08,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:08,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:09,527 INFO L124 PetriNetUnfolderBase]: 2166/3609 cut-off events. [2024-06-28 01:46:09,528 INFO L125 PetriNetUnfolderBase]: For 138713/138713 co-relation queries the response was YES. [2024-06-28 01:46:09,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27716 conditions, 3609 events. 2166/3609 cut-off events. For 138713/138713 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21526 event pairs, 545 based on Foata normal form. 2/3567 useless extension candidates. Maximal degree in co-relation 27595. Up to 3187 conditions per place. [2024-06-28 01:46:09,569 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 347 selfloop transitions, 74 changer transitions 0/427 dead transitions. [2024-06-28 01:46:09,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 427 transitions, 7251 flow [2024-06-28 01:46:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:46:09,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 01:46:09,571 INFO L175 Difference]: Start difference. First operand has 270 places, 385 transitions, 6101 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:46:09,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 427 transitions, 7251 flow [2024-06-28 01:46:10,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 427 transitions, 6925 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:10,063 INFO L231 Difference]: Finished difference. Result has 272 places, 391 transitions, 6094 flow [2024-06-28 01:46:10,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5775, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6094, PETRI_PLACES=272, PETRI_TRANSITIONS=391} [2024-06-28 01:46:10,072 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 232 predicate places. [2024-06-28 01:46:10,072 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 391 transitions, 6094 flow [2024-06-28 01:46:10,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:10,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:10,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:10,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:46:10,073 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:10,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1055538941, now seen corresponding path program 2 times [2024-06-28 01:46:10,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:10,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275230175] [2024-06-28 01:46:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:10,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275230175] [2024-06-28 01:46:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275230175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:11,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:11,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:11,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94434495] [2024-06-28 01:46:11,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:11,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:11,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:11,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:11,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:11,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 391 transitions, 6094 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:11,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:11,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:11,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:12,150 INFO L124 PetriNetUnfolderBase]: 2198/3657 cut-off events. [2024-06-28 01:46:12,151 INFO L125 PetriNetUnfolderBase]: For 141153/141153 co-relation queries the response was YES. [2024-06-28 01:46:12,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28057 conditions, 3657 events. 2198/3657 cut-off events. For 141153/141153 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 21848 event pairs, 553 based on Foata normal form. 2/3615 useless extension candidates. Maximal degree in co-relation 27934. Up to 3214 conditions per place. [2024-06-28 01:46:12,196 INFO L140 encePairwiseOnDemand]: 20/36 looper letters, 345 selfloop transitions, 85 changer transitions 0/436 dead transitions. [2024-06-28 01:46:12,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 436 transitions, 7302 flow [2024-06-28 01:46:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:46:12,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:46:12,198 INFO L175 Difference]: Start difference. First operand has 272 places, 391 transitions, 6094 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:46:12,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 436 transitions, 7302 flow [2024-06-28 01:46:12,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 436 transitions, 7083 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:12,701 INFO L231 Difference]: Finished difference. Result has 277 places, 397 transitions, 6227 flow [2024-06-28 01:46:12,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5875, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6227, PETRI_PLACES=277, PETRI_TRANSITIONS=397} [2024-06-28 01:46:12,702 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-28 01:46:12,702 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 397 transitions, 6227 flow [2024-06-28 01:46:12,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:12,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:12,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:12,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:46:12,702 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:12,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash -924086569, now seen corresponding path program 8 times [2024-06-28 01:46:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738361803] [2024-06-28 01:46:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:13,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:13,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738361803] [2024-06-28 01:46:13,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738361803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:13,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:13,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:13,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382797296] [2024-06-28 01:46:13,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:13,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:13,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:13,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:13,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:13,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:13,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 397 transitions, 6227 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:13,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:13,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:13,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:14,531 INFO L124 PetriNetUnfolderBase]: 2213/3686 cut-off events. [2024-06-28 01:46:14,531 INFO L125 PetriNetUnfolderBase]: For 145995/145995 co-relation queries the response was YES. [2024-06-28 01:46:14,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28401 conditions, 3686 events. 2213/3686 cut-off events. For 145995/145995 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 22168 event pairs, 676 based on Foata normal form. 2/3644 useless extension candidates. Maximal degree in co-relation 28277. Up to 3448 conditions per place. [2024-06-28 01:46:14,583 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 397 selfloop transitions, 27 changer transitions 0/430 dead transitions. [2024-06-28 01:46:14,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 430 transitions, 7353 flow [2024-06-28 01:46:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:46:14,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 01:46:14,585 INFO L175 Difference]: Start difference. First operand has 277 places, 397 transitions, 6227 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:46:14,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 430 transitions, 7353 flow [2024-06-28 01:46:15,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 430 transitions, 7043 flow, removed 62 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:15,098 INFO L231 Difference]: Finished difference. Result has 277 places, 399 transitions, 6104 flow [2024-06-28 01:46:15,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5917, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6104, PETRI_PLACES=277, PETRI_TRANSITIONS=399} [2024-06-28 01:46:15,098 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-28 01:46:15,098 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 399 transitions, 6104 flow [2024-06-28 01:46:15,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:15,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:15,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:15,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:46:15,099 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:15,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:15,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1742518227, now seen corresponding path program 3 times [2024-06-28 01:46:15,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:15,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440650316] [2024-06-28 01:46:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:15,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:15,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440650316] [2024-06-28 01:46:15,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440650316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:15,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:15,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210401407] [2024-06-28 01:46:15,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:15,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:15,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:15,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:15,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 399 transitions, 6104 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:15,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:15,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:15,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:16,748 INFO L124 PetriNetUnfolderBase]: 2233/3716 cut-off events. [2024-06-28 01:46:16,749 INFO L125 PetriNetUnfolderBase]: For 147151/147151 co-relation queries the response was YES. [2024-06-28 01:46:16,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28448 conditions, 3716 events. 2233/3716 cut-off events. For 147151/147151 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 22358 event pairs, 653 based on Foata normal form. 2/3674 useless extension candidates. Maximal degree in co-relation 28323. Up to 3370 conditions per place. [2024-06-28 01:46:16,797 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 392 selfloop transitions, 42 changer transitions 0/440 dead transitions. [2024-06-28 01:46:16,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 440 transitions, 7385 flow [2024-06-28 01:46:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:46:16,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 01:46:16,799 INFO L175 Difference]: Start difference. First operand has 277 places, 399 transitions, 6104 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:46:16,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 440 transitions, 7385 flow [2024-06-28 01:46:17,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 440 transitions, 7209 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:17,343 INFO L231 Difference]: Finished difference. Result has 280 places, 402 transitions, 6123 flow [2024-06-28 01:46:17,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5928, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6123, PETRI_PLACES=280, PETRI_TRANSITIONS=402} [2024-06-28 01:46:17,344 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 240 predicate places. [2024-06-28 01:46:17,344 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 402 transitions, 6123 flow [2024-06-28 01:46:17,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:17,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:17,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:17,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:46:17,345 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:17,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:17,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1742278907, now seen corresponding path program 1 times [2024-06-28 01:46:17,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:17,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469418686] [2024-06-28 01:46:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:17,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:17,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:17,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469418686] [2024-06-28 01:46:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469418686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:17,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:17,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:17,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517913160] [2024-06-28 01:46:17,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:17,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:17,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:17,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:18,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:18,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 402 transitions, 6123 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:18,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:18,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:18,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:19,021 INFO L124 PetriNetUnfolderBase]: 2248/3747 cut-off events. [2024-06-28 01:46:19,021 INFO L125 PetriNetUnfolderBase]: For 148110/148110 co-relation queries the response was YES. [2024-06-28 01:46:19,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28585 conditions, 3747 events. 2248/3747 cut-off events. For 148110/148110 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22556 event pairs, 689 based on Foata normal form. 2/3703 useless extension candidates. Maximal degree in co-relation 28459. Up to 3503 conditions per place. [2024-06-28 01:46:19,067 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 399 selfloop transitions, 29 changer transitions 0/434 dead transitions. [2024-06-28 01:46:19,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 434 transitions, 7241 flow [2024-06-28 01:46:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:46:19,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 01:46:19,069 INFO L175 Difference]: Start difference. First operand has 280 places, 402 transitions, 6123 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:46:19,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 434 transitions, 7241 flow [2024-06-28 01:46:19,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 434 transitions, 7085 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:19,586 INFO L231 Difference]: Finished difference. Result has 281 places, 404 transitions, 6146 flow [2024-06-28 01:46:19,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5967, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6146, PETRI_PLACES=281, PETRI_TRANSITIONS=404} [2024-06-28 01:46:19,587 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 241 predicate places. [2024-06-28 01:46:19,587 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 404 transitions, 6146 flow [2024-06-28 01:46:19,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:19,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:19,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:19,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:46:19,588 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:19,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:19,588 INFO L85 PathProgramCache]: Analyzing trace with hash -481497083, now seen corresponding path program 9 times [2024-06-28 01:46:19,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:19,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500994837] [2024-06-28 01:46:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:19,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500994837] [2024-06-28 01:46:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500994837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:20,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:20,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827302976] [2024-06-28 01:46:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:20,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:20,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:20,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:20,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:20,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 404 transitions, 6146 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:20,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:20,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:20,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:21,441 INFO L124 PetriNetUnfolderBase]: 2263/3762 cut-off events. [2024-06-28 01:46:21,441 INFO L125 PetriNetUnfolderBase]: For 154694/154694 co-relation queries the response was YES. [2024-06-28 01:46:21,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28816 conditions, 3762 events. 2263/3762 cut-off events. For 154694/154694 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 22523 event pairs, 522 based on Foata normal form. 2/3719 useless extension candidates. Maximal degree in co-relation 28689. Up to 3303 conditions per place. [2024-06-28 01:46:21,508 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 349 selfloop transitions, 87 changer transitions 0/442 dead transitions. [2024-06-28 01:46:21,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 442 transitions, 7326 flow [2024-06-28 01:46:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:46:21,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 01:46:21,510 INFO L175 Difference]: Start difference. First operand has 281 places, 404 transitions, 6146 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:46:21,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 442 transitions, 7326 flow [2024-06-28 01:46:22,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 442 transitions, 7163 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:22,337 INFO L231 Difference]: Finished difference. Result has 283 places, 406 transitions, 6296 flow [2024-06-28 01:46:22,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5983, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6296, PETRI_PLACES=283, PETRI_TRANSITIONS=406} [2024-06-28 01:46:22,338 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 243 predicate places. [2024-06-28 01:46:22,338 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 406 transitions, 6296 flow [2024-06-28 01:46:22,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:22,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:22,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:22,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:46:22,338 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:22,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash -481501733, now seen corresponding path program 10 times [2024-06-28 01:46:22,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:22,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733728218] [2024-06-28 01:46:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:22,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:23,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733728218] [2024-06-28 01:46:23,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733728218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:23,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:23,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839678783] [2024-06-28 01:46:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:23,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:23,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:23,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:23,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:23,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 406 transitions, 6296 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:23,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:23,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:23,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:24,202 INFO L124 PetriNetUnfolderBase]: 2278/3787 cut-off events. [2024-06-28 01:46:24,202 INFO L125 PetriNetUnfolderBase]: For 162109/162109 co-relation queries the response was YES. [2024-06-28 01:46:24,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29304 conditions, 3787 events. 2278/3787 cut-off events. For 162109/162109 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 22731 event pairs, 526 based on Foata normal form. 2/3744 useless extension candidates. Maximal degree in co-relation 29176. Up to 3328 conditions per place. [2024-06-28 01:46:24,249 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 353 selfloop transitions, 85 changer transitions 0/444 dead transitions. [2024-06-28 01:46:24,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 444 transitions, 7482 flow [2024-06-28 01:46:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:46:24,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 01:46:24,250 INFO L175 Difference]: Start difference. First operand has 283 places, 406 transitions, 6296 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:46:24,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 444 transitions, 7482 flow [2024-06-28 01:46:24,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 444 transitions, 7185 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:24,786 INFO L231 Difference]: Finished difference. Result has 285 places, 408 transitions, 6312 flow [2024-06-28 01:46:24,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5999, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6312, PETRI_PLACES=285, PETRI_TRANSITIONS=408} [2024-06-28 01:46:24,786 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 245 predicate places. [2024-06-28 01:46:24,787 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 408 transitions, 6312 flow [2024-06-28 01:46:24,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:24,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:24,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:24,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:46:24,787 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:24,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1742287587, now seen corresponding path program 4 times [2024-06-28 01:46:24,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:24,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839060261] [2024-06-28 01:46:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:24,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:25,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:25,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839060261] [2024-06-28 01:46:25,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839060261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:25,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:25,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:25,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836422220] [2024-06-28 01:46:25,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:25,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:25,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:25,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:25,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:25,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 408 transitions, 6312 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:25,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:25,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:25,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:26,630 INFO L124 PetriNetUnfolderBase]: 2274/3785 cut-off events. [2024-06-28 01:46:26,630 INFO L125 PetriNetUnfolderBase]: For 158609/158609 co-relation queries the response was YES. [2024-06-28 01:46:26,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28991 conditions, 3785 events. 2274/3785 cut-off events. For 158609/158609 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22869 event pairs, 668 based on Foata normal form. 2/3743 useless extension candidates. Maximal degree in co-relation 28862. Up to 3442 conditions per place. [2024-06-28 01:46:26,676 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 398 selfloop transitions, 41 changer transitions 0/445 dead transitions. [2024-06-28 01:46:26,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 445 transitions, 7380 flow [2024-06-28 01:46:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:46:26,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:46:26,678 INFO L175 Difference]: Start difference. First operand has 285 places, 408 transitions, 6312 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:46:26,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 445 transitions, 7380 flow [2024-06-28 01:46:27,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 445 transitions, 7017 flow, removed 98 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:27,240 INFO L231 Difference]: Finished difference. Result has 288 places, 408 transitions, 6037 flow [2024-06-28 01:46:27,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5949, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6037, PETRI_PLACES=288, PETRI_TRANSITIONS=408} [2024-06-28 01:46:27,240 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-28 01:46:27,241 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 408 transitions, 6037 flow [2024-06-28 01:46:27,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:27,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:27,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:27,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:46:27,241 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:27,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:27,242 INFO L85 PathProgramCache]: Analyzing trace with hash -481317159, now seen corresponding path program 5 times [2024-06-28 01:46:27,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:27,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594511274] [2024-06-28 01:46:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:27,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:28,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:28,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594511274] [2024-06-28 01:46:28,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594511274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:28,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:28,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:28,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103097825] [2024-06-28 01:46:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:28,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:28,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:28,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:28,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:28,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 408 transitions, 6037 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:28,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:28,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:28,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:29,175 INFO L124 PetriNetUnfolderBase]: 2284/3796 cut-off events. [2024-06-28 01:46:29,176 INFO L125 PetriNetUnfolderBase]: For 156004/156004 co-relation queries the response was YES. [2024-06-28 01:46:29,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28750 conditions, 3796 events. 2284/3796 cut-off events. For 156004/156004 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22766 event pairs, 529 based on Foata normal form. 2/3753 useless extension candidates. Maximal degree in co-relation 28620. Up to 3309 conditions per place. [2024-06-28 01:46:29,221 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 355 selfloop transitions, 91 changer transitions 0/452 dead transitions. [2024-06-28 01:46:29,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 452 transitions, 7295 flow [2024-06-28 01:46:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:46:29,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 01:46:29,223 INFO L175 Difference]: Start difference. First operand has 288 places, 408 transitions, 6037 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:46:29,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 452 transitions, 7295 flow [2024-06-28 01:46:29,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 452 transitions, 7183 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 01:46:29,739 INFO L231 Difference]: Finished difference. Result has 288 places, 411 transitions, 6275 flow [2024-06-28 01:46:29,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5925, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6275, PETRI_PLACES=288, PETRI_TRANSITIONS=411} [2024-06-28 01:46:29,739 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-28 01:46:29,739 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 411 transitions, 6275 flow [2024-06-28 01:46:29,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:29,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:29,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:29,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:46:29,740 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:29,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash 350837647, now seen corresponding path program 11 times [2024-06-28 01:46:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20409163] [2024-06-28 01:46:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:29,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:30,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:30,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20409163] [2024-06-28 01:46:30,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20409163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:30,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:30,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412175445] [2024-06-28 01:46:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:30,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:30,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:30,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:30,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:30,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:30,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 411 transitions, 6275 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:30,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:30,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:30,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:31,636 INFO L124 PetriNetUnfolderBase]: 2299/3823 cut-off events. [2024-06-28 01:46:31,636 INFO L125 PetriNetUnfolderBase]: For 166471/166471 co-relation queries the response was YES. [2024-06-28 01:46:31,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29335 conditions, 3823 events. 2299/3823 cut-off events. For 166471/166471 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 23051 event pairs, 503 based on Foata normal form. 2/3781 useless extension candidates. Maximal degree in co-relation 29204. Up to 3180 conditions per place. [2024-06-28 01:46:31,688 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 351 selfloop transitions, 86 changer transitions 0/443 dead transitions. [2024-06-28 01:46:31,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 443 transitions, 7417 flow [2024-06-28 01:46:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 01:46:31,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:46:31,690 INFO L175 Difference]: Start difference. First operand has 288 places, 411 transitions, 6275 flow. Second operand 9 states and 144 transitions. [2024-06-28 01:46:31,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 443 transitions, 7417 flow [2024-06-28 01:46:32,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 443 transitions, 7095 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:32,345 INFO L231 Difference]: Finished difference. Result has 288 places, 413 transitions, 6292 flow [2024-06-28 01:46:32,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5953, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6292, PETRI_PLACES=288, PETRI_TRANSITIONS=413} [2024-06-28 01:46:32,346 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-28 01:46:32,346 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 413 transitions, 6292 flow [2024-06-28 01:46:32,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:32,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:32,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:32,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:46:32,347 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:32,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1866455535, now seen corresponding path program 12 times [2024-06-28 01:46:32,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:32,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615829936] [2024-06-28 01:46:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:32,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:33,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615829936] [2024-06-28 01:46:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615829936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:33,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774331928] [2024-06-28 01:46:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:33,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:33,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:33,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:33,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 413 transitions, 6292 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:33,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:33,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:33,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:34,135 INFO L124 PetriNetUnfolderBase]: 2314/3851 cut-off events. [2024-06-28 01:46:34,136 INFO L125 PetriNetUnfolderBase]: For 170532/170532 co-relation queries the response was YES. [2024-06-28 01:46:34,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29692 conditions, 3851 events. 2314/3851 cut-off events. For 170532/170532 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23304 event pairs, 515 based on Foata normal form. 2/3809 useless extension candidates. Maximal degree in co-relation 29560. Up to 3250 conditions per place. [2024-06-28 01:46:34,185 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 347 selfloop transitions, 93 changer transitions 0/446 dead transitions. [2024-06-28 01:46:34,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 446 transitions, 7460 flow [2024-06-28 01:46:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:46:34,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-28 01:46:34,187 INFO L175 Difference]: Start difference. First operand has 288 places, 413 transitions, 6292 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:46:34,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 446 transitions, 7460 flow [2024-06-28 01:46:34,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 446 transitions, 7155 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:34,938 INFO L231 Difference]: Finished difference. Result has 290 places, 415 transitions, 6335 flow [2024-06-28 01:46:34,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5999, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6335, PETRI_PLACES=290, PETRI_TRANSITIONS=415} [2024-06-28 01:46:34,938 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 250 predicate places. [2024-06-28 01:46:34,938 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 415 transitions, 6335 flow [2024-06-28 01:46:34,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:34,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:34,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:34,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:46:34,939 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:34,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash 432014883, now seen corresponding path program 13 times [2024-06-28 01:46:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:34,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857886160] [2024-06-28 01:46:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857886160] [2024-06-28 01:46:35,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857886160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:35,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:35,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036158361] [2024-06-28 01:46:35,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:35,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:35,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:35,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:35,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:35,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 415 transitions, 6335 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:35,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:35,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:35,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:36,919 INFO L124 PetriNetUnfolderBase]: 2329/3878 cut-off events. [2024-06-28 01:46:36,919 INFO L125 PetriNetUnfolderBase]: For 161552/161552 co-relation queries the response was YES. [2024-06-28 01:46:36,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 3878 events. 2329/3878 cut-off events. For 161552/161552 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23562 event pairs, 519 based on Foata normal form. 2/3836 useless extension candidates. Maximal degree in co-relation 29504. Up to 3194 conditions per place. [2024-06-28 01:46:36,971 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 316 selfloop transitions, 129 changer transitions 0/451 dead transitions. [2024-06-28 01:46:36,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 451 transitions, 7690 flow [2024-06-28 01:46:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:46:36,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-28 01:46:36,973 INFO L175 Difference]: Start difference. First operand has 290 places, 415 transitions, 6335 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:46:36,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 451 transitions, 7690 flow [2024-06-28 01:46:37,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 451 transitions, 7368 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:37,655 INFO L231 Difference]: Finished difference. Result has 293 places, 420 transitions, 6675 flow [2024-06-28 01:46:37,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6029, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6675, PETRI_PLACES=293, PETRI_TRANSITIONS=420} [2024-06-28 01:46:37,656 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 253 predicate places. [2024-06-28 01:46:37,656 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 420 transitions, 6675 flow [2024-06-28 01:46:37,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:37,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:37,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:37,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:46:37,656 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:37,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:37,657 INFO L85 PathProgramCache]: Analyzing trace with hash -344337217, now seen corresponding path program 3 times [2024-06-28 01:46:37,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:37,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994280973] [2024-06-28 01:46:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:37,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:38,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:38,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994280973] [2024-06-28 01:46:38,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994280973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:38,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:38,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:38,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411284669] [2024-06-28 01:46:38,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:38,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:38,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:38,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:38,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:38,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 420 transitions, 6675 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:38,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:38,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:38,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:39,483 INFO L124 PetriNetUnfolderBase]: 2340/3898 cut-off events. [2024-06-28 01:46:39,483 INFO L125 PetriNetUnfolderBase]: For 151797/151797 co-relation queries the response was YES. [2024-06-28 01:46:39,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29792 conditions, 3898 events. 2340/3898 cut-off events. For 151797/151797 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23709 event pairs, 504 based on Foata normal form. 1/3855 useless extension candidates. Maximal degree in co-relation 29657. Up to 3208 conditions per place. [2024-06-28 01:46:39,524 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 325 selfloop transitions, 141 changer transitions 0/472 dead transitions. [2024-06-28 01:46:39,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 472 transitions, 8262 flow [2024-06-28 01:46:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:46:39,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:46:39,525 INFO L175 Difference]: Start difference. First operand has 293 places, 420 transitions, 6675 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:46:39,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 472 transitions, 8262 flow [2024-06-28 01:46:40,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 472 transitions, 7888 flow, removed 129 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:40,172 INFO L231 Difference]: Finished difference. Result has 299 places, 441 transitions, 7254 flow [2024-06-28 01:46:40,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6307, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7254, PETRI_PLACES=299, PETRI_TRANSITIONS=441} [2024-06-28 01:46:40,173 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-28 01:46:40,173 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 441 transitions, 7254 flow [2024-06-28 01:46:40,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:40,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:40,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:40,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:46:40,174 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:40,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash 519780347, now seen corresponding path program 6 times [2024-06-28 01:46:40,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:40,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215609957] [2024-06-28 01:46:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:41,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:41,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215609957] [2024-06-28 01:46:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215609957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:41,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:41,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:41,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507755340] [2024-06-28 01:46:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:41,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:41,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:41,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:41,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 441 transitions, 7254 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:41,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:41,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:41,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:42,509 INFO L124 PetriNetUnfolderBase]: 2360/3921 cut-off events. [2024-06-28 01:46:42,510 INFO L125 PetriNetUnfolderBase]: For 156686/156686 co-relation queries the response was YES. [2024-06-28 01:46:42,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30737 conditions, 3921 events. 2360/3921 cut-off events. For 156686/156686 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 23841 event pairs, 460 based on Foata normal form. 2/3879 useless extension candidates. Maximal degree in co-relation 30598. Up to 3275 conditions per place. [2024-06-28 01:46:42,560 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 361 selfloop transitions, 113 changer transitions 0/480 dead transitions. [2024-06-28 01:46:42,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 480 transitions, 8534 flow [2024-06-28 01:46:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:46:42,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:46:42,562 INFO L175 Difference]: Start difference. First operand has 299 places, 441 transitions, 7254 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:46:42,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 480 transitions, 8534 flow [2024-06-28 01:46:43,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 480 transitions, 8234 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:43,371 INFO L231 Difference]: Finished difference. Result has 304 places, 444 transitions, 7358 flow [2024-06-28 01:46:43,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6954, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7358, PETRI_PLACES=304, PETRI_TRANSITIONS=444} [2024-06-28 01:46:43,372 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 264 predicate places. [2024-06-28 01:46:43,372 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 444 transitions, 7358 flow [2024-06-28 01:46:43,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:43,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:43,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:43,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:46:43,372 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:43,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash -167205883, now seen corresponding path program 14 times [2024-06-28 01:46:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648720730] [2024-06-28 01:46:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:43,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:44,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:44,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648720730] [2024-06-28 01:46:44,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648720730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:44,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:44,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:44,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253882550] [2024-06-28 01:46:44,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:44,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:44,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:44,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:44,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:44,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 444 transitions, 7358 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:44,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:44,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:44,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:45,201 INFO L124 PetriNetUnfolderBase]: 2375/3948 cut-off events. [2024-06-28 01:46:45,202 INFO L125 PetriNetUnfolderBase]: For 166498/166498 co-relation queries the response was YES. [2024-06-28 01:46:45,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31233 conditions, 3948 events. 2375/3948 cut-off events. For 166498/166498 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24033 event pairs, 654 based on Foata normal form. 2/3906 useless extension candidates. Maximal degree in co-relation 31093. Up to 3657 conditions per place. [2024-06-28 01:46:45,252 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 433 selfloop transitions, 35 changer transitions 0/474 dead transitions. [2024-06-28 01:46:45,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 474 transitions, 8576 flow [2024-06-28 01:46:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 01:46:45,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-28 01:46:45,254 INFO L175 Difference]: Start difference. First operand has 304 places, 444 transitions, 7358 flow. Second operand 9 states and 143 transitions. [2024-06-28 01:46:45,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 474 transitions, 8576 flow [2024-06-28 01:46:45,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 474 transitions, 8226 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:45,976 INFO L231 Difference]: Finished difference. Result has 305 places, 446 transitions, 7226 flow [2024-06-28 01:46:45,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7008, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7226, PETRI_PLACES=305, PETRI_TRANSITIONS=446} [2024-06-28 01:46:45,977 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 265 predicate places. [2024-06-28 01:46:45,977 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 446 transitions, 7226 flow [2024-06-28 01:46:45,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:45,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:45,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:45,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:46:45,977 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:45,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash -166959619, now seen corresponding path program 2 times [2024-06-28 01:46:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:45,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191526883] [2024-06-28 01:46:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:45,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:46,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:46,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191526883] [2024-06-28 01:46:46,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191526883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:46,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:46,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351675473] [2024-06-28 01:46:46,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:46,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:46,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:46,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:46,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:46,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 446 transitions, 7226 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:46,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:46,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:46,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:48,000 INFO L124 PetriNetUnfolderBase]: 2390/3973 cut-off events. [2024-06-28 01:46:48,000 INFO L125 PetriNetUnfolderBase]: For 169308/169308 co-relation queries the response was YES. [2024-06-28 01:46:48,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31144 conditions, 3973 events. 2390/3973 cut-off events. For 169308/169308 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 24246 event pairs, 665 based on Foata normal form. 2/3931 useless extension candidates. Maximal degree in co-relation 31003. Up to 3682 conditions per place. [2024-06-28 01:46:48,053 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 432 selfloop transitions, 41 changer transitions 0/479 dead transitions. [2024-06-28 01:46:48,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 479 transitions, 8464 flow [2024-06-28 01:46:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:46:48,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 01:46:48,054 INFO L175 Difference]: Start difference. First operand has 305 places, 446 transitions, 7226 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:46:48,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 479 transitions, 8464 flow [2024-06-28 01:46:48,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 479 transitions, 8264 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:48,723 INFO L231 Difference]: Finished difference. Result has 308 places, 448 transitions, 7244 flow [2024-06-28 01:46:48,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7028, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7244, PETRI_PLACES=308, PETRI_TRANSITIONS=448} [2024-06-28 01:46:48,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 268 predicate places. [2024-06-28 01:46:48,724 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 448 transitions, 7244 flow [2024-06-28 01:46:48,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:48,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:48,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:48,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:46:48,725 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:48,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash -167198939, now seen corresponding path program 7 times [2024-06-28 01:46:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:48,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630922448] [2024-06-28 01:46:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:48,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:49,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:49,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630922448] [2024-06-28 01:46:49,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630922448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:49,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:49,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:49,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592523442] [2024-06-28 01:46:49,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:49,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:49,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:49,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:49,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:49,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:49,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 448 transitions, 7244 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:49,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:49,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:49,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:50,724 INFO L124 PetriNetUnfolderBase]: 2410/4003 cut-off events. [2024-06-28 01:46:50,725 INFO L125 PetriNetUnfolderBase]: For 166047/166047 co-relation queries the response was YES. [2024-06-28 01:46:50,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31176 conditions, 4003 events. 2410/4003 cut-off events. For 166047/166047 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 24481 event pairs, 621 based on Foata normal form. 2/3961 useless extension candidates. Maximal degree in co-relation 31034. Up to 3499 conditions per place. [2024-06-28 01:46:50,777 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 415 selfloop transitions, 65 changer transitions 0/486 dead transitions. [2024-06-28 01:46:50,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 486 transitions, 8625 flow [2024-06-28 01:46:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:46:50,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-28 01:46:50,779 INFO L175 Difference]: Start difference. First operand has 308 places, 448 transitions, 7244 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:46:50,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 486 transitions, 8625 flow [2024-06-28 01:46:51,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 486 transitions, 8427 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:51,550 INFO L231 Difference]: Finished difference. Result has 310 places, 451 transitions, 7295 flow [2024-06-28 01:46:51,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7048, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7295, PETRI_PLACES=310, PETRI_TRANSITIONS=451} [2024-06-28 01:46:51,551 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 270 predicate places. [2024-06-28 01:46:51,551 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 451 transitions, 7295 flow [2024-06-28 01:46:51,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:51,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:51,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:51,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:46:51,551 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:51,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash -166968299, now seen corresponding path program 8 times [2024-06-28 01:46:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:51,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449132766] [2024-06-28 01:46:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:52,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:52,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449132766] [2024-06-28 01:46:52,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449132766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:52,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:52,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448401679] [2024-06-28 01:46:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:52,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:52,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:52,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 451 transitions, 7295 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:52,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:52,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:52,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:53,694 INFO L124 PetriNetUnfolderBase]: 2406/3997 cut-off events. [2024-06-28 01:46:53,695 INFO L125 PetriNetUnfolderBase]: For 157176/157176 co-relation queries the response was YES. [2024-06-28 01:46:53,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30940 conditions, 3997 events. 2406/3997 cut-off events. For 157176/157176 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 24414 event pairs, 621 based on Foata normal form. 2/3955 useless extension candidates. Maximal degree in co-relation 30797. Up to 3496 conditions per place. [2024-06-28 01:46:53,738 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 416 selfloop transitions, 63 changer transitions 0/485 dead transitions. [2024-06-28 01:46:53,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 485 transitions, 8435 flow [2024-06-28 01:46:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:46:53,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:46:53,740 INFO L175 Difference]: Start difference. First operand has 310 places, 451 transitions, 7295 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:46:53,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 485 transitions, 8435 flow [2024-06-28 01:46:54,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 485 transitions, 8141 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:54,386 INFO L231 Difference]: Finished difference. Result has 311 places, 451 transitions, 7137 flow [2024-06-28 01:46:54,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7001, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7137, PETRI_PLACES=311, PETRI_TRANSITIONS=451} [2024-06-28 01:46:54,387 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 271 predicate places. [2024-06-28 01:46:54,387 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 451 transitions, 7137 flow [2024-06-28 01:46:54,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:54,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:54,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:54,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:46:54,387 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:54,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash -173634973, now seen corresponding path program 15 times [2024-06-28 01:46:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:54,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434495535] [2024-06-28 01:46:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:55,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:55,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434495535] [2024-06-28 01:46:55,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434495535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:55,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:55,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:55,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196751048] [2024-06-28 01:46:55,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:55,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:55,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:55,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:55,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:55,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 451 transitions, 7137 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:55,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:55,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:55,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:56,341 INFO L124 PetriNetUnfolderBase]: 2421/4019 cut-off events. [2024-06-28 01:46:56,342 INFO L125 PetriNetUnfolderBase]: For 159306/159306 co-relation queries the response was YES. [2024-06-28 01:46:56,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31010 conditions, 4019 events. 2421/4019 cut-off events. For 159306/159306 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 24458 event pairs, 439 based on Foata normal form. 2/3976 useless extension candidates. Maximal degree in co-relation 30867. Up to 3460 conditions per place. [2024-06-28 01:46:56,395 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 376 selfloop transitions, 102 changer transitions 0/484 dead transitions. [2024-06-28 01:46:56,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 484 transitions, 8387 flow [2024-06-28 01:46:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:46:56,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-28 01:46:56,405 INFO L175 Difference]: Start difference. First operand has 311 places, 451 transitions, 7137 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:46:56,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 484 transitions, 8387 flow [2024-06-28 01:46:57,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 484 transitions, 8201 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 01:46:57,080 INFO L231 Difference]: Finished difference. Result has 309 places, 453 transitions, 7303 flow [2024-06-28 01:46:57,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6951, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7303, PETRI_PLACES=309, PETRI_TRANSITIONS=453} [2024-06-28 01:46:57,080 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 269 predicate places. [2024-06-28 01:46:57,080 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 453 transitions, 7303 flow [2024-06-28 01:46:57,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:57,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:57,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:57,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:46:57,081 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:57,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -173639623, now seen corresponding path program 16 times [2024-06-28 01:46:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:57,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831082559] [2024-06-28 01:46:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:57,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:57,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:57,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831082559] [2024-06-28 01:46:57,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831082559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:57,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:57,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:57,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721520854] [2024-06-28 01:46:57,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:57,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:57,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:57,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:57,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:58,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:46:58,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 453 transitions, 7303 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:58,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:58,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:46:58,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:59,052 INFO L124 PetriNetUnfolderBase]: 2436/4043 cut-off events. [2024-06-28 01:46:59,052 INFO L125 PetriNetUnfolderBase]: For 167091/167091 co-relation queries the response was YES. [2024-06-28 01:46:59,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31463 conditions, 4043 events. 2436/4043 cut-off events. For 167091/167091 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 24723 event pairs, 434 based on Foata normal form. 2/4000 useless extension candidates. Maximal degree in co-relation 31320. Up to 3485 conditions per place. [2024-06-28 01:46:59,107 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 382 selfloop transitions, 98 changer transitions 0/486 dead transitions. [2024-06-28 01:46:59,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 486 transitions, 8559 flow [2024-06-28 01:46:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:46:59,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-28 01:46:59,109 INFO L175 Difference]: Start difference. First operand has 309 places, 453 transitions, 7303 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:46:59,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 486 transitions, 8559 flow [2024-06-28 01:46:59,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 486 transitions, 8223 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:59,765 INFO L231 Difference]: Finished difference. Result has 311 places, 455 transitions, 7315 flow [2024-06-28 01:46:59,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6971, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7315, PETRI_PLACES=311, PETRI_TRANSITIONS=455} [2024-06-28 01:46:59,765 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 271 predicate places. [2024-06-28 01:46:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 455 transitions, 7315 flow [2024-06-28 01:46:59,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:59,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:59,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:46:59,766 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:59,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash -173455049, now seen corresponding path program 9 times [2024-06-28 01:46:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001685341] [2024-06-28 01:46:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:00,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:00,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001685341] [2024-06-28 01:47:00,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001685341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:00,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:00,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:47:00,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75615737] [2024-06-28 01:47:00,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:00,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:47:00,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:00,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:47:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:47:00,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:00,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 455 transitions, 7315 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:00,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:00,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:00,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:01,529 INFO L124 PetriNetUnfolderBase]: 2537/4253 cut-off events. [2024-06-28 01:47:01,529 INFO L125 PetriNetUnfolderBase]: For 194432/194432 co-relation queries the response was YES. [2024-06-28 01:47:01,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33889 conditions, 4253 events. 2537/4253 cut-off events. For 194432/194432 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 26466 event pairs, 500 based on Foata normal form. 2/4193 useless extension candidates. Maximal degree in co-relation 33745. Up to 2608 conditions per place. [2024-06-28 01:47:01,581 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 337 selfloop transitions, 160 changer transitions 0/503 dead transitions. [2024-06-28 01:47:01,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 503 transitions, 9277 flow [2024-06-28 01:47:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:47:01,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:47:01,583 INFO L175 Difference]: Start difference. First operand has 311 places, 455 transitions, 7315 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:47:01,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 503 transitions, 9277 flow [2024-06-28 01:47:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 503 transitions, 8941 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:02,249 INFO L231 Difference]: Finished difference. Result has 315 places, 464 transitions, 7835 flow [2024-06-28 01:47:02,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6991, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7835, PETRI_PLACES=315, PETRI_TRANSITIONS=464} [2024-06-28 01:47:02,249 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 275 predicate places. [2024-06-28 01:47:02,250 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 464 transitions, 7835 flow [2024-06-28 01:47:02,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:02,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:02,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:47:02,251 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:02,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1340872713, now seen corresponding path program 3 times [2024-06-28 01:47:02,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139208321] [2024-06-28 01:47:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:03,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:03,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139208321] [2024-06-28 01:47:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139208321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:03,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117749066] [2024-06-28 01:47:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:03,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:03,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 464 transitions, 7835 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:03,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:03,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:03,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:04,505 INFO L124 PetriNetUnfolderBase]: 2552/4287 cut-off events. [2024-06-28 01:47:04,505 INFO L125 PetriNetUnfolderBase]: For 201895/201895 co-relation queries the response was YES. [2024-06-28 01:47:04,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35048 conditions, 4287 events. 2552/4287 cut-off events. For 201895/201895 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26780 event pairs, 863 based on Foata normal form. 2/4227 useless extension candidates. Maximal degree in co-relation 34901. Up to 3990 conditions per place. [2024-06-28 01:47:04,558 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 469 selfloop transitions, 19 changer transitions 0/494 dead transitions. [2024-06-28 01:47:04,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 494 transitions, 9167 flow [2024-06-28 01:47:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 01:47:04,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-06-28 01:47:04,559 INFO L175 Difference]: Start difference. First operand has 315 places, 464 transitions, 7835 flow. Second operand 9 states and 142 transitions. [2024-06-28 01:47:04,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 494 transitions, 9167 flow [2024-06-28 01:47:05,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 494 transitions, 8933 flow, removed 89 selfloop flow, removed 4 redundant places. [2024-06-28 01:47:05,257 INFO L231 Difference]: Finished difference. Result has 320 places, 466 transitions, 7778 flow [2024-06-28 01:47:05,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7607, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7778, PETRI_PLACES=320, PETRI_TRANSITIONS=466} [2024-06-28 01:47:05,258 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 280 predicate places. [2024-06-28 01:47:05,258 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 466 transitions, 7778 flow [2024-06-28 01:47:05,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:05,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:05,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:05,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:47:05,259 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:05,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash -385316291, now seen corresponding path program 4 times [2024-06-28 01:47:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:05,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684682357] [2024-06-28 01:47:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:06,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:06,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684682357] [2024-06-28 01:47:06,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684682357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:06,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:06,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:06,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260171945] [2024-06-28 01:47:06,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:06,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:06,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:06,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:06,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:06,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:06,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 466 transitions, 7778 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:06,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:06,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:06,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:07,450 INFO L124 PetriNetUnfolderBase]: 2567/4312 cut-off events. [2024-06-28 01:47:07,450 INFO L125 PetriNetUnfolderBase]: For 200427/200427 co-relation queries the response was YES. [2024-06-28 01:47:07,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34996 conditions, 4312 events. 2567/4312 cut-off events. For 200427/200427 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26922 event pairs, 857 based on Foata normal form. 2/4252 useless extension candidates. Maximal degree in co-relation 34847. Up to 3974 conditions per place. [2024-06-28 01:47:07,509 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 475 selfloop transitions, 28 changer transitions 0/509 dead transitions. [2024-06-28 01:47:07,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 509 transitions, 9236 flow [2024-06-28 01:47:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:47:07,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-28 01:47:07,511 INFO L175 Difference]: Start difference. First operand has 320 places, 466 transitions, 7778 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:47:07,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 509 transitions, 9236 flow [2024-06-28 01:47:08,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 509 transitions, 9073 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:08,278 INFO L231 Difference]: Finished difference. Result has 325 places, 474 transitions, 7936 flow [2024-06-28 01:47:08,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7623, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7936, PETRI_PLACES=325, PETRI_TRANSITIONS=474} [2024-06-28 01:47:08,279 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 285 predicate places. [2024-06-28 01:47:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 474 transitions, 7936 flow [2024-06-28 01:47:08,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:08,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:08,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:47:08,280 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:08,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1739376807, now seen corresponding path program 10 times [2024-06-28 01:47:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:08,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844969307] [2024-06-28 01:47:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:08,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:08,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844969307] [2024-06-28 01:47:08,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844969307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:08,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:08,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61345426] [2024-06-28 01:47:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:09,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:09,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 474 transitions, 7936 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:09,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:09,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:09,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:10,131 INFO L124 PetriNetUnfolderBase]: 2563/4306 cut-off events. [2024-06-28 01:47:10,131 INFO L125 PetriNetUnfolderBase]: For 198570/198570 co-relation queries the response was YES. [2024-06-28 01:47:10,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34834 conditions, 4306 events. 2563/4306 cut-off events. For 198570/198570 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26963 event pairs, 862 based on Foata normal form. 2/4246 useless extension candidates. Maximal degree in co-relation 34683. Up to 3968 conditions per place. [2024-06-28 01:47:10,187 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 471 selfloop transitions, 28 changer transitions 0/505 dead transitions. [2024-06-28 01:47:10,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 505 transitions, 9116 flow [2024-06-28 01:47:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:47:10,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:47:10,188 INFO L175 Difference]: Start difference. First operand has 325 places, 474 transitions, 7936 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:47:10,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 505 transitions, 9116 flow [2024-06-28 01:47:10,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 505 transitions, 8830 flow, removed 133 selfloop flow, removed 5 redundant places. [2024-06-28 01:47:10,920 INFO L231 Difference]: Finished difference. Result has 330 places, 474 transitions, 7712 flow [2024-06-28 01:47:10,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7712, PETRI_PLACES=330, PETRI_TRANSITIONS=474} [2024-06-28 01:47:10,920 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 290 predicate places. [2024-06-28 01:47:10,921 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 474 transitions, 7712 flow [2024-06-28 01:47:10,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:10,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:10,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:10,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:47:10,921 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:10,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1747657961, now seen corresponding path program 17 times [2024-06-28 01:47:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:10,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287397978] [2024-06-28 01:47:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:10,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287397978] [2024-06-28 01:47:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287397978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:11,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:11,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:47:11,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071250778] [2024-06-28 01:47:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:47:11,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:11,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:47:11,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:47:11,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:11,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 474 transitions, 7712 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:11,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:11,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:11,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:12,726 INFO L124 PetriNetUnfolderBase]: 2578/4326 cut-off events. [2024-06-28 01:47:12,727 INFO L125 PetriNetUnfolderBase]: For 198424/198424 co-relation queries the response was YES. [2024-06-28 01:47:12,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34804 conditions, 4326 events. 2578/4326 cut-off events. For 198424/198424 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 27178 event pairs, 598 based on Foata normal form. 2/4266 useless extension candidates. Maximal degree in co-relation 34651. Up to 3922 conditions per place. [2024-06-28 01:47:12,785 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 452 selfloop transitions, 46 changer transitions 0/504 dead transitions. [2024-06-28 01:47:12,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 504 transitions, 9008 flow [2024-06-28 01:47:12,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:47:12,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-28 01:47:12,786 INFO L175 Difference]: Start difference. First operand has 330 places, 474 transitions, 7712 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:47:12,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 504 transitions, 9008 flow [2024-06-28 01:47:13,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 504 transitions, 8913 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:13,515 INFO L231 Difference]: Finished difference. Result has 330 places, 476 transitions, 7860 flow [2024-06-28 01:47:13,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7617, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7860, PETRI_PLACES=330, PETRI_TRANSITIONS=476} [2024-06-28 01:47:13,516 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 290 predicate places. [2024-06-28 01:47:13,516 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 476 transitions, 7860 flow [2024-06-28 01:47:13,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:13,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:13,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:13,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:47:13,518 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:13,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash -681131001, now seen corresponding path program 11 times [2024-06-28 01:47:13,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:13,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578601526] [2024-06-28 01:47:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:14,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:14,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578601526] [2024-06-28 01:47:14,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578601526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:14,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:14,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105020617] [2024-06-28 01:47:14,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:14,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:14,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:14,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:14,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 476 transitions, 7860 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:14,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:14,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:14,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:15,379 INFO L124 PetriNetUnfolderBase]: 2598/4356 cut-off events. [2024-06-28 01:47:15,379 INFO L125 PetriNetUnfolderBase]: For 204772/204772 co-relation queries the response was YES. [2024-06-28 01:47:15,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35215 conditions, 4356 events. 2598/4356 cut-off events. For 204772/204772 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 27354 event pairs, 590 based on Foata normal form. 2/4296 useless extension candidates. Maximal degree in co-relation 35061. Up to 3385 conditions per place. [2024-06-28 01:47:15,436 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 404 selfloop transitions, 107 changer transitions 0/517 dead transitions. [2024-06-28 01:47:15,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 517 transitions, 9545 flow [2024-06-28 01:47:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:47:15,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:47:15,437 INFO L175 Difference]: Start difference. First operand has 330 places, 476 transitions, 7860 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:47:15,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 517 transitions, 9545 flow [2024-06-28 01:47:16,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 517 transitions, 9318 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:16,191 INFO L231 Difference]: Finished difference. Result has 333 places, 479 transitions, 7962 flow [2024-06-28 01:47:16,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7633, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7962, PETRI_PLACES=333, PETRI_TRANSITIONS=479} [2024-06-28 01:47:16,192 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 293 predicate places. [2024-06-28 01:47:16,192 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 479 transitions, 7962 flow [2024-06-28 01:47:16,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:16,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:16,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:16,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:47:16,193 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:16,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -680891681, now seen corresponding path program 5 times [2024-06-28 01:47:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:16,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816929490] [2024-06-28 01:47:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:17,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:17,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816929490] [2024-06-28 01:47:17,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816929490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:17,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:17,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260316703] [2024-06-28 01:47:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:17,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:17,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:17,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:17,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:17,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 479 transitions, 7962 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:17,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:17,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:17,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:18,329 INFO L124 PetriNetUnfolderBase]: 2613/4381 cut-off events. [2024-06-28 01:47:18,330 INFO L125 PetriNetUnfolderBase]: For 205745/205745 co-relation queries the response was YES. [2024-06-28 01:47:18,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35607 conditions, 4381 events. 2613/4381 cut-off events. For 205745/205745 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27556 event pairs, 620 based on Foata normal form. 2/4321 useless extension candidates. Maximal degree in co-relation 35452. Up to 3936 conditions per place. [2024-06-28 01:47:18,380 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 444 selfloop transitions, 59 changer transitions 0/509 dead transitions. [2024-06-28 01:47:18,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 509 transitions, 9332 flow [2024-06-28 01:47:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:47:18,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-28 01:47:18,382 INFO L175 Difference]: Start difference. First operand has 333 places, 479 transitions, 7962 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:47:18,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 509 transitions, 9332 flow [2024-06-28 01:47:19,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 509 transitions, 9024 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:19,107 INFO L231 Difference]: Finished difference. Result has 334 places, 481 transitions, 7915 flow [2024-06-28 01:47:19,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7654, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7915, PETRI_PLACES=334, PETRI_TRANSITIONS=481} [2024-06-28 01:47:19,109 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 294 predicate places. [2024-06-28 01:47:19,109 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 481 transitions, 7915 flow [2024-06-28 01:47:19,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:19,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:19,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:19,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:47:19,110 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:19,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:19,110 INFO L85 PathProgramCache]: Analyzing trace with hash -680900361, now seen corresponding path program 12 times [2024-06-28 01:47:19,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:19,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448045736] [2024-06-28 01:47:19,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:19,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:19,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:19,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448045736] [2024-06-28 01:47:19,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448045736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:19,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:19,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:19,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652164484] [2024-06-28 01:47:19,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:19,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:19,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:19,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:19,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 481 transitions, 7915 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:19,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:19,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:19,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:21,000 INFO L124 PetriNetUnfolderBase]: 2609/4375 cut-off events. [2024-06-28 01:47:21,001 INFO L125 PetriNetUnfolderBase]: For 204089/204089 co-relation queries the response was YES. [2024-06-28 01:47:21,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35077 conditions, 4375 events. 2609/4375 cut-off events. For 204089/204089 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27539 event pairs, 595 based on Foata normal form. 2/4315 useless extension candidates. Maximal degree in co-relation 34921. Up to 3407 conditions per place. [2024-06-28 01:47:21,061 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 409 selfloop transitions, 103 changer transitions 0/518 dead transitions. [2024-06-28 01:47:21,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 518 transitions, 9357 flow [2024-06-28 01:47:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:47:21,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:47:21,062 INFO L175 Difference]: Start difference. First operand has 334 places, 481 transitions, 7915 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:47:21,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 518 transitions, 9357 flow [2024-06-28 01:47:21,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 518 transitions, 9050 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:21,880 INFO L231 Difference]: Finished difference. Result has 337 places, 481 transitions, 7820 flow [2024-06-28 01:47:21,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7608, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7820, PETRI_PLACES=337, PETRI_TRANSITIONS=481} [2024-06-28 01:47:21,881 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 297 predicate places. [2024-06-28 01:47:21,881 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 481 transitions, 7820 flow [2024-06-28 01:47:21,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:21,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:21,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:47:21,882 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:21,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash -49148253, now seen corresponding path program 18 times [2024-06-28 01:47:21,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:21,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369447647] [2024-06-28 01:47:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:22,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:22,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369447647] [2024-06-28 01:47:22,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369447647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:22,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:22,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:22,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851834373] [2024-06-28 01:47:22,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:22,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:22,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:22,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:22,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:22,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 481 transitions, 7820 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:22,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:22,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:22,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:23,755 INFO L124 PetriNetUnfolderBase]: 2624/4396 cut-off events. [2024-06-28 01:47:23,756 INFO L125 PetriNetUnfolderBase]: For 201433/201433 co-relation queries the response was YES. [2024-06-28 01:47:23,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35406 conditions, 4396 events. 2624/4396 cut-off events. For 201433/201433 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 27637 event pairs, 335 based on Foata normal form. 2/4333 useless extension candidates. Maximal degree in co-relation 35249. Up to 3790 conditions per place. [2024-06-28 01:47:23,820 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 407 selfloop transitions, 100 changer transitions 0/513 dead transitions. [2024-06-28 01:47:23,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 513 transitions, 9148 flow [2024-06-28 01:47:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:23,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:47:23,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-28 01:47:23,822 INFO L175 Difference]: Start difference. First operand has 337 places, 481 transitions, 7820 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:47:23,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 513 transitions, 9148 flow [2024-06-28 01:47:24,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 513 transitions, 8879 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:24,678 INFO L231 Difference]: Finished difference. Result has 336 places, 483 transitions, 7908 flow [2024-06-28 01:47:24,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7551, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7908, PETRI_PLACES=336, PETRI_TRANSITIONS=483} [2024-06-28 01:47:24,679 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 296 predicate places. [2024-06-28 01:47:24,679 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 483 transitions, 7908 flow [2024-06-28 01:47:24,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:24,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:24,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:24,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:47:24,679 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:24,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash -42472899, now seen corresponding path program 6 times [2024-06-28 01:47:24,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:24,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114878613] [2024-06-28 01:47:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:24,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:25,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:25,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114878613] [2024-06-28 01:47:25,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114878613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:25,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:25,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:25,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117543661] [2024-06-28 01:47:25,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:25,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:25,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:25,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:25,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 483 transitions, 7908 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:25,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:25,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:25,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:26,777 INFO L124 PetriNetUnfolderBase]: 2624/4400 cut-off events. [2024-06-28 01:47:26,778 INFO L125 PetriNetUnfolderBase]: For 206825/206825 co-relation queries the response was YES. [2024-06-28 01:47:26,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35272 conditions, 4400 events. 2624/4400 cut-off events. For 206825/206825 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27697 event pairs, 621 based on Foata normal form. 2/4340 useless extension candidates. Maximal degree in co-relation 35114. Up to 4086 conditions per place. [2024-06-28 01:47:26,839 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 480 selfloop transitions, 32 changer transitions 0/518 dead transitions. [2024-06-28 01:47:26,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 518 transitions, 9309 flow [2024-06-28 01:47:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:47:26,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 01:47:26,840 INFO L175 Difference]: Start difference. First operand has 336 places, 483 transitions, 7908 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:47:26,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 518 transitions, 9309 flow [2024-06-28 01:47:27,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 518 transitions, 8968 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:27,646 INFO L231 Difference]: Finished difference. Result has 340 places, 488 transitions, 7847 flow [2024-06-28 01:47:27,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7567, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7847, PETRI_PLACES=340, PETRI_TRANSITIONS=488} [2024-06-28 01:47:27,647 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 300 predicate places. [2024-06-28 01:47:27,647 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 488 transitions, 7847 flow [2024-06-28 01:47:27,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:27,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:27,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:27,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:47:27,648 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:27,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:27,648 INFO L85 PathProgramCache]: Analyzing trace with hash -42719163, now seen corresponding path program 19 times [2024-06-28 01:47:27,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:27,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288774336] [2024-06-28 01:47:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:27,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288774336] [2024-06-28 01:47:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288774336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851709102] [2024-06-28 01:47:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:28,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:28,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:28,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:28,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 488 transitions, 7847 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:28,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:28,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:28,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:29,530 INFO L124 PetriNetUnfolderBase]: 2639/4425 cut-off events. [2024-06-28 01:47:29,530 INFO L125 PetriNetUnfolderBase]: For 211644/211644 co-relation queries the response was YES. [2024-06-28 01:47:29,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35291 conditions, 4425 events. 2639/4425 cut-off events. For 211644/211644 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27883 event pairs, 622 based on Foata normal form. 2/4365 useless extension candidates. Maximal degree in co-relation 35131. Up to 4111 conditions per place. [2024-06-28 01:47:29,588 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 482 selfloop transitions, 29 changer transitions 0/517 dead transitions. [2024-06-28 01:47:29,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 517 transitions, 9177 flow [2024-06-28 01:47:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 01:47:29,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-06-28 01:47:29,589 INFO L175 Difference]: Start difference. First operand has 340 places, 488 transitions, 7847 flow. Second operand 9 states and 142 transitions. [2024-06-28 01:47:29,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 517 transitions, 9177 flow [2024-06-28 01:47:30,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 517 transitions, 8936 flow, removed 91 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:30,398 INFO L231 Difference]: Finished difference. Result has 342 places, 490 transitions, 7827 flow [2024-06-28 01:47:30,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7606, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7827, PETRI_PLACES=342, PETRI_TRANSITIONS=490} [2024-06-28 01:47:30,399 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 302 predicate places. [2024-06-28 01:47:30,399 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 490 transitions, 7827 flow [2024-06-28 01:47:30,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:30,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:30,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:30,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:47:30,400 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:30,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash 491328451, now seen corresponding path program 20 times [2024-06-28 01:47:30,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:30,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338440192] [2024-06-28 01:47:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:30,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:31,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:31,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338440192] [2024-06-28 01:47:31,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338440192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:31,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:31,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:31,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747265951] [2024-06-28 01:47:31,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:31,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:31,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:31,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:31,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 490 transitions, 7827 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:31,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:31,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:31,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:32,524 INFO L124 PetriNetUnfolderBase]: 2639/4421 cut-off events. [2024-06-28 01:47:32,525 INFO L125 PetriNetUnfolderBase]: For 206179/206179 co-relation queries the response was YES. [2024-06-28 01:47:32,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35032 conditions, 4421 events. 2639/4421 cut-off events. For 206179/206179 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27837 event pairs, 333 based on Foata normal form. 2/4358 useless extension candidates. Maximal degree in co-relation 34871. Up to 3815 conditions per place. [2024-06-28 01:47:32,576 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 418 selfloop transitions, 98 changer transitions 0/522 dead transitions. [2024-06-28 01:47:32,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 522 transitions, 9181 flow [2024-06-28 01:47:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 01:47:32,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:47:32,578 INFO L175 Difference]: Start difference. First operand has 342 places, 490 transitions, 7827 flow. Second operand 9 states and 144 transitions. [2024-06-28 01:47:32,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 522 transitions, 9181 flow [2024-06-28 01:47:33,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 522 transitions, 8970 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:33,386 INFO L231 Difference]: Finished difference. Result has 344 places, 492 transitions, 7979 flow [2024-06-28 01:47:33,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7616, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7979, PETRI_PLACES=344, PETRI_TRANSITIONS=492} [2024-06-28 01:47:33,386 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 304 predicate places. [2024-06-28 01:47:33,386 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 492 transitions, 7979 flow [2024-06-28 01:47:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:33,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:33,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:33,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:47:33,387 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:33,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1570858303, now seen corresponding path program 13 times [2024-06-28 01:47:33,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:33,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660039385] [2024-06-28 01:47:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:34,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660039385] [2024-06-28 01:47:34,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660039385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:34,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:34,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:34,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671922007] [2024-06-28 01:47:34,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:34,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:34,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:34,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:34,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:34,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:34,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 492 transitions, 7979 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:34,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:34,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:34,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:35,339 INFO L124 PetriNetUnfolderBase]: 2659/4455 cut-off events. [2024-06-28 01:47:35,339 INFO L125 PetriNetUnfolderBase]: For 212101/212101 co-relation queries the response was YES. [2024-06-28 01:47:35,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35321 conditions, 4455 events. 2659/4455 cut-off events. For 212101/212101 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28084 event pairs, 614 based on Foata normal form. 2/4395 useless extension candidates. Maximal degree in co-relation 35159. Up to 4033 conditions per place. [2024-06-28 01:47:35,400 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 480 selfloop transitions, 43 changer transitions 0/529 dead transitions. [2024-06-28 01:47:35,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 529 transitions, 9472 flow [2024-06-28 01:47:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:47:35,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:47:35,402 INFO L175 Difference]: Start difference. First operand has 344 places, 492 transitions, 7979 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:47:35,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 529 transitions, 9472 flow [2024-06-28 01:47:36,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 529 transitions, 9125 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:36,394 INFO L231 Difference]: Finished difference. Result has 347 places, 495 transitions, 7827 flow [2024-06-28 01:47:36,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7632, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7827, PETRI_PLACES=347, PETRI_TRANSITIONS=495} [2024-06-28 01:47:36,395 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 307 predicate places. [2024-06-28 01:47:36,395 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 495 transitions, 7827 flow [2024-06-28 01:47:36,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:36,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:36,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:36,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:47:36,396 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:36,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash 491513025, now seen corresponding path program 14 times [2024-06-28 01:47:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:36,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983011464] [2024-06-28 01:47:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:37,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:37,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983011464] [2024-06-28 01:47:37,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983011464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:37,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6709580] [2024-06-28 01:47:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:37,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:37,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:37,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:37,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 495 transitions, 7827 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:37,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:37,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:37,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:38,467 INFO L124 PetriNetUnfolderBase]: 2659/4439 cut-off events. [2024-06-28 01:47:38,467 INFO L125 PetriNetUnfolderBase]: For 202475/202475 co-relation queries the response was YES. [2024-06-28 01:47:38,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34820 conditions, 4439 events. 2659/4439 cut-off events. For 202475/202475 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 27995 event pairs, 345 based on Foata normal form. 2/4380 useless extension candidates. Maximal degree in co-relation 34657. Up to 3817 conditions per place. [2024-06-28 01:47:38,530 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 419 selfloop transitions, 103 changer transitions 0/528 dead transitions. [2024-06-28 01:47:38,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 528 transitions, 9215 flow [2024-06-28 01:47:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:47:38,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-28 01:47:38,532 INFO L175 Difference]: Start difference. First operand has 347 places, 495 transitions, 7827 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:47:38,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 528 transitions, 9215 flow [2024-06-28 01:47:39,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 528 transitions, 9041 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:39,385 INFO L231 Difference]: Finished difference. Result has 348 places, 498 transitions, 8049 flow [2024-06-28 01:47:39,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7653, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8049, PETRI_PLACES=348, PETRI_TRANSITIONS=498} [2024-06-28 01:47:39,385 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 308 predicate places. [2024-06-28 01:47:39,386 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 498 transitions, 8049 flow [2024-06-28 01:47:39,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:39,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:39,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:39,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:47:39,386 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:39,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash -42712219, now seen corresponding path program 15 times [2024-06-28 01:47:39,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:39,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18712375] [2024-06-28 01:47:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:39,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:40,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18712375] [2024-06-28 01:47:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18712375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:40,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:40,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:40,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592827222] [2024-06-28 01:47:40,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:40,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:40,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:40,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:40,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:40,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:40,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 498 transitions, 8049 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:40,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:40,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:40,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:41,567 INFO L124 PetriNetUnfolderBase]: 2655/4437 cut-off events. [2024-06-28 01:47:41,567 INFO L125 PetriNetUnfolderBase]: For 203055/203055 co-relation queries the response was YES. [2024-06-28 01:47:41,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34802 conditions, 4437 events. 2655/4437 cut-off events. For 203055/203055 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28013 event pairs, 615 based on Foata normal form. 2/4381 useless extension candidates. Maximal degree in co-relation 34638. Up to 4030 conditions per place. [2024-06-28 01:47:41,629 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 481 selfloop transitions, 44 changer transitions 0/531 dead transitions. [2024-06-28 01:47:41,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 531 transitions, 9289 flow [2024-06-28 01:47:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:47:41,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:47:41,630 INFO L175 Difference]: Start difference. First operand has 348 places, 498 transitions, 8049 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:47:41,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 531 transitions, 9289 flow [2024-06-28 01:47:42,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 531 transitions, 8843 flow, removed 123 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:42,517 INFO L231 Difference]: Finished difference. Result has 351 places, 498 transitions, 7697 flow [2024-06-28 01:47:42,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7697, PETRI_PLACES=351, PETRI_TRANSITIONS=498} [2024-06-28 01:47:42,518 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 311 predicate places. [2024-06-28 01:47:42,518 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 498 transitions, 7697 flow [2024-06-28 01:47:42,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:42,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:42,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:42,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:47:42,518 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:42,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:42,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1310843045, now seen corresponding path program 1 times [2024-06-28 01:47:42,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:42,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143974523] [2024-06-28 01:47:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:43,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:43,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143974523] [2024-06-28 01:47:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143974523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:43,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950012444] [2024-06-28 01:47:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:43,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:43,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:43,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:43,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 498 transitions, 7697 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:43,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:43,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:43,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:44,589 INFO L124 PetriNetUnfolderBase]: 2672/4468 cut-off events. [2024-06-28 01:47:44,590 INFO L125 PetriNetUnfolderBase]: For 203714/203714 co-relation queries the response was YES. [2024-06-28 01:47:44,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34682 conditions, 4468 events. 2672/4468 cut-off events. For 203714/203714 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 28030 event pairs, 590 based on Foata normal form. 2/4413 useless extension candidates. Maximal degree in co-relation 34517. Up to 3921 conditions per place. [2024-06-28 01:47:44,652 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 453 selfloop transitions, 84 changer transitions 0/543 dead transitions. [2024-06-28 01:47:44,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 543 transitions, 9155 flow [2024-06-28 01:47:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:44,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:47:44,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:47:44,654 INFO L175 Difference]: Start difference. First operand has 351 places, 498 transitions, 7697 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:47:44,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 543 transitions, 9155 flow [2024-06-28 01:47:45,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 543 transitions, 9013 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:45,482 INFO L231 Difference]: Finished difference. Result has 353 places, 504 transitions, 7977 flow [2024-06-28 01:47:45,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7559, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7977, PETRI_PLACES=353, PETRI_TRANSITIONS=504} [2024-06-28 01:47:45,491 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 313 predicate places. [2024-06-28 01:47:45,491 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 504 transitions, 7977 flow [2024-06-28 01:47:45,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:45,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:45,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:45,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:47:45,492 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:45,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -413402497, now seen corresponding path program 2 times [2024-06-28 01:47:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:45,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010607487] [2024-06-28 01:47:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:46,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:46,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010607487] [2024-06-28 01:47:46,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010607487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:46,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:46,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400802725] [2024-06-28 01:47:46,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:46,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:46,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:46,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:46,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 504 transitions, 7977 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:46,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:46,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:46,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:47,545 INFO L124 PetriNetUnfolderBase]: 2696/4506 cut-off events. [2024-06-28 01:47:47,545 INFO L125 PetriNetUnfolderBase]: For 209947/209947 co-relation queries the response was YES. [2024-06-28 01:47:47,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35369 conditions, 4506 events. 2696/4506 cut-off events. For 209947/209947 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 28344 event pairs, 701 based on Foata normal form. 2/4451 useless extension candidates. Maximal degree in co-relation 35202. Up to 4013 conditions per place. [2024-06-28 01:47:47,606 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 464 selfloop transitions, 78 changer transitions 0/548 dead transitions. [2024-06-28 01:47:47,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 548 transitions, 9551 flow [2024-06-28 01:47:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:47:47,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:47:47,610 INFO L175 Difference]: Start difference. First operand has 353 places, 504 transitions, 7977 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:47:47,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 548 transitions, 9551 flow [2024-06-28 01:47:48,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 548 transitions, 9136 flow, removed 150 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:48,583 INFO L231 Difference]: Finished difference. Result has 357 places, 508 transitions, 8054 flow [2024-06-28 01:47:48,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7715, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8054, PETRI_PLACES=357, PETRI_TRANSITIONS=508} [2024-06-28 01:47:48,584 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 317 predicate places. [2024-06-28 01:47:48,584 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 508 transitions, 8054 flow [2024-06-28 01:47:48,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:48,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:48,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:48,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:47:48,585 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:48,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:48,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1407269663, now seen corresponding path program 3 times [2024-06-28 01:47:48,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:48,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453904401] [2024-06-28 01:47:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:49,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453904401] [2024-06-28 01:47:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453904401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:49,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:49,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:49,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730396498] [2024-06-28 01:47:49,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:49,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:49,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:49,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:49,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:49,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 508 transitions, 8054 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:49,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:49,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:49,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:50,741 INFO L124 PetriNetUnfolderBase]: 2743/4588 cut-off events. [2024-06-28 01:47:50,742 INFO L125 PetriNetUnfolderBase]: For 225455/225455 co-relation queries the response was YES. [2024-06-28 01:47:50,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36167 conditions, 4588 events. 2743/4588 cut-off events. For 225455/225455 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 29058 event pairs, 663 based on Foata normal form. 2/4533 useless extension candidates. Maximal degree in co-relation 35999. Up to 3945 conditions per place. [2024-06-28 01:47:50,803 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 439 selfloop transitions, 123 changer transitions 0/568 dead transitions. [2024-06-28 01:47:50,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 568 transitions, 10228 flow [2024-06-28 01:47:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:47:50,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 01:47:50,805 INFO L175 Difference]: Start difference. First operand has 357 places, 508 transitions, 8054 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:47:50,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 568 transitions, 10228 flow [2024-06-28 01:47:51,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 568 transitions, 9958 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:51,798 INFO L231 Difference]: Finished difference. Result has 362 places, 525 transitions, 8804 flow [2024-06-28 01:47:51,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7784, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8804, PETRI_PLACES=362, PETRI_TRANSITIONS=525} [2024-06-28 01:47:51,800 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 322 predicate places. [2024-06-28 01:47:51,800 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 525 transitions, 8804 flow [2024-06-28 01:47:51,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:51,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:51,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:51,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:47:51,801 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:51,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1420235010, now seen corresponding path program 1 times [2024-06-28 01:47:51,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:51,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561996815] [2024-06-28 01:47:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:51,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561996815] [2024-06-28 01:47:52,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561996815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:52,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:52,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586677157] [2024-06-28 01:47:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:52,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:53,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:53,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 525 transitions, 8804 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:53,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:53,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:53,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:54,404 INFO L124 PetriNetUnfolderBase]: 2753/4606 cut-off events. [2024-06-28 01:47:54,405 INFO L125 PetriNetUnfolderBase]: For 227564/227564 co-relation queries the response was YES. [2024-06-28 01:47:54,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36631 conditions, 4606 events. 2753/4606 cut-off events. For 227564/227564 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29178 event pairs, 677 based on Foata normal form. 1/4550 useless extension candidates. Maximal degree in co-relation 36460. Up to 4052 conditions per place. [2024-06-28 01:47:54,463 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 446 selfloop transitions, 110 changer transitions 0/562 dead transitions. [2024-06-28 01:47:54,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 562 transitions, 10268 flow [2024-06-28 01:47:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:47:54,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-28 01:47:54,465 INFO L175 Difference]: Start difference. First operand has 362 places, 525 transitions, 8804 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:47:54,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 562 transitions, 10268 flow [2024-06-28 01:47:55,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 562 transitions, 9772 flow, removed 166 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:55,440 INFO L231 Difference]: Finished difference. Result has 364 places, 528 transitions, 8755 flow [2024-06-28 01:47:55,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8308, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8755, PETRI_PLACES=364, PETRI_TRANSITIONS=528} [2024-06-28 01:47:55,441 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 324 predicate places. [2024-06-28 01:47:55,441 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 528 transitions, 8755 flow [2024-06-28 01:47:55,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:55,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:55,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:55,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:47:55,442 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:55,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:55,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1415169083, now seen corresponding path program 4 times [2024-06-28 01:47:55,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:55,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456676851] [2024-06-28 01:47:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:55,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:56,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:56,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456676851] [2024-06-28 01:47:56,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456676851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:56,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:56,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:56,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758901423] [2024-06-28 01:47:56,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:56,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:56,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:56,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:56,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 528 transitions, 8755 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:56,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:56,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:56,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:57,809 INFO L124 PetriNetUnfolderBase]: 2768/4626 cut-off events. [2024-06-28 01:47:57,810 INFO L125 PetriNetUnfolderBase]: For 232764/232764 co-relation queries the response was YES. [2024-06-28 01:47:57,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36893 conditions, 4626 events. 2768/4626 cut-off events. For 232764/232764 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 29301 event pairs, 697 based on Foata normal form. 2/4571 useless extension candidates. Maximal degree in co-relation 36720. Up to 4133 conditions per place. [2024-06-28 01:47:57,869 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 481 selfloop transitions, 83 changer transitions 0/570 dead transitions. [2024-06-28 01:47:57,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 570 transitions, 10235 flow [2024-06-28 01:47:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:47:57,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:47:57,870 INFO L175 Difference]: Start difference. First operand has 364 places, 528 transitions, 8755 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:47:57,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 570 transitions, 10235 flow [2024-06-28 01:47:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 570 transitions, 9896 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:58,994 INFO L231 Difference]: Finished difference. Result has 367 places, 530 transitions, 8760 flow [2024-06-28 01:47:58,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8416, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8760, PETRI_PLACES=367, PETRI_TRANSITIONS=530} [2024-06-28 01:47:58,994 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 327 predicate places. [2024-06-28 01:47:58,994 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 530 transitions, 8760 flow [2024-06-28 01:47:58,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:58,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:58,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:58,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:47:58,995 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:58,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1419787463, now seen corresponding path program 5 times [2024-06-28 01:47:58,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:58,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248394278] [2024-06-28 01:47:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:58,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:59,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:59,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248394278] [2024-06-28 01:47:59,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248394278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:59,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:59,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:59,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145064556] [2024-06-28 01:47:59,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:59,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:59,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:59,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:47:59,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 530 transitions, 8760 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:59,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:59,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:47:59,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:01,388 INFO L124 PetriNetUnfolderBase]: 2768/4630 cut-off events. [2024-06-28 01:48:01,388 INFO L125 PetriNetUnfolderBase]: For 229143/229143 co-relation queries the response was YES. [2024-06-28 01:48:01,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36771 conditions, 4630 events. 2768/4630 cut-off events. For 229143/229143 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 29326 event pairs, 685 based on Foata normal form. 2/4575 useless extension candidates. Maximal degree in co-relation 36597. Up to 4096 conditions per place. [2024-06-28 01:48:01,443 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 458 selfloop transitions, 107 changer transitions 0/571 dead transitions. [2024-06-28 01:48:01,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 571 transitions, 10222 flow [2024-06-28 01:48:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:48:01,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 01:48:01,444 INFO L175 Difference]: Start difference. First operand has 367 places, 530 transitions, 8760 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:48:01,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 571 transitions, 10222 flow [2024-06-28 01:48:02,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 571 transitions, 9659 flow, removed 214 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:02,450 INFO L231 Difference]: Finished difference. Result has 370 places, 532 transitions, 8571 flow [2024-06-28 01:48:02,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8329, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8571, PETRI_PLACES=370, PETRI_TRANSITIONS=532} [2024-06-28 01:48:02,451 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 330 predicate places. [2024-06-28 01:48:02,451 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 532 transitions, 8571 flow [2024-06-28 01:48:02,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:02,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:02,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:02,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:48:02,452 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:02,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash -237319847, now seen corresponding path program 1 times [2024-06-28 01:48:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:02,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992628994] [2024-06-28 01:48:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:02,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:03,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992628994] [2024-06-28 01:48:03,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992628994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:03,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:03,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:03,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268338386] [2024-06-28 01:48:03,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:03,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:03,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:03,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 532 transitions, 8571 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:03,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:03,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:03,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:04,908 INFO L124 PetriNetUnfolderBase]: 2848/4761 cut-off events. [2024-06-28 01:48:04,909 INFO L125 PetriNetUnfolderBase]: For 263306/263306 co-relation queries the response was YES. [2024-06-28 01:48:04,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37538 conditions, 4761 events. 2848/4761 cut-off events. For 263306/263306 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 30426 event pairs, 632 based on Foata normal form. 10/4714 useless extension candidates. Maximal degree in co-relation 37363. Up to 4131 conditions per place. [2024-06-28 01:48:05,096 INFO L140 encePairwiseOnDemand]: 20/36 looper letters, 485 selfloop transitions, 92 changer transitions 0/583 dead transitions. [2024-06-28 01:48:05,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 583 transitions, 10155 flow [2024-06-28 01:48:05,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:48:05,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:48:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:48:05,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-06-28 01:48:05,098 INFO L175 Difference]: Start difference. First operand has 370 places, 532 transitions, 8571 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:48:05,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 583 transitions, 10155 flow [2024-06-28 01:48:06,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 583 transitions, 9906 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 01:48:06,244 INFO L231 Difference]: Finished difference. Result has 372 places, 535 transitions, 8669 flow [2024-06-28 01:48:06,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8330, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8669, PETRI_PLACES=372, PETRI_TRANSITIONS=535} [2024-06-28 01:48:06,244 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 332 predicate places. [2024-06-28 01:48:06,244 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 535 transitions, 8669 flow [2024-06-28 01:48:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:06,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:06,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:06,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:48:06,245 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:06,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:06,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1334891857, now seen corresponding path program 6 times [2024-06-28 01:48:06,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:06,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130754006] [2024-06-28 01:48:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:06,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130754006] [2024-06-28 01:48:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130754006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:07,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:07,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329199044] [2024-06-28 01:48:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:07,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:07,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:07,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:07,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 535 transitions, 8669 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:07,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:07,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:07,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:08,636 INFO L124 PetriNetUnfolderBase]: 2881/4816 cut-off events. [2024-06-28 01:48:08,636 INFO L125 PetriNetUnfolderBase]: For 250425/250425 co-relation queries the response was YES. [2024-06-28 01:48:08,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38139 conditions, 4816 events. 2881/4816 cut-off events. For 250425/250425 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 30815 event pairs, 784 based on Foata normal form. 2/4761 useless extension candidates. Maximal degree in co-relation 37963. Up to 4313 conditions per place. [2024-06-28 01:48:08,709 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 499 selfloop transitions, 77 changer transitions 0/582 dead transitions. [2024-06-28 01:48:08,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 582 transitions, 10200 flow [2024-06-28 01:48:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:48:08,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 01:48:08,711 INFO L175 Difference]: Start difference. First operand has 372 places, 535 transitions, 8669 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:48:08,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 582 transitions, 10200 flow [2024-06-28 01:48:10,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 582 transitions, 9962 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:10,191 INFO L231 Difference]: Finished difference. Result has 374 places, 541 transitions, 8806 flow [2024-06-28 01:48:10,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8431, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8806, PETRI_PLACES=374, PETRI_TRANSITIONS=541} [2024-06-28 01:48:10,191 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 334 predicate places. [2024-06-28 01:48:10,192 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 541 transitions, 8806 flow [2024-06-28 01:48:10,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:10,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:10,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:10,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:48:10,192 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:10,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1082841361, now seen corresponding path program 7 times [2024-06-28 01:48:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:10,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253198915] [2024-06-28 01:48:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:10,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:10,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:10,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253198915] [2024-06-28 01:48:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253198915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:10,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:10,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:10,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402562850] [2024-06-28 01:48:10,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:11,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:11,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 541 transitions, 8806 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:11,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:11,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:11,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:12,480 INFO L124 PetriNetUnfolderBase]: 2913/4872 cut-off events. [2024-06-28 01:48:12,480 INFO L125 PetriNetUnfolderBase]: For 248845/248845 co-relation queries the response was YES. [2024-06-28 01:48:12,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38445 conditions, 4872 events. 2913/4872 cut-off events. For 248845/248845 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 31265 event pairs, 803 based on Foata normal form. 2/4817 useless extension candidates. Maximal degree in co-relation 38268. Up to 4385 conditions per place. [2024-06-28 01:48:12,551 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 505 selfloop transitions, 80 changer transitions 0/591 dead transitions. [2024-06-28 01:48:12,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 591 transitions, 10414 flow [2024-06-28 01:48:12,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:48:12,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 01:48:12,552 INFO L175 Difference]: Start difference. First operand has 374 places, 541 transitions, 8806 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:48:12,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 591 transitions, 10414 flow [2024-06-28 01:48:13,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 591 transitions, 10131 flow, removed 81 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:13,800 INFO L231 Difference]: Finished difference. Result has 380 places, 553 transitions, 9010 flow [2024-06-28 01:48:13,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8523, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9010, PETRI_PLACES=380, PETRI_TRANSITIONS=553} [2024-06-28 01:48:13,800 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 340 predicate places. [2024-06-28 01:48:13,800 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 553 transitions, 9010 flow [2024-06-28 01:48:13,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:13,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:13,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:13,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:48:13,801 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:13,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1493926379, now seen corresponding path program 8 times [2024-06-28 01:48:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:13,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740647638] [2024-06-28 01:48:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:13,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:14,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740647638] [2024-06-28 01:48:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740647638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:14,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:14,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:14,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158746541] [2024-06-28 01:48:14,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:14,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:14,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:14,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:14,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:14,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:14,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 553 transitions, 9010 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:14,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:14,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:14,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:16,188 INFO L124 PetriNetUnfolderBase]: 2976/4977 cut-off events. [2024-06-28 01:48:16,188 INFO L125 PetriNetUnfolderBase]: For 267813/267813 co-relation queries the response was YES. [2024-06-28 01:48:16,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39755 conditions, 4977 events. 2976/4977 cut-off events. For 267813/267813 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32143 event pairs, 787 based on Foata normal form. 2/4922 useless extension candidates. Maximal degree in co-relation 39574. Up to 4318 conditions per place. [2024-06-28 01:48:16,262 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 473 selfloop transitions, 126 changer transitions 0/605 dead transitions. [2024-06-28 01:48:16,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 605 transitions, 10994 flow [2024-06-28 01:48:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:48:16,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 01:48:16,263 INFO L175 Difference]: Start difference. First operand has 380 places, 553 transitions, 9010 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:48:16,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 605 transitions, 10994 flow [2024-06-28 01:48:17,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 605 transitions, 10729 flow, removed 85 selfloop flow, removed 5 redundant places. [2024-06-28 01:48:17,683 INFO L231 Difference]: Finished difference. Result has 387 places, 565 transitions, 9485 flow [2024-06-28 01:48:17,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8745, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9485, PETRI_PLACES=387, PETRI_TRANSITIONS=565} [2024-06-28 01:48:17,683 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 347 predicate places. [2024-06-28 01:48:17,683 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 565 transitions, 9485 flow [2024-06-28 01:48:17,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:17,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:17,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:17,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:48:17,684 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:17,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:17,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1082691414, now seen corresponding path program 2 times [2024-06-28 01:48:17,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:17,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559584469] [2024-06-28 01:48:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:17,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:18,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:18,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559584469] [2024-06-28 01:48:18,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559584469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:18,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:18,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:18,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706603231] [2024-06-28 01:48:18,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:18,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:18,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:18,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:18,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 565 transitions, 9485 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:18,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:18,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:18,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:20,177 INFO L124 PetriNetUnfolderBase]: 2982/4974 cut-off events. [2024-06-28 01:48:20,178 INFO L125 PetriNetUnfolderBase]: For 264362/264362 co-relation queries the response was YES. [2024-06-28 01:48:20,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39902 conditions, 4974 events. 2982/4974 cut-off events. For 264362/264362 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32018 event pairs, 810 based on Foata normal form. 1/4922 useless extension candidates. Maximal degree in co-relation 39719. Up to 4436 conditions per place. [2024-06-28 01:48:20,256 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 491 selfloop transitions, 112 changer transitions 0/609 dead transitions. [2024-06-28 01:48:20,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 609 transitions, 11143 flow [2024-06-28 01:48:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:48:20,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 01:48:20,258 INFO L175 Difference]: Start difference. First operand has 387 places, 565 transitions, 9485 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:48:20,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 609 transitions, 11143 flow [2024-06-28 01:48:21,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 609 transitions, 10797 flow, removed 103 selfloop flow, removed 7 redundant places. [2024-06-28 01:48:21,601 INFO L231 Difference]: Finished difference. Result has 391 places, 571 transitions, 9665 flow [2024-06-28 01:48:21,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9143, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9665, PETRI_PLACES=391, PETRI_TRANSITIONS=571} [2024-06-28 01:48:21,601 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 351 predicate places. [2024-06-28 01:48:21,602 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 571 transitions, 9665 flow [2024-06-28 01:48:21,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:21,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:21,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:21,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:48:21,602 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:21,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1493931959, now seen corresponding path program 9 times [2024-06-28 01:48:21,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:21,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880902409] [2024-06-28 01:48:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:22,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:22,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880902409] [2024-06-28 01:48:22,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880902409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:22,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:22,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:22,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574595389] [2024-06-28 01:48:22,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:22,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:22,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:22,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:22,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 571 transitions, 9665 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:22,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:22,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:22,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:24,200 INFO L124 PetriNetUnfolderBase]: 2979/4969 cut-off events. [2024-06-28 01:48:24,200 INFO L125 PetriNetUnfolderBase]: For 256020/256020 co-relation queries the response was YES. [2024-06-28 01:48:24,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39592 conditions, 4969 events. 2979/4969 cut-off events. For 256020/256020 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 31996 event pairs, 806 based on Foata normal form. 2/4918 useless extension candidates. Maximal degree in co-relation 39407. Up to 4409 conditions per place. [2024-06-28 01:48:24,279 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 480 selfloop transitions, 124 changer transitions 0/610 dead transitions. [2024-06-28 01:48:24,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 610 transitions, 11055 flow [2024-06-28 01:48:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:48:24,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:48:24,280 INFO L175 Difference]: Start difference. First operand has 391 places, 571 transitions, 9665 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:48:24,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 610 transitions, 11055 flow [2024-06-28 01:48:25,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 610 transitions, 10551 flow, removed 169 selfloop flow, removed 7 redundant places. [2024-06-28 01:48:25,597 INFO L231 Difference]: Finished difference. Result has 395 places, 571 transitions, 9425 flow [2024-06-28 01:48:25,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9161, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9425, PETRI_PLACES=395, PETRI_TRANSITIONS=571} [2024-06-28 01:48:25,598 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 355 predicate places. [2024-06-28 01:48:25,598 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 571 transitions, 9425 flow [2024-06-28 01:48:25,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:25,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:25,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:25,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:48:25,598 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:25,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:25,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1638032235, now seen corresponding path program 2 times [2024-06-28 01:48:25,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:25,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753741093] [2024-06-28 01:48:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:25,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753741093] [2024-06-28 01:48:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753741093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006385888] [2024-06-28 01:48:26,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:26,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:26,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:26,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:26,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 571 transitions, 9425 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:26,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:26,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:26,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:28,358 INFO L124 PetriNetUnfolderBase]: 3083/5153 cut-off events. [2024-06-28 01:48:28,358 INFO L125 PetriNetUnfolderBase]: For 305330/305330 co-relation queries the response was YES. [2024-06-28 01:48:28,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41136 conditions, 5153 events. 3083/5153 cut-off events. For 305330/305330 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 33560 event pairs, 852 based on Foata normal form. 10/5110 useless extension candidates. Maximal degree in co-relation 40950. Up to 4495 conditions per place. [2024-06-28 01:48:28,432 INFO L140 encePairwiseOnDemand]: 20/36 looper letters, 527 selfloop transitions, 87 changer transitions 0/620 dead transitions. [2024-06-28 01:48:28,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 620 transitions, 11111 flow [2024-06-28 01:48:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:48:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:48:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 01:48:28,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:48:28,434 INFO L175 Difference]: Start difference. First operand has 395 places, 571 transitions, 9425 flow. Second operand 12 states and 198 transitions. [2024-06-28 01:48:28,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 620 transitions, 11111 flow [2024-06-28 01:48:29,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 620 transitions, 10836 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 01:48:29,917 INFO L231 Difference]: Finished difference. Result has 397 places, 573 transitions, 9516 flow [2024-06-28 01:48:29,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9150, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9516, PETRI_PLACES=397, PETRI_TRANSITIONS=573} [2024-06-28 01:48:29,918 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 357 predicate places. [2024-06-28 01:48:29,918 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 573 transitions, 9516 flow [2024-06-28 01:48:29,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:29,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:29,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:29,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:48:29,919 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:29,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1823652753, now seen corresponding path program 10 times [2024-06-28 01:48:29,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:29,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345143767] [2024-06-28 01:48:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:29,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:30,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:30,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345143767] [2024-06-28 01:48:30,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345143767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:30,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:30,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:48:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031896971] [2024-06-28 01:48:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:48:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:48:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:48:30,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:30,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 573 transitions, 9516 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:30,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:30,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:30,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:32,296 INFO L124 PetriNetUnfolderBase]: 3163/5297 cut-off events. [2024-06-28 01:48:32,296 INFO L125 PetriNetUnfolderBase]: For 354333/354333 co-relation queries the response was YES. [2024-06-28 01:48:32,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42894 conditions, 5297 events. 3163/5297 cut-off events. For 354333/354333 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 34868 event pairs, 1039 based on Foata normal form. 12/5256 useless extension candidates. Maximal degree in co-relation 42707. Up to 4789 conditions per place. [2024-06-28 01:48:32,510 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 567 selfloop transitions, 43 changer transitions 0/616 dead transitions. [2024-06-28 01:48:32,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 616 transitions, 11184 flow [2024-06-28 01:48:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:32,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:48:32,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 01:48:32,512 INFO L175 Difference]: Start difference. First operand has 397 places, 573 transitions, 9516 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:48:32,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 616 transitions, 11184 flow [2024-06-28 01:48:34,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 616 transitions, 10936 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:34,075 INFO L231 Difference]: Finished difference. Result has 399 places, 575 transitions, 9554 flow [2024-06-28 01:48:34,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9268, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9554, PETRI_PLACES=399, PETRI_TRANSITIONS=575} [2024-06-28 01:48:34,075 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 359 predicate places. [2024-06-28 01:48:34,076 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 575 transitions, 9554 flow [2024-06-28 01:48:34,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:34,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:34,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:34,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:48:34,076 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:34,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:34,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1425453575, now seen corresponding path program 3 times [2024-06-28 01:48:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:34,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869842175] [2024-06-28 01:48:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:34,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869842175] [2024-06-28 01:48:35,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869842175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:35,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:35,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701889358] [2024-06-28 01:48:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:35,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:35,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:35,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:35,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 575 transitions, 9554 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:35,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:35,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:35,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:36,932 INFO L124 PetriNetUnfolderBase]: 3228/5412 cut-off events. [2024-06-28 01:48:36,932 INFO L125 PetriNetUnfolderBase]: For 355729/355729 co-relation queries the response was YES. [2024-06-28 01:48:36,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43828 conditions, 5412 events. 3228/5412 cut-off events. For 355729/355729 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 35767 event pairs, 1051 based on Foata normal form. 10/5369 useless extension candidates. Maximal degree in co-relation 43640. Up to 4784 conditions per place. [2024-06-28 01:48:37,019 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 572 selfloop transitions, 44 changer transitions 0/622 dead transitions. [2024-06-28 01:48:37,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 622 transitions, 11212 flow [2024-06-28 01:48:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:48:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:48:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:48:37,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-06-28 01:48:37,021 INFO L175 Difference]: Start difference. First operand has 399 places, 575 transitions, 9554 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:48:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 622 transitions, 11212 flow [2024-06-28 01:48:38,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 622 transitions, 11004 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:38,802 INFO L231 Difference]: Finished difference. Result has 403 places, 576 transitions, 9583 flow [2024-06-28 01:48:38,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9346, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9583, PETRI_PLACES=403, PETRI_TRANSITIONS=576} [2024-06-28 01:48:38,803 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 363 predicate places. [2024-06-28 01:48:38,803 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 576 transitions, 9583 flow [2024-06-28 01:48:38,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:38,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:38,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:38,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:48:38,813 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:38,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:38,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1218792199, now seen corresponding path program 11 times [2024-06-28 01:48:38,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:38,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176872258] [2024-06-28 01:48:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:38,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:39,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:39,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176872258] [2024-06-28 01:48:39,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176872258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:39,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:39,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:39,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971673716] [2024-06-28 01:48:39,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:39,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:39,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:39,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:39,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 576 transitions, 9583 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:39,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:39,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:39,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:41,383 INFO L124 PetriNetUnfolderBase]: 3243/5433 cut-off events. [2024-06-28 01:48:41,384 INFO L125 PetriNetUnfolderBase]: For 312815/312815 co-relation queries the response was YES. [2024-06-28 01:48:41,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43673 conditions, 5433 events. 3243/5433 cut-off events. For 312815/312815 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 35863 event pairs, 913 based on Foata normal form. 2/5381 useless extension candidates. Maximal degree in co-relation 43484. Up to 4924 conditions per place. [2024-06-28 01:48:41,472 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 518 selfloop transitions, 94 changer transitions 0/618 dead transitions. [2024-06-28 01:48:41,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 618 transitions, 11203 flow [2024-06-28 01:48:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:48:41,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:48:41,473 INFO L175 Difference]: Start difference. First operand has 403 places, 576 transitions, 9583 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:48:41,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 618 transitions, 11203 flow [2024-06-28 01:48:43,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 618 transitions, 11028 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-06-28 01:48:43,275 INFO L231 Difference]: Finished difference. Result has 404 places, 578 transitions, 9801 flow [2024-06-28 01:48:43,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9408, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9801, PETRI_PLACES=404, PETRI_TRANSITIONS=578} [2024-06-28 01:48:43,275 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 364 predicate places. [2024-06-28 01:48:43,276 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 578 transitions, 9801 flow [2024-06-28 01:48:43,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:43,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:43,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:43,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:48:43,276 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:43,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1823929459, now seen corresponding path program 4 times [2024-06-28 01:48:43,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:43,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752732286] [2024-06-28 01:48:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:43,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:43,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752732286] [2024-06-28 01:48:43,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752732286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:43,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:43,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:48:43,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692752419] [2024-06-28 01:48:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:43,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:48:43,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:48:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:48:44,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:44,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 578 transitions, 9801 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:44,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:44,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:44,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:45,768 INFO L124 PetriNetUnfolderBase]: 3389/5695 cut-off events. [2024-06-28 01:48:45,768 INFO L125 PetriNetUnfolderBase]: For 430119/430119 co-relation queries the response was YES. [2024-06-28 01:48:45,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47636 conditions, 5695 events. 3389/5695 cut-off events. For 430119/430119 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 38212 event pairs, 1086 based on Foata normal form. 8/5650 useless extension candidates. Maximal degree in co-relation 47446. Up to 4771 conditions per place. [2024-06-28 01:48:45,859 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 576 selfloop transitions, 44 changer transitions 0/626 dead transitions. [2024-06-28 01:48:45,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 626 transitions, 11881 flow [2024-06-28 01:48:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:48:45,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 01:48:45,861 INFO L175 Difference]: Start difference. First operand has 404 places, 578 transitions, 9801 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:48:45,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 626 transitions, 11881 flow [2024-06-28 01:48:47,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 626 transitions, 11504 flow, removed 96 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:47,662 INFO L231 Difference]: Finished difference. Result has 406 places, 580 transitions, 9802 flow [2024-06-28 01:48:47,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9424, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9802, PETRI_PLACES=406, PETRI_TRANSITIONS=580} [2024-06-28 01:48:47,662 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 366 predicate places. [2024-06-28 01:48:47,662 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 580 transitions, 9802 flow [2024-06-28 01:48:47,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:47,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:47,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:47,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:48:47,663 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:47,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2041506709, now seen corresponding path program 12 times [2024-06-28 01:48:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:47,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184001246] [2024-06-28 01:48:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:47,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:48,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184001246] [2024-06-28 01:48:48,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184001246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:48,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:48,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147141074] [2024-06-28 01:48:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:48,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:48,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:48,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:48,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 580 transitions, 9802 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:48,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:48,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:48,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:50,417 INFO L124 PetriNetUnfolderBase]: 3404/5728 cut-off events. [2024-06-28 01:48:50,417 INFO L125 PetriNetUnfolderBase]: For 411973/411973 co-relation queries the response was YES. [2024-06-28 01:48:50,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47722 conditions, 5728 events. 3404/5728 cut-off events. For 411973/411973 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 38327 event pairs, 917 based on Foata normal form. 2/5672 useless extension candidates. Maximal degree in co-relation 47531. Up to 4511 conditions per place. [2024-06-28 01:48:50,512 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 486 selfloop transitions, 138 changer transitions 0/630 dead transitions. [2024-06-28 01:48:50,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 630 transitions, 11911 flow [2024-06-28 01:48:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:48:50,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823232323232323 [2024-06-28 01:48:50,514 INFO L175 Difference]: Start difference. First operand has 406 places, 580 transitions, 9802 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:48:50,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 630 transitions, 11911 flow [2024-06-28 01:48:52,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 630 transitions, 11753 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 01:48:52,588 INFO L231 Difference]: Finished difference. Result has 410 places, 582 transitions, 10131 flow [2024-06-28 01:48:52,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9644, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10131, PETRI_PLACES=410, PETRI_TRANSITIONS=582} [2024-06-28 01:48:52,589 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 370 predicate places. [2024-06-28 01:48:52,589 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 582 transitions, 10131 flow [2024-06-28 01:48:52,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:52,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:52,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:48:52,590 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:52,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2035929003, now seen corresponding path program 5 times [2024-06-28 01:48:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444626787] [2024-06-28 01:48:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:53,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444626787] [2024-06-28 01:48:53,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444626787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:53,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:53,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494730160] [2024-06-28 01:48:53,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:53,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:53,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:53,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:53,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:53,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 582 transitions, 10131 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:53,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:53,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:53,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:55,613 INFO L124 PetriNetUnfolderBase]: 3469/5843 cut-off events. [2024-06-28 01:48:55,613 INFO L125 PetriNetUnfolderBase]: For 464946/464946 co-relation queries the response was YES. [2024-06-28 01:48:55,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49283 conditions, 5843 events. 3469/5843 cut-off events. For 464946/464946 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 39345 event pairs, 935 based on Foata normal form. 10/5795 useless extension candidates. Maximal degree in co-relation 49090. Up to 4537 conditions per place. [2024-06-28 01:48:55,707 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 498 selfloop transitions, 136 changer transitions 0/640 dead transitions. [2024-06-28 01:48:55,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 640 transitions, 12312 flow [2024-06-28 01:48:55,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:48:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:48:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-28 01:48:55,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:48:55,708 INFO L175 Difference]: Start difference. First operand has 410 places, 582 transitions, 10131 flow. Second operand 12 states and 210 transitions. [2024-06-28 01:48:55,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 640 transitions, 12312 flow [2024-06-28 01:48:57,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 640 transitions, 11841 flow, removed 99 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:57,531 INFO L231 Difference]: Finished difference. Result has 413 places, 583 transitions, 10087 flow [2024-06-28 01:48:57,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9660, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10087, PETRI_PLACES=413, PETRI_TRANSITIONS=583} [2024-06-28 01:48:57,532 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 373 predicate places. [2024-06-28 01:48:57,532 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 583 transitions, 10087 flow [2024-06-28 01:48:57,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:57,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:57,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:57,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:48:57,532 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:57,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1218642469, now seen corresponding path program 13 times [2024-06-28 01:48:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703615012] [2024-06-28 01:48:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:58,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:58,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703615012] [2024-06-28 01:48:58,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703615012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:58,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:58,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:58,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325762597] [2024-06-28 01:48:58,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:58,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:58,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:58,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:58,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:58,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:48:58,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 583 transitions, 10087 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:58,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:58,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:48:58,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:00,293 INFO L124 PetriNetUnfolderBase]: 3484/5856 cut-off events. [2024-06-28 01:49:00,293 INFO L125 PetriNetUnfolderBase]: For 438589/438589 co-relation queries the response was YES. [2024-06-28 01:49:00,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49439 conditions, 5856 events. 3484/5856 cut-off events. For 438589/438589 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 39470 event pairs, 1050 based on Foata normal form. 2/5804 useless extension candidates. Maximal degree in co-relation 49245. Up to 5347 conditions per place. [2024-06-28 01:49:00,382 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 528 selfloop transitions, 91 changer transitions 0/625 dead transitions. [2024-06-28 01:49:00,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 625 transitions, 11729 flow [2024-06-28 01:49:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:49:00,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 01:49:00,384 INFO L175 Difference]: Start difference. First operand has 413 places, 583 transitions, 10087 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:49:00,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 625 transitions, 11729 flow [2024-06-28 01:49:02,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 625 transitions, 11358 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-28 01:49:02,553 INFO L231 Difference]: Finished difference. Result has 414 places, 585 transitions, 10115 flow [2024-06-28 01:49:02,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9716, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10115, PETRI_PLACES=414, PETRI_TRANSITIONS=585} [2024-06-28 01:49:02,553 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 374 predicate places. [2024-06-28 01:49:02,553 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 585 transitions, 10115 flow [2024-06-28 01:49:02,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:02,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:02,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:02,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:49:02,554 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:02,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1418093989, now seen corresponding path program 14 times [2024-06-28 01:49:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:02,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225266439] [2024-06-28 01:49:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:03,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:03,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225266439] [2024-06-28 01:49:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225266439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:03,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:03,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:03,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495192415] [2024-06-28 01:49:03,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:03,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:03,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:03,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:03,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:03,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:03,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 585 transitions, 10115 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:03,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:03,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:03,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:05,383 INFO L124 PetriNetUnfolderBase]: 3481/5855 cut-off events. [2024-06-28 01:49:05,384 INFO L125 PetriNetUnfolderBase]: For 409221/409221 co-relation queries the response was YES. [2024-06-28 01:49:05,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48593 conditions, 5855 events. 3481/5855 cut-off events. For 409221/409221 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 39600 event pairs, 1244 based on Foata normal form. 2/5804 useless extension candidates. Maximal degree in co-relation 48398. Up to 5467 conditions per place. [2024-06-28 01:49:05,469 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 574 selfloop transitions, 44 changer transitions 0/624 dead transitions. [2024-06-28 01:49:05,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 624 transitions, 11741 flow [2024-06-28 01:49:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:49:05,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:49:05,471 INFO L175 Difference]: Start difference. First operand has 414 places, 585 transitions, 10115 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:49:05,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 624 transitions, 11741 flow [2024-06-28 01:49:07,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 624 transitions, 11358 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-06-28 01:49:07,394 INFO L231 Difference]: Finished difference. Result has 416 places, 587 transitions, 10031 flow [2024-06-28 01:49:07,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9732, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10031, PETRI_PLACES=416, PETRI_TRANSITIONS=587} [2024-06-28 01:49:07,395 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 376 predicate places. [2024-06-28 01:49:07,395 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 587 transitions, 10031 flow [2024-06-28 01:49:07,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:07,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:07,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:07,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:49:07,396 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:07,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1418303735, now seen corresponding path program 6 times [2024-06-28 01:49:07,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:07,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393811149] [2024-06-28 01:49:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:08,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:08,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393811149] [2024-06-28 01:49:08,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393811149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:08,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:08,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347982627] [2024-06-28 01:49:08,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:08,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:08,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:08,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 587 transitions, 10031 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:08,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:08,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:08,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:10,500 INFO L124 PetriNetUnfolderBase]: 3510/5910 cut-off events. [2024-06-28 01:49:10,500 INFO L125 PetriNetUnfolderBase]: For 435495/435495 co-relation queries the response was YES. [2024-06-28 01:49:10,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48383 conditions, 5910 events. 3510/5910 cut-off events. For 435495/435495 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 40109 event pairs, 1232 based on Foata normal form. 10/5867 useless extension candidates. Maximal degree in co-relation 48187. Up to 5402 conditions per place. [2024-06-28 01:49:10,582 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 583 selfloop transitions, 45 changer transitions 0/634 dead transitions. [2024-06-28 01:49:10,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 634 transitions, 11717 flow [2024-06-28 01:49:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-28 01:49:10,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:49:10,584 INFO L175 Difference]: Start difference. First operand has 416 places, 587 transitions, 10031 flow. Second operand 12 states and 200 transitions. [2024-06-28 01:49:10,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 634 transitions, 11717 flow [2024-06-28 01:49:12,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 634 transitions, 11436 flow, removed 98 selfloop flow, removed 9 redundant places. [2024-06-28 01:49:12,634 INFO L231 Difference]: Finished difference. Result has 419 places, 588 transitions, 9992 flow [2024-06-28 01:49:12,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9750, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9992, PETRI_PLACES=419, PETRI_TRANSITIONS=588} [2024-06-28 01:49:12,635 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 379 predicate places. [2024-06-28 01:49:12,635 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 588 transitions, 9992 flow [2024-06-28 01:49:12,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:12,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:12,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:12,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:49:12,636 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:12,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1816295523, now seen corresponding path program 15 times [2024-06-28 01:49:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:12,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377551591] [2024-06-28 01:49:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:12,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:13,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:13,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377551591] [2024-06-28 01:49:13,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377551591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:13,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:13,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:49:13,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017849667] [2024-06-28 01:49:13,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:13,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:49:13,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:49:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:49:13,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:13,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 588 transitions, 9992 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:13,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:13,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:13,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:15,201 INFO L124 PetriNetUnfolderBase]: 3525/5935 cut-off events. [2024-06-28 01:49:15,202 INFO L125 PetriNetUnfolderBase]: For 405342/405342 co-relation queries the response was YES. [2024-06-28 01:49:15,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48536 conditions, 5935 events. 3525/5935 cut-off events. For 405342/405342 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 40311 event pairs, 1231 based on Foata normal form. 2/5884 useless extension candidates. Maximal degree in co-relation 48339. Up to 5368 conditions per place. [2024-06-28 01:49:15,302 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 576 selfloop transitions, 49 changer transitions 0/631 dead transitions. [2024-06-28 01:49:15,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 631 transitions, 11712 flow [2024-06-28 01:49:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:49:15,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 01:49:15,304 INFO L175 Difference]: Start difference. First operand has 419 places, 588 transitions, 9992 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:49:15,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 631 transitions, 11712 flow [2024-06-28 01:49:17,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 631 transitions, 11528 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-06-28 01:49:17,840 INFO L231 Difference]: Finished difference. Result has 420 places, 590 transitions, 10129 flow [2024-06-28 01:49:17,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9808, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10129, PETRI_PLACES=420, PETRI_TRANSITIONS=590} [2024-06-28 01:49:17,840 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 380 predicate places. [2024-06-28 01:49:17,840 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 590 transitions, 10129 flow [2024-06-28 01:49:17,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:17,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:17,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:17,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:49:17,841 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:17,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash 448430131, now seen corresponding path program 16 times [2024-06-28 01:49:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324286498] [2024-06-28 01:49:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324286498] [2024-06-28 01:49:18,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324286498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:18,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:18,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:18,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557941190] [2024-06-28 01:49:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:18,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:18,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 590 transitions, 10129 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:18,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:18,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:20,490 INFO L124 PetriNetUnfolderBase]: 3565/6005 cut-off events. [2024-06-28 01:49:20,490 INFO L125 PetriNetUnfolderBase]: For 400811/400811 co-relation queries the response was YES. [2024-06-28 01:49:20,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49013 conditions, 6005 events. 3565/6005 cut-off events. For 400811/400811 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 40782 event pairs, 994 based on Foata normal form. 2/5954 useless extension candidates. Maximal degree in co-relation 48815. Up to 5216 conditions per place. [2024-06-28 01:49:20,586 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 531 selfloop transitions, 108 changer transitions 0/645 dead transitions. [2024-06-28 01:49:20,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 645 transitions, 11971 flow [2024-06-28 01:49:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:49:20,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 01:49:20,587 INFO L175 Difference]: Start difference. First operand has 420 places, 590 transitions, 10129 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:49:20,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 645 transitions, 11971 flow [2024-06-28 01:49:22,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 645 transitions, 11666 flow, removed 105 selfloop flow, removed 9 redundant places. [2024-06-28 01:49:22,865 INFO L231 Difference]: Finished difference. Result has 423 places, 610 transitions, 10546 flow [2024-06-28 01:49:22,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9824, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10546, PETRI_PLACES=423, PETRI_TRANSITIONS=610} [2024-06-28 01:49:22,866 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 383 predicate places. [2024-06-28 01:49:22,866 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 610 transitions, 10546 flow [2024-06-28 01:49:22,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:22,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:22,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:22,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:49:22,866 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:22,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:22,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1210777448, now seen corresponding path program 3 times [2024-06-28 01:49:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168349353] [2024-06-28 01:49:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:22,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:23,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168349353] [2024-06-28 01:49:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168349353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:23,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073782980] [2024-06-28 01:49:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:24,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:24,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 610 transitions, 10546 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:24,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:24,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:24,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:25,848 INFO L124 PetriNetUnfolderBase]: 3571/6039 cut-off events. [2024-06-28 01:49:25,848 INFO L125 PetriNetUnfolderBase]: For 395061/395061 co-relation queries the response was YES. [2024-06-28 01:49:25,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49422 conditions, 6039 events. 3571/6039 cut-off events. For 395061/395061 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 41296 event pairs, 976 based on Foata normal form. 1/5983 useless extension candidates. Maximal degree in co-relation 49221. Up to 5128 conditions per place. [2024-06-28 01:49:25,952 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 447 selfloop transitions, 201 changer transitions 0/654 dead transitions. [2024-06-28 01:49:25,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 654 transitions, 12593 flow [2024-06-28 01:49:25,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:49:25,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 01:49:25,954 INFO L175 Difference]: Start difference. First operand has 423 places, 610 transitions, 10546 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:49:25,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 654 transitions, 12593 flow [2024-06-28 01:49:28,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 654 transitions, 12233 flow, removed 118 selfloop flow, removed 5 redundant places. [2024-06-28 01:49:28,469 INFO L231 Difference]: Finished difference. Result has 429 places, 618 transitions, 11265 flow [2024-06-28 01:49:28,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10194, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11265, PETRI_PLACES=429, PETRI_TRANSITIONS=618} [2024-06-28 01:49:28,470 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 389 predicate places. [2024-06-28 01:49:28,470 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 618 transitions, 11265 flow [2024-06-28 01:49:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:28,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:28,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:28,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:49:28,470 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:28,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 507566041, now seen corresponding path program 17 times [2024-06-28 01:49:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:28,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909179237] [2024-06-28 01:49:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:28,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:29,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:29,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909179237] [2024-06-28 01:49:29,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909179237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:29,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:29,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:29,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776958068] [2024-06-28 01:49:29,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:29,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:29,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:29,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 618 transitions, 11265 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:29,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:29,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:29,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:31,131 INFO L124 PetriNetUnfolderBase]: 3586/6058 cut-off events. [2024-06-28 01:49:31,131 INFO L125 PetriNetUnfolderBase]: For 409420/409420 co-relation queries the response was YES. [2024-06-28 01:49:31,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50309 conditions, 6058 events. 3586/6058 cut-off events. For 409420/409420 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 41438 event pairs, 990 based on Foata normal form. 2/6003 useless extension candidates. Maximal degree in co-relation 50106. Up to 5169 conditions per place. [2024-06-28 01:49:31,232 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 459 selfloop transitions, 191 changer transitions 0/656 dead transitions. [2024-06-28 01:49:31,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 656 transitions, 12967 flow [2024-06-28 01:49:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:49:31,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:49:31,233 INFO L175 Difference]: Start difference. First operand has 429 places, 618 transitions, 11265 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:49:31,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 656 transitions, 12967 flow [2024-06-28 01:49:34,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 656 transitions, 12283 flow, removed 249 selfloop flow, removed 6 redundant places. [2024-06-28 01:49:34,208 INFO L231 Difference]: Finished difference. Result has 433 places, 620 transitions, 11223 flow [2024-06-28 01:49:34,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10581, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11223, PETRI_PLACES=433, PETRI_TRANSITIONS=620} [2024-06-28 01:49:34,208 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 393 predicate places. [2024-06-28 01:49:34,208 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 620 transitions, 11223 flow [2024-06-28 01:49:34,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:34,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:34,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:49:34,209 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:34,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2084523925, now seen corresponding path program 18 times [2024-06-28 01:49:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:34,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702606220] [2024-06-28 01:49:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:34,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:34,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:34,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702606220] [2024-06-28 01:49:34,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702606220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:34,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:34,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:34,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006307082] [2024-06-28 01:49:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:34,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:34,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:34,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:34,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:35,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:35,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 620 transitions, 11223 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:35,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:35,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:35,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:37,264 INFO L124 PetriNetUnfolderBase]: 3622/6116 cut-off events. [2024-06-28 01:49:37,265 INFO L125 PetriNetUnfolderBase]: For 419181/419181 co-relation queries the response was YES. [2024-06-28 01:49:37,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51269 conditions, 6116 events. 3622/6116 cut-off events. For 419181/419181 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 41918 event pairs, 958 based on Foata normal form. 2/6061 useless extension candidates. Maximal degree in co-relation 51064. Up to 5111 conditions per place. [2024-06-28 01:49:37,366 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 507 selfloop transitions, 159 changer transitions 0/672 dead transitions. [2024-06-28 01:49:37,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 672 transitions, 13308 flow [2024-06-28 01:49:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:49:37,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:49:37,367 INFO L175 Difference]: Start difference. First operand has 433 places, 620 transitions, 11223 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:49:37,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 672 transitions, 13308 flow [2024-06-28 01:49:40,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 672 transitions, 12500 flow, removed 217 selfloop flow, removed 9 redundant places. [2024-06-28 01:49:40,031 INFO L231 Difference]: Finished difference. Result has 435 places, 636 transitions, 11398 flow [2024-06-28 01:49:40,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10633, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11398, PETRI_PLACES=435, PETRI_TRANSITIONS=636} [2024-06-28 01:49:40,032 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 395 predicate places. [2024-06-28 01:49:40,032 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 636 transitions, 11398 flow [2024-06-28 01:49:40,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:40,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:40,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:40,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:49:40,032 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:40,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 507416311, now seen corresponding path program 19 times [2024-06-28 01:49:40,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:40,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626841488] [2024-06-28 01:49:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:40,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:40,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:40,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626841488] [2024-06-28 01:49:40,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626841488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:40,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:40,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:40,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217526909] [2024-06-28 01:49:40,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:40,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:40,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:40,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:40,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 636 transitions, 11398 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:40,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:40,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:40,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:42,995 INFO L124 PetriNetUnfolderBase]: 3637/6127 cut-off events. [2024-06-28 01:49:42,995 INFO L125 PetriNetUnfolderBase]: For 423225/423225 co-relation queries the response was YES. [2024-06-28 01:49:43,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51361 conditions, 6127 events. 3637/6127 cut-off events. For 423225/423225 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 41936 event pairs, 1011 based on Foata normal form. 2/6076 useless extension candidates. Maximal degree in co-relation 51155. Up to 5402 conditions per place. [2024-06-28 01:49:43,114 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 555 selfloop transitions, 113 changer transitions 0/674 dead transitions. [2024-06-28 01:49:43,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 674 transitions, 13140 flow [2024-06-28 01:49:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:49:43,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:49:43,116 INFO L175 Difference]: Start difference. First operand has 435 places, 636 transitions, 11398 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:49:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 674 transitions, 13140 flow [2024-06-28 01:49:45,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 674 transitions, 12656 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-06-28 01:49:45,639 INFO L231 Difference]: Finished difference. Result has 438 places, 638 transitions, 11394 flow [2024-06-28 01:49:45,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10914, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11394, PETRI_PLACES=438, PETRI_TRANSITIONS=638} [2024-06-28 01:49:45,640 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 398 predicate places. [2024-06-28 01:49:45,640 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 638 transitions, 11394 flow [2024-06-28 01:49:45,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:45,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:45,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:45,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:49:45,641 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:45,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:45,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1066677389, now seen corresponding path program 7 times [2024-06-28 01:49:45,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:45,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236983559] [2024-06-28 01:49:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:45,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:46,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:46,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236983559] [2024-06-28 01:49:46,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236983559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:46,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:46,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:46,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833786207] [2024-06-28 01:49:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:46,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:46,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:46,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:46,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:46,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:46,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 638 transitions, 11394 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:46,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:46,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:46,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:48,611 INFO L124 PetriNetUnfolderBase]: 3732/6287 cut-off events. [2024-06-28 01:49:48,611 INFO L125 PetriNetUnfolderBase]: For 489930/489930 co-relation queries the response was YES. [2024-06-28 01:49:48,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52656 conditions, 6287 events. 3732/6287 cut-off events. For 489930/489930 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 43183 event pairs, 907 based on Foata normal form. 10/6244 useless extension candidates. Maximal degree in co-relation 52449. Up to 5088 conditions per place. [2024-06-28 01:49:48,723 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 561 selfloop transitions, 121 changer transitions 0/688 dead transitions. [2024-06-28 01:49:48,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 688 transitions, 13242 flow [2024-06-28 01:49:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:49:48,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 01:49:48,724 INFO L175 Difference]: Start difference. First operand has 438 places, 638 transitions, 11394 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:49:48,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 688 transitions, 13242 flow [2024-06-28 01:49:51,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 688 transitions, 12808 flow, removed 111 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:51,467 INFO L231 Difference]: Finished difference. Result has 441 places, 641 transitions, 11417 flow [2024-06-28 01:49:51,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10960, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11417, PETRI_PLACES=441, PETRI_TRANSITIONS=641} [2024-06-28 01:49:51,467 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 401 predicate places. [2024-06-28 01:49:51,467 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 641 transitions, 11417 flow [2024-06-28 01:49:51,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:51,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:51,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:51,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:49:51,468 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:51,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:51,468 INFO L85 PathProgramCache]: Analyzing trace with hash -881056871, now seen corresponding path program 20 times [2024-06-28 01:49:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966695570] [2024-06-28 01:49:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:51,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966695570] [2024-06-28 01:49:52,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966695570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:52,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:52,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:52,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17790873] [2024-06-28 01:49:52,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:52,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:52,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:52,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 641 transitions, 11417 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:52,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:52,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:52,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:54,428 INFO L124 PetriNetUnfolderBase]: 3812/6431 cut-off events. [2024-06-28 01:49:54,429 INFO L125 PetriNetUnfolderBase]: For 545281/545281 co-relation queries the response was YES. [2024-06-28 01:49:54,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54455 conditions, 6431 events. 3812/6431 cut-off events. For 545281/545281 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 44572 event pairs, 1194 based on Foata normal form. 12/6390 useless extension candidates. Maximal degree in co-relation 54247. Up to 5627 conditions per place. [2024-06-28 01:49:54,533 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 608 selfloop transitions, 67 changer transitions 0/681 dead transitions. [2024-06-28 01:49:54,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 681 transitions, 13257 flow [2024-06-28 01:49:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:49:54,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:49:54,535 INFO L175 Difference]: Start difference. First operand has 441 places, 641 transitions, 11417 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:49:54,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 681 transitions, 13257 flow [2024-06-28 01:49:57,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 681 transitions, 12925 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-28 01:49:57,243 INFO L231 Difference]: Finished difference. Result has 442 places, 643 transitions, 11473 flow [2024-06-28 01:49:57,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11085, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11473, PETRI_PLACES=442, PETRI_TRANSITIONS=643} [2024-06-28 01:49:57,244 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 402 predicate places. [2024-06-28 01:49:57,244 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 643 transitions, 11473 flow [2024-06-28 01:49:57,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:57,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:57,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:57,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:49:57,244 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:57,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1722545491, now seen corresponding path program 8 times [2024-06-28 01:49:57,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:57,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647898074] [2024-06-28 01:49:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:57,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647898074] [2024-06-28 01:49:57,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647898074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:57,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:57,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:49:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344350043] [2024-06-28 01:49:57,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:57,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:49:57,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:49:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:49:57,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:49:57,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 643 transitions, 11473 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:57,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:57,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:49:57,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:00,108 INFO L124 PetriNetUnfolderBase]: 3958/6689 cut-off events. [2024-06-28 01:50:00,108 INFO L125 PetriNetUnfolderBase]: For 640486/640486 co-relation queries the response was YES. [2024-06-28 01:50:00,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58649 conditions, 6689 events. 3958/6689 cut-off events. For 640486/640486 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 46609 event pairs, 1162 based on Foata normal form. 8/6644 useless extension candidates. Maximal degree in co-relation 58440. Up to 5114 conditions per place. [2024-06-28 01:50:00,230 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 612 selfloop transitions, 70 changer transitions 0/688 dead transitions. [2024-06-28 01:50:00,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 688 transitions, 13761 flow [2024-06-28 01:50:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:50:00,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:50:00,232 INFO L175 Difference]: Start difference. First operand has 442 places, 643 transitions, 11473 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:50:00,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 688 transitions, 13761 flow [2024-06-28 01:50:03,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 688 transitions, 13459 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:03,410 INFO L231 Difference]: Finished difference. Result has 444 places, 645 transitions, 11651 flow [2024-06-28 01:50:03,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11171, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11651, PETRI_PLACES=444, PETRI_TRANSITIONS=645} [2024-06-28 01:50:03,416 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 404 predicate places. [2024-06-28 01:50:03,416 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 645 transitions, 11651 flow [2024-06-28 01:50:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:03,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:50:03,417 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:03,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:03,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1087710311, now seen corresponding path program 21 times [2024-06-28 01:50:03,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353712907] [2024-06-28 01:50:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:03,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:04,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:04,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353712907] [2024-06-28 01:50:04,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353712907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:04,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:04,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:04,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926126845] [2024-06-28 01:50:04,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:04,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:04,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:04,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:50:04,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 645 transitions, 11651 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:04,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:04,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:50:04,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:06,664 INFO L124 PetriNetUnfolderBase]: 3973/6710 cut-off events. [2024-06-28 01:50:06,664 INFO L125 PetriNetUnfolderBase]: For 586658/586658 co-relation queries the response was YES. [2024-06-28 01:50:06,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58422 conditions, 6710 events. 3973/6710 cut-off events. For 586658/586658 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 46835 event pairs, 1012 based on Foata normal form. 2/6658 useless extension candidates. Maximal degree in co-relation 58212. Up to 6079 conditions per place. [2024-06-28 01:50:06,774 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 569 selfloop transitions, 108 changer transitions 0/683 dead transitions. [2024-06-28 01:50:06,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 683 transitions, 13439 flow [2024-06-28 01:50:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:50:06,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:50:06,776 INFO L175 Difference]: Start difference. First operand has 444 places, 645 transitions, 11651 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:50:06,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 683 transitions, 13439 flow [2024-06-28 01:50:10,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 683 transitions, 13228 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-28 01:50:10,178 INFO L231 Difference]: Finished difference. Result has 447 places, 647 transitions, 11914 flow [2024-06-28 01:50:10,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11442, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11914, PETRI_PLACES=447, PETRI_TRANSITIONS=647} [2024-06-28 01:50:10,179 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 407 predicate places. [2024-06-28 01:50:10,179 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 647 transitions, 11914 flow [2024-06-28 01:50:10,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:10,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:10,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:10,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:50:10,179 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:10,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1515609765, now seen corresponding path program 22 times [2024-06-28 01:50:10,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:10,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317881064] [2024-06-28 01:50:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:10,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:11,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317881064] [2024-06-28 01:50:11,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317881064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:11,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819534019] [2024-06-28 01:50:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:11,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:11,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:11,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:50:11,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 647 transitions, 11914 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:11,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:11,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:50:11,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:13,247 INFO L124 PetriNetUnfolderBase]: 3988/6735 cut-off events. [2024-06-28 01:50:13,248 INFO L125 PetriNetUnfolderBase]: For 582979/582979 co-relation queries the response was YES. [2024-06-28 01:50:13,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58911 conditions, 6735 events. 3988/6735 cut-off events. For 582979/582979 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 47044 event pairs, 996 based on Foata normal form. 2/6683 useless extension candidates. Maximal degree in co-relation 58700. Up to 6022 conditions per place. [2024-06-28 01:50:13,358 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 565 selfloop transitions, 114 changer transitions 0/685 dead transitions. [2024-06-28 01:50:13,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 685 transitions, 13706 flow [2024-06-28 01:50:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:50:13,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 01:50:13,360 INFO L175 Difference]: Start difference. First operand has 447 places, 647 transitions, 11914 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:50:13,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 685 transitions, 13706 flow [2024-06-28 01:50:16,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 685 transitions, 13262 flow, removed 117 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:16,444 INFO L231 Difference]: Finished difference. Result has 449 places, 649 transitions, 11958 flow [2024-06-28 01:50:16,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11470, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11958, PETRI_PLACES=449, PETRI_TRANSITIONS=649} [2024-06-28 01:50:16,458 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 409 predicate places. [2024-06-28 01:50:16,459 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 649 transitions, 11958 flow [2024-06-28 01:50:16,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:16,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:16,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:16,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:50:16,459 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:16,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:16,459 INFO L85 PathProgramCache]: Analyzing trace with hash -583603691, now seen corresponding path program 23 times [2024-06-28 01:50:16,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:16,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45953231] [2024-06-28 01:50:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:16,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:17,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:17,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45953231] [2024-06-28 01:50:17,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45953231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:17,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:17,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309020246] [2024-06-28 01:50:17,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:17,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:17,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:17,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:17,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:17,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:50:17,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 649 transitions, 11958 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:17,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:17,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:50:17,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:19,574 INFO L124 PetriNetUnfolderBase]: 4003/6760 cut-off events. [2024-06-28 01:50:19,574 INFO L125 PetriNetUnfolderBase]: For 593394/593394 co-relation queries the response was YES. [2024-06-28 01:50:19,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59221 conditions, 6760 events. 4003/6760 cut-off events. For 593394/593394 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 47274 event pairs, 1003 based on Foata normal form. 2/6708 useless extension candidates. Maximal degree in co-relation 59009. Up to 6129 conditions per place. [2024-06-28 01:50:19,694 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 579 selfloop transitions, 102 changer transitions 0/687 dead transitions. [2024-06-28 01:50:19,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 687 transitions, 13756 flow [2024-06-28 01:50:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:50:19,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:50:19,696 INFO L175 Difference]: Start difference. First operand has 449 places, 649 transitions, 11958 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:50:19,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 687 transitions, 13756 flow [2024-06-28 01:50:23,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 687 transitions, 13294 flow, removed 120 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:23,186 INFO L231 Difference]: Finished difference. Result has 451 places, 651 transitions, 11964 flow [2024-06-28 01:50:23,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11496, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11964, PETRI_PLACES=451, PETRI_TRANSITIONS=651} [2024-06-28 01:50:23,187 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 411 predicate places. [2024-06-28 01:50:23,187 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 651 transitions, 11964 flow [2024-06-28 01:50:23,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:23,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:23,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:23,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:50:23,187 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:23,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash -376792585, now seen corresponding path program 9 times [2024-06-28 01:50:23,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350025465] [2024-06-28 01:50:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:23,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:23,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:23,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350025465] [2024-06-28 01:50:23,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350025465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:23,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:23,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:23,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162961217] [2024-06-28 01:50:23,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:23,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:23,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:23,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:24,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:50:24,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 651 transitions, 11964 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:24,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:24,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:50:24,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:26,443 INFO L124 PetriNetUnfolderBase]: 4103/6944 cut-off events. [2024-06-28 01:50:26,444 INFO L125 PetriNetUnfolderBase]: For 709787/709787 co-relation queries the response was YES. [2024-06-28 01:50:26,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60929 conditions, 6944 events. 4103/6944 cut-off events. For 709787/709787 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 48979 event pairs, 1300 based on Foata normal form. 16/6907 useless extension candidates. Maximal degree in co-relation 60716. Up to 5821 conditions per place. [2024-06-28 01:50:26,563 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 622 selfloop transitions, 68 changer transitions 0/696 dead transitions. [2024-06-28 01:50:26,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 696 transitions, 13928 flow [2024-06-28 01:50:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:50:26,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 01:50:26,564 INFO L175 Difference]: Start difference. First operand has 451 places, 651 transitions, 11964 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:50:26,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 696 transitions, 13928 flow [2024-06-28 01:50:30,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 696 transitions, 13486 flow, removed 122 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:30,127 INFO L231 Difference]: Finished difference. Result has 454 places, 653 transitions, 11981 flow [2024-06-28 01:50:30,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11522, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11981, PETRI_PLACES=454, PETRI_TRANSITIONS=653} [2024-06-28 01:50:30,128 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 414 predicate places. [2024-06-28 01:50:30,128 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 653 transitions, 11981 flow [2024-06-28 01:50:30,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:30,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:30,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:30,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:50:30,129 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:30,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash -577881835, now seen corresponding path program 10 times [2024-06-28 01:50:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:30,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798415312] [2024-06-28 01:50:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:30,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:31,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:31,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798415312] [2024-06-28 01:50:31,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798415312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:31,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:31,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:31,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200454479] [2024-06-28 01:50:31,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:31,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:31,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:31,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:31,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:31,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:50:31,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 653 transitions, 11981 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:31,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:31,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:50:31,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:33,736 INFO L124 PetriNetUnfolderBase]: 4203/7133 cut-off events. [2024-06-28 01:50:33,736 INFO L125 PetriNetUnfolderBase]: For 716591/716591 co-relation queries the response was YES. [2024-06-28 01:50:33,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62348 conditions, 7133 events. 4203/7133 cut-off events. For 716591/716591 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 50683 event pairs, 1007 based on Foata normal form. 10/7085 useless extension candidates. Maximal degree in co-relation 62134. Up to 5200 conditions per place. [2024-06-28 01:50:33,863 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 519 selfloop transitions, 182 changer transitions 0/707 dead transitions. [2024-06-28 01:50:33,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 707 transitions, 14417 flow [2024-06-28 01:50:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-28 01:50:33,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48737373737373735 [2024-06-28 01:50:33,865 INFO L175 Difference]: Start difference. First operand has 454 places, 653 transitions, 11981 flow. Second operand 11 states and 193 transitions. [2024-06-28 01:50:33,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 707 transitions, 14417 flow [2024-06-28 01:50:37,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 707 transitions, 14092 flow, removed 101 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:37,936 INFO L231 Difference]: Finished difference. Result has 456 places, 655 transitions, 12256 flow [2024-06-28 01:50:37,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11656, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12256, PETRI_PLACES=456, PETRI_TRANSITIONS=655} [2024-06-28 01:50:37,937 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 416 predicate places. [2024-06-28 01:50:37,937 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 655 transitions, 12256 flow [2024-06-28 01:50:37,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:37,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:37,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:37,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:50:37,938 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:37,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash -888408521, now seen corresponding path program 24 times [2024-06-28 01:50:37,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:37,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532229673] [2024-06-28 01:50:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:37,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:38,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:38,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532229673] [2024-06-28 01:50:38,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532229673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:38,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:38,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230519128] [2024-06-28 01:50:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:38,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:38,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:38,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:50:38,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 655 transitions, 12256 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:38,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:38,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:50:38,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:41,004 INFO L124 PetriNetUnfolderBase]: 4200/7119 cut-off events. [2024-06-28 01:50:41,004 INFO L125 PetriNetUnfolderBase]: For 628352/628352 co-relation queries the response was YES. [2024-06-28 01:50:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61893 conditions, 7119 events. 4200/7119 cut-off events. For 628352/628352 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 50663 event pairs, 1394 based on Foata normal form. 2/7068 useless extension candidates. Maximal degree in co-relation 61678. Up to 6555 conditions per place. [2024-06-28 01:50:41,135 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 616 selfloop transitions, 69 changer transitions 0/691 dead transitions. [2024-06-28 01:50:41,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 691 transitions, 14054 flow [2024-06-28 01:50:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:50:41,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:50:41,136 INFO L175 Difference]: Start difference. First operand has 456 places, 655 transitions, 12256 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:50:41,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 691 transitions, 14054 flow [2024-06-28 01:50:45,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 691 transitions, 13570 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:45,050 INFO L231 Difference]: Finished difference. Result has 457 places, 657 transitions, 12170 flow [2024-06-28 01:50:45,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11772, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12170, PETRI_PLACES=457, PETRI_TRANSITIONS=657} [2024-06-28 01:50:45,050 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 417 predicate places. [2024-06-28 01:50:45,050 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 657 transitions, 12170 flow [2024-06-28 01:50:45,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:45,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:45,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:45,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:50:45,051 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:45,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:45,051 INFO L85 PathProgramCache]: Analyzing trace with hash -384157751, now seen corresponding path program 25 times [2024-06-28 01:50:45,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:45,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466316944] [2024-06-28 01:50:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:45,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:45,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:45,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466316944] [2024-06-28 01:50:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466316944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:45,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:45,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:45,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184939037] [2024-06-28 01:50:45,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:45,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:45,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:45,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:45,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:45,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:50:45,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 657 transitions, 12170 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:45,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:45,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:50:45,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:48,216 INFO L124 PetriNetUnfolderBase]: 4385/7416 cut-off events. [2024-06-28 01:50:48,216 INFO L125 PetriNetUnfolderBase]: For 618737/618737 co-relation queries the response was YES. [2024-06-28 01:50:48,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63943 conditions, 7416 events. 4385/7416 cut-off events. For 618737/618737 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 52909 event pairs, 1456 based on Foata normal form. 2/7364 useless extension candidates. Maximal degree in co-relation 63727. Up to 6652 conditions per place. [2024-06-28 01:50:48,354 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 644 selfloop transitions, 81 changer transitions 0/731 dead transitions. [2024-06-28 01:50:48,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 731 transitions, 14744 flow [2024-06-28 01:50:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:50:48,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-28 01:50:48,356 INFO L175 Difference]: Start difference. First operand has 457 places, 657 transitions, 12170 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:50:48,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 731 transitions, 14744 flow [2024-06-28 01:50:52,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 731 transitions, 14321 flow, removed 119 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:52,461 INFO L231 Difference]: Finished difference. Result has 464 places, 692 transitions, 12923 flow [2024-06-28 01:50:52,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11800, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12923, PETRI_PLACES=464, PETRI_TRANSITIONS=692} [2024-06-28 01:50:52,474 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 424 predicate places. [2024-06-28 01:50:52,474 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 692 transitions, 12923 flow [2024-06-28 01:50:52,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:52,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:52,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:52,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:50:52,477 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:52,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:52,477 INFO L85 PathProgramCache]: Analyzing trace with hash -888198775, now seen corresponding path program 11 times [2024-06-28 01:50:52,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:52,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125553811] [2024-06-28 01:50:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125553811] [2024-06-28 01:50:53,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125553811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:53,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:53,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:53,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978399249] [2024-06-28 01:50:53,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:53,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:53,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:50:53,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 692 transitions, 12923 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:53,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:53,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:50:53,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:55,605 INFO L124 PetriNetUnfolderBase]: 4365/7380 cut-off events. [2024-06-28 01:50:55,606 INFO L125 PetriNetUnfolderBase]: For 604452/604452 co-relation queries the response was YES. [2024-06-28 01:50:55,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61978 conditions, 7380 events. 4365/7380 cut-off events. For 604452/604452 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 52649 event pairs, 1377 based on Foata normal form. 16/7343 useless extension candidates. Maximal degree in co-relation 61757. Up to 6386 conditions per place. [2024-06-28 01:50:55,741 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 633 selfloop transitions, 96 changer transitions 0/735 dead transitions. [2024-06-28 01:50:55,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 735 transitions, 14661 flow [2024-06-28 01:50:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:50:55,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 01:50:55,742 INFO L175 Difference]: Start difference. First operand has 464 places, 692 transitions, 12923 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:50:55,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 735 transitions, 14661 flow [2024-06-28 01:50:59,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 735 transitions, 14147 flow, removed 225 selfloop flow, removed 3 redundant places. [2024-06-28 01:50:59,448 INFO L231 Difference]: Finished difference. Result has 472 places, 692 transitions, 12618 flow [2024-06-28 01:50:59,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12409, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12618, PETRI_PLACES=472, PETRI_TRANSITIONS=692} [2024-06-28 01:50:59,448 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 432 predicate places. [2024-06-28 01:50:59,449 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 692 transitions, 12618 flow [2024-06-28 01:50:59,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:59,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:59,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:59,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:50:59,449 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:59,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash 359566741, now seen corresponding path program 26 times [2024-06-28 01:50:59,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:59,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880572254] [2024-06-28 01:50:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:59,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880572254] [2024-06-28 01:51:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880572254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:00,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:00,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:00,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651665172] [2024-06-28 01:51:00,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:00,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:51:00,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 692 transitions, 12618 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:00,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:00,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:51:00,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:02,758 INFO L124 PetriNetUnfolderBase]: 4380/7418 cut-off events. [2024-06-28 01:51:02,759 INFO L125 PetriNetUnfolderBase]: For 484259/484259 co-relation queries the response was YES. [2024-06-28 01:51:02,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61542 conditions, 7418 events. 4380/7418 cut-off events. For 484259/484259 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 53207 event pairs, 1196 based on Foata normal form. 2/7361 useless extension candidates. Maximal degree in co-relation 61319. Up to 6347 conditions per place. [2024-06-28 01:51:02,900 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 590 selfloop transitions, 133 changer transitions 0/729 dead transitions. [2024-06-28 01:51:02,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 729 transitions, 14608 flow [2024-06-28 01:51:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:51:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:51:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:51:02,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:51:02,902 INFO L175 Difference]: Start difference. First operand has 472 places, 692 transitions, 12618 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:51:02,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 729 transitions, 14608 flow [2024-06-28 01:51:06,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 729 transitions, 14293 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-28 01:51:06,460 INFO L231 Difference]: Finished difference. Result has 472 places, 694 transitions, 12852 flow [2024-06-28 01:51:06,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12335, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12852, PETRI_PLACES=472, PETRI_TRANSITIONS=694} [2024-06-28 01:51:06,461 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 432 predicate places. [2024-06-28 01:51:06,461 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 694 transitions, 12852 flow [2024-06-28 01:51:06,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:06,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:06,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:06,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:51:06,461 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:06,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash 359776487, now seen corresponding path program 12 times [2024-06-28 01:51:06,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:06,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324385755] [2024-06-28 01:51:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:06,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:07,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324385755] [2024-06-28 01:51:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324385755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:07,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:07,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:07,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780790281] [2024-06-28 01:51:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:07,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:07,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:07,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:07,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:51:07,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 694 transitions, 12852 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:07,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:07,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:51:07,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:09,876 INFO L124 PetriNetUnfolderBase]: 4445/7533 cut-off events. [2024-06-28 01:51:09,877 INFO L125 PetriNetUnfolderBase]: For 521419/521419 co-relation queries the response was YES. [2024-06-28 01:51:09,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62400 conditions, 7533 events. 4445/7533 cut-off events. For 521419/521419 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 54172 event pairs, 1202 based on Foata normal form. 10/7484 useless extension candidates. Maximal degree in co-relation 62176. Up to 6332 conditions per place. [2024-06-28 01:51:09,999 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 600 selfloop transitions, 133 changer transitions 0/739 dead transitions. [2024-06-28 01:51:09,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 739 transitions, 14856 flow [2024-06-28 01:51:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:51:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:51:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:51:10,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 01:51:10,000 INFO L175 Difference]: Start difference. First operand has 472 places, 694 transitions, 12852 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:51:10,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 739 transitions, 14856 flow [2024-06-28 01:51:13,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 739 transitions, 14355 flow, removed 119 selfloop flow, removed 8 redundant places. [2024-06-28 01:51:13,631 INFO L231 Difference]: Finished difference. Result has 475 places, 695 transitions, 12792 flow [2024-06-28 01:51:13,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12351, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12792, PETRI_PLACES=475, PETRI_TRANSITIONS=695} [2024-06-28 01:51:13,632 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 435 predicate places. [2024-06-28 01:51:13,632 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 695 transitions, 12792 flow [2024-06-28 01:51:13,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:13,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:13,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:51:13,633 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:13,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:13,633 INFO L85 PathProgramCache]: Analyzing trace with hash 367185797, now seen corresponding path program 13 times [2024-06-28 01:51:13,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:13,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662191213] [2024-06-28 01:51:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:14,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:14,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662191213] [2024-06-28 01:51:14,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662191213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:14,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:14,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:51:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913562185] [2024-06-28 01:51:14,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:14,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:51:14,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:51:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:51:14,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:51:14,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 695 transitions, 12792 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:14,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:14,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:51:14,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:16,805 INFO L124 PetriNetUnfolderBase]: 4525/7673 cut-off events. [2024-06-28 01:51:16,805 INFO L125 PetriNetUnfolderBase]: For 575909/575909 co-relation queries the response was YES. [2024-06-28 01:51:16,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64024 conditions, 7673 events. 4525/7673 cut-off events. For 575909/575909 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 55367 event pairs, 1222 based on Foata normal form. 12/7626 useless extension candidates. Maximal degree in co-relation 63799. Up to 6482 conditions per place. [2024-06-28 01:51:16,938 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 601 selfloop transitions, 129 changer transitions 0/736 dead transitions. [2024-06-28 01:51:16,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 736 transitions, 14842 flow [2024-06-28 01:51:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:51:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:51:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:51:16,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:51:16,939 INFO L175 Difference]: Start difference. First operand has 475 places, 695 transitions, 12792 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:51:16,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 736 transitions, 14842 flow [2024-06-28 01:51:20,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 736 transitions, 14459 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-28 01:51:20,664 INFO L231 Difference]: Finished difference. Result has 476 places, 697 transitions, 12925 flow [2024-06-28 01:51:20,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12409, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12925, PETRI_PLACES=476, PETRI_TRANSITIONS=697} [2024-06-28 01:51:20,665 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 436 predicate places. [2024-06-28 01:51:20,665 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 697 transitions, 12925 flow [2024-06-28 01:51:20,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:20,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:20,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:20,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:51:20,665 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:20,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1324287497, now seen corresponding path program 27 times [2024-06-28 01:51:20,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:20,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564494366] [2024-06-28 01:51:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:20,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:21,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564494366] [2024-06-28 01:51:21,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564494366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:21,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:21,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:51:21,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171218278] [2024-06-28 01:51:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:21,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:51:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:51:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:51:21,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:51:21,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 697 transitions, 12925 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:21,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:21,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:51:21,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:24,115 INFO L124 PetriNetUnfolderBase]: 4540/7686 cut-off events. [2024-06-28 01:51:24,115 INFO L125 PetriNetUnfolderBase]: For 511892/511892 co-relation queries the response was YES. [2024-06-28 01:51:24,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64168 conditions, 7686 events. 4540/7686 cut-off events. For 511892/511892 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 55333 event pairs, 1294 based on Foata normal form. 2/7633 useless extension candidates. Maximal degree in co-relation 63942. Up to 7270 conditions per place. [2024-06-28 01:51:24,260 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 677 selfloop transitions, 49 changer transitions 0/732 dead transitions. [2024-06-28 01:51:24,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 732 transitions, 14817 flow [2024-06-28 01:51:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:51:24,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:51:24,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:51:24,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 01:51:24,262 INFO L175 Difference]: Start difference. First operand has 476 places, 697 transitions, 12925 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:51:24,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 732 transitions, 14817 flow [2024-06-28 01:51:28,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 732 transitions, 14371 flow, removed 96 selfloop flow, removed 8 redundant places. [2024-06-28 01:51:28,304 INFO L231 Difference]: Finished difference. Result has 478 places, 699 transitions, 12838 flow [2024-06-28 01:51:28,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12479, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12838, PETRI_PLACES=478, PETRI_TRANSITIONS=699} [2024-06-28 01:51:28,305 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 438 predicate places. [2024-06-28 01:51:28,305 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 699 transitions, 12838 flow [2024-06-28 01:51:28,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:28,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:28,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:28,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:51:28,305 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:28,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:28,306 INFO L85 PathProgramCache]: Analyzing trace with hash 359561161, now seen corresponding path program 28 times [2024-06-28 01:51:28,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:28,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759288337] [2024-06-28 01:51:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:28,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759288337] [2024-06-28 01:51:29,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759288337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:29,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:29,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132260294] [2024-06-28 01:51:29,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:29,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:29,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:29,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:51:29,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 699 transitions, 12838 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:29,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:29,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:51:29,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:31,843 INFO L124 PetriNetUnfolderBase]: 4651/7891 cut-off events. [2024-06-28 01:51:31,843 INFO L125 PetriNetUnfolderBase]: For 612209/612209 co-relation queries the response was YES. [2024-06-28 01:51:31,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67190 conditions, 7891 events. 4651/7891 cut-off events. For 612209/612209 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 57287 event pairs, 1245 based on Foata normal form. 2/7834 useless extension candidates. Maximal degree in co-relation 66963. Up to 6477 conditions per place. [2024-06-28 01:51:32,007 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 597 selfloop transitions, 140 changer transitions 0/743 dead transitions. [2024-06-28 01:51:32,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 743 transitions, 15392 flow [2024-06-28 01:51:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:51:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:51:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:51:32,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:51:32,009 INFO L175 Difference]: Start difference. First operand has 478 places, 699 transitions, 12838 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:51:32,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 743 transitions, 15392 flow [2024-06-28 01:51:36,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 743 transitions, 15049 flow, removed 124 selfloop flow, removed 8 redundant places. [2024-06-28 01:51:37,127 INFO L231 Difference]: Finished difference. Result has 481 places, 703 transitions, 13312 flow [2024-06-28 01:51:37,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12495, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13312, PETRI_PLACES=481, PETRI_TRANSITIONS=703} [2024-06-28 01:51:37,128 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 441 predicate places. [2024-06-28 01:51:37,128 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 703 transitions, 13312 flow [2024-06-28 01:51:37,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:37,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:37,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:37,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:51:37,130 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:37,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1523589287, now seen corresponding path program 29 times [2024-06-28 01:51:37,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:37,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316955552] [2024-06-28 01:51:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:37,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:37,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:37,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316955552] [2024-06-28 01:51:37,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316955552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:37,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:37,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:37,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519609373] [2024-06-28 01:51:37,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:37,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:38,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:51:38,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 703 transitions, 13312 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:38,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:38,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:51:38,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:40,828 INFO L124 PetriNetUnfolderBase]: 4666/7900 cut-off events. [2024-06-28 01:51:40,828 INFO L125 PetriNetUnfolderBase]: For 620800/620800 co-relation queries the response was YES. [2024-06-28 01:51:40,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67971 conditions, 7900 events. 4666/7900 cut-off events. For 620800/620800 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 57190 event pairs, 829 based on Foata normal form. 2/7844 useless extension candidates. Maximal degree in co-relation 67742. Up to 7289 conditions per place. [2024-06-28 01:51:40,996 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 630 selfloop transitions, 104 changer transitions 0/740 dead transitions. [2024-06-28 01:51:40,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 740 transitions, 15238 flow [2024-06-28 01:51:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:51:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:51:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:51:40,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 01:51:40,997 INFO L175 Difference]: Start difference. First operand has 481 places, 703 transitions, 13312 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:51:40,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 740 transitions, 15238 flow [2024-06-28 01:51:45,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 740 transitions, 14810 flow, removed 139 selfloop flow, removed 6 redundant places. [2024-06-28 01:51:45,765 INFO L231 Difference]: Finished difference. Result has 485 places, 705 transitions, 13363 flow [2024-06-28 01:51:45,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12884, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13363, PETRI_PLACES=485, PETRI_TRANSITIONS=705} [2024-06-28 01:51:45,770 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 445 predicate places. [2024-06-28 01:51:45,770 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 705 transitions, 13363 flow [2024-06-28 01:51:45,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:45,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:45,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:45,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:51:45,771 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:45,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1523594867, now seen corresponding path program 30 times [2024-06-28 01:51:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160731646] [2024-06-28 01:51:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:46,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:46,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160731646] [2024-06-28 01:51:46,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160731646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:46,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:46,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:46,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121643216] [2024-06-28 01:51:46,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:46,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:46,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:46,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:46,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:46,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:51:46,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 705 transitions, 13363 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:46,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:46,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:51:46,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:49,392 INFO L124 PetriNetUnfolderBase]: 4681/7925 cut-off events. [2024-06-28 01:51:49,393 INFO L125 PetriNetUnfolderBase]: For 624058/624058 co-relation queries the response was YES. [2024-06-28 01:51:49,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68319 conditions, 7925 events. 4681/7925 cut-off events. For 624058/624058 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 57408 event pairs, 837 based on Foata normal form. 2/7869 useless extension candidates. Maximal degree in co-relation 68088. Up to 7273 conditions per place. [2024-06-28 01:51:49,533 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 629 selfloop transitions, 107 changer transitions 0/742 dead transitions. [2024-06-28 01:51:49,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 742 transitions, 15295 flow [2024-06-28 01:51:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:51:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:51:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:51:49,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:51:49,534 INFO L175 Difference]: Start difference. First operand has 485 places, 705 transitions, 13363 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:51:49,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 742 transitions, 15295 flow [2024-06-28 01:51:54,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 742 transitions, 14832 flow, removed 129 selfloop flow, removed 8 redundant places. [2024-06-28 01:51:54,079 INFO L231 Difference]: Finished difference. Result has 487 places, 707 transitions, 13389 flow [2024-06-28 01:51:54,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12900, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13389, PETRI_PLACES=487, PETRI_TRANSITIONS=707} [2024-06-28 01:51:54,080 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 447 predicate places. [2024-06-28 01:51:54,080 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 707 transitions, 13389 flow [2024-06-28 01:51:54,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:54,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:54,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:54,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:51:54,081 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:54,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash 366926327, now seen corresponding path program 14 times [2024-06-28 01:51:54,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:54,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658686994] [2024-06-28 01:51:54,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:54,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:54,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:54,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658686994] [2024-06-28 01:51:54,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658686994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:54,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:54,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827852012] [2024-06-28 01:51:54,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:54,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:54,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:51:54,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 707 transitions, 13389 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:54,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:54,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:51:54,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:57,716 INFO L124 PetriNetUnfolderBase]: 4746/8056 cut-off events. [2024-06-28 01:51:57,716 INFO L125 PetriNetUnfolderBase]: For 709721/709721 co-relation queries the response was YES. [2024-06-28 01:51:57,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69402 conditions, 8056 events. 4746/8056 cut-off events. For 709721/709721 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 58694 event pairs, 1277 based on Foata normal form. 10/8007 useless extension candidates. Maximal degree in co-relation 69170. Up to 6735 conditions per place. [2024-06-28 01:51:57,876 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 617 selfloop transitions, 129 changer transitions 0/752 dead transitions. [2024-06-28 01:51:57,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 752 transitions, 15443 flow [2024-06-28 01:51:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:51:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:51:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:51:57,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823232323232323 [2024-06-28 01:51:57,877 INFO L175 Difference]: Start difference. First operand has 487 places, 707 transitions, 13389 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:51:57,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 752 transitions, 15443 flow [2024-06-28 01:52:03,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 752 transitions, 14970 flow, removed 131 selfloop flow, removed 8 redundant places. [2024-06-28 01:52:03,307 INFO L231 Difference]: Finished difference. Result has 490 places, 708 transitions, 13362 flow [2024-06-28 01:52:03,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12916, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13362, PETRI_PLACES=490, PETRI_TRANSITIONS=708} [2024-06-28 01:52:03,308 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 450 predicate places. [2024-06-28 01:52:03,308 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 708 transitions, 13362 flow [2024-06-28 01:52:03,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:03,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:03,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:03,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:52:03,308 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:03,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash 367195097, now seen corresponding path program 15 times [2024-06-28 01:52:03,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:03,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680357453] [2024-06-28 01:52:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:03,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:03,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:03,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680357453] [2024-06-28 01:52:03,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680357453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:03,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:03,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:52:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851011065] [2024-06-28 01:52:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:03,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:52:03,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:03,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:52:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:52:04,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:52:04,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 708 transitions, 13362 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:04,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:04,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:52:04,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:06,833 INFO L124 PetriNetUnfolderBase]: 4796/8146 cut-off events. [2024-06-28 01:52:06,833 INFO L125 PetriNetUnfolderBase]: For 719122/719122 co-relation queries the response was YES. [2024-06-28 01:52:06,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70280 conditions, 8146 events. 4796/8146 cut-off events. For 719122/719122 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 59475 event pairs, 1276 based on Foata normal form. 8/8095 useless extension candidates. Maximal degree in co-relation 70047. Up to 6567 conditions per place. [2024-06-28 01:52:06,992 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 613 selfloop transitions, 132 changer transitions 0/751 dead transitions. [2024-06-28 01:52:06,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 751 transitions, 15436 flow [2024-06-28 01:52:06,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:52:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:52:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:52:06,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 01:52:06,993 INFO L175 Difference]: Start difference. First operand has 490 places, 708 transitions, 13362 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:52:06,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 751 transitions, 15436 flow [2024-06-28 01:52:11,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 751 transitions, 15052 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-28 01:52:11,428 INFO L231 Difference]: Finished difference. Result has 491 places, 709 transitions, 13428 flow [2024-06-28 01:52:11,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12978, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13428, PETRI_PLACES=491, PETRI_TRANSITIONS=709} [2024-06-28 01:52:11,429 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 451 predicate places. [2024-06-28 01:52:11,429 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 709 transitions, 13428 flow [2024-06-28 01:52:11,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:11,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:11,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:11,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:52:11,430 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:11,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:11,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1523739017, now seen corresponding path program 31 times [2024-06-28 01:52:11,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:11,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639821171] [2024-06-28 01:52:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:11,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:12,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:12,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639821171] [2024-06-28 01:52:12,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639821171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:12,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:12,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:52:12,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684879529] [2024-06-28 01:52:12,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:12,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:52:12,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:52:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:52:12,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:52:12,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 709 transitions, 13428 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:12,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:12,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:52:12,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:15,151 INFO L124 PetriNetUnfolderBase]: 4811/8155 cut-off events. [2024-06-28 01:52:15,152 INFO L125 PetriNetUnfolderBase]: For 668673/668673 co-relation queries the response was YES. [2024-06-28 01:52:15,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70430 conditions, 8155 events. 4811/8155 cut-off events. For 668673/668673 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 59497 event pairs, 883 based on Foata normal form. 2/8099 useless extension candidates. Maximal degree in co-relation 70196. Up to 7544 conditions per place. [2024-06-28 01:52:15,303 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 639 selfloop transitions, 101 changer transitions 0/746 dead transitions. [2024-06-28 01:52:15,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 746 transitions, 15374 flow [2024-06-28 01:52:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:52:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:52:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:52:15,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 01:52:15,305 INFO L175 Difference]: Start difference. First operand has 491 places, 709 transitions, 13428 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:52:15,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 746 transitions, 15374 flow [2024-06-28 01:52:20,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 746 transitions, 14968 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-28 01:52:20,169 INFO L231 Difference]: Finished difference. Result has 493 places, 711 transitions, 13507 flow [2024-06-28 01:52:20,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13022, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13507, PETRI_PLACES=493, PETRI_TRANSITIONS=711} [2024-06-28 01:52:20,170 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 453 predicate places. [2024-06-28 01:52:20,170 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 711 transitions, 13507 flow [2024-06-28 01:52:20,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:20,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:20,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:20,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:52:20,170 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:20,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 929055705, now seen corresponding path program 16 times [2024-06-28 01:52:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:20,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860080532] [2024-06-28 01:52:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:20,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:20,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860080532] [2024-06-28 01:52:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860080532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:20,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:20,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:52:20,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455120879] [2024-06-28 01:52:20,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:20,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:52:20,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:20,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:52:20,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:52:20,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:52:20,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 711 transitions, 13507 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:20,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:20,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:52:20,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:23,868 INFO L124 PetriNetUnfolderBase]: 4939/8391 cut-off events. [2024-06-28 01:52:23,868 INFO L125 PetriNetUnfolderBase]: For 834186/834186 co-relation queries the response was YES. [2024-06-28 01:52:23,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73809 conditions, 8391 events. 4939/8391 cut-off events. For 834186/834186 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 61677 event pairs, 2150 based on Foata normal form. 8/8345 useless extension candidates. Maximal degree in co-relation 73574. Up to 7648 conditions per place. [2024-06-28 01:52:24,036 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 716 selfloop transitions, 31 changer transitions 0/753 dead transitions. [2024-06-28 01:52:24,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 753 transitions, 15909 flow [2024-06-28 01:52:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:52:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:52:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:52:24,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:52:24,038 INFO L175 Difference]: Start difference. First operand has 493 places, 711 transitions, 13507 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:52:24,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 753 transitions, 15909 flow [2024-06-28 01:52:29,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 753 transitions, 15440 flow, removed 135 selfloop flow, removed 8 redundant places. [2024-06-28 01:52:29,674 INFO L231 Difference]: Finished difference. Result has 496 places, 713 transitions, 13474 flow [2024-06-28 01:52:29,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13038, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13474, PETRI_PLACES=496, PETRI_TRANSITIONS=713} [2024-06-28 01:52:29,675 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 456 predicate places. [2024-06-28 01:52:29,675 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 713 transitions, 13474 flow [2024-06-28 01:52:29,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:29,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:29,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:29,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:52:29,676 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:29,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash 940097595, now seen corresponding path program 17 times [2024-06-28 01:52:29,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:29,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186186681] [2024-06-28 01:52:29,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:29,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:30,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:30,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186186681] [2024-06-28 01:52:30,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186186681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:30,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:52:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213223015] [2024-06-28 01:52:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:30,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:52:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:52:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:52:30,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:52:30,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 713 transitions, 13474 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:30,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:30,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:52:30,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:33,487 INFO L124 PetriNetUnfolderBase]: 4989/8481 cut-off events. [2024-06-28 01:52:33,487 INFO L125 PetriNetUnfolderBase]: For 859055/859055 co-relation queries the response was YES. [2024-06-28 01:52:33,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74283 conditions, 8481 events. 4989/8481 cut-off events. For 859055/859055 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 62374 event pairs, 2157 based on Foata normal form. 8/8435 useless extension candidates. Maximal degree in co-relation 74047. Up to 7605 conditions per place. [2024-06-28 01:52:33,631 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 719 selfloop transitions, 34 changer transitions 0/759 dead transitions. [2024-06-28 01:52:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 759 transitions, 15736 flow [2024-06-28 01:52:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:52:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:52:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:52:33,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 01:52:33,632 INFO L175 Difference]: Start difference. First operand has 496 places, 713 transitions, 13474 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:52:33,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 759 transitions, 15736 flow [2024-06-28 01:52:38,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 759 transitions, 15516 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-28 01:52:38,737 INFO L231 Difference]: Finished difference. Result has 500 places, 714 transitions, 13514 flow [2024-06-28 01:52:38,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13254, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13514, PETRI_PLACES=500, PETRI_TRANSITIONS=714} [2024-06-28 01:52:38,738 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 460 predicate places. [2024-06-28 01:52:38,738 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 714 transitions, 13514 flow [2024-06-28 01:52:38,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:38,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:38,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:52:38,739 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:38,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1518017161, now seen corresponding path program 18 times [2024-06-28 01:52:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:38,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062020040] [2024-06-28 01:52:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:39,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:39,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062020040] [2024-06-28 01:52:39,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062020040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:39,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:52:39,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487877093] [2024-06-28 01:52:39,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:39,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:52:39,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:52:39,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:52:39,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:52:39,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 714 transitions, 13514 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:39,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:39,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:52:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:42,962 INFO L124 PetriNetUnfolderBase]: 5054/8587 cut-off events. [2024-06-28 01:52:42,962 INFO L125 PetriNetUnfolderBase]: For 885144/885144 co-relation queries the response was YES. [2024-06-28 01:52:43,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75352 conditions, 8587 events. 5054/8587 cut-off events. For 885144/885144 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 63494 event pairs, 960 based on Foata normal form. 10/8540 useless extension candidates. Maximal degree in co-relation 75115. Up to 7824 conditions per place. [2024-06-28 01:52:43,130 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 646 selfloop transitions, 107 changer transitions 0/759 dead transitions. [2024-06-28 01:52:43,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 759 transitions, 15504 flow [2024-06-28 01:52:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:52:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:52:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:52:43,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 01:52:43,131 INFO L175 Difference]: Start difference. First operand has 500 places, 714 transitions, 13514 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:52:43,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 759 transitions, 15504 flow [2024-06-28 01:52:48,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 759 transitions, 15288 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-06-28 01:52:48,462 INFO L231 Difference]: Finished difference. Result has 502 places, 715 transitions, 13709 flow [2024-06-28 01:52:48,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13298, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13709, PETRI_PLACES=502, PETRI_TRANSITIONS=715} [2024-06-28 01:52:48,462 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 462 predicate places. [2024-06-28 01:52:48,462 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 715 transitions, 13709 flow [2024-06-28 01:52:48,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:48,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:48,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:48,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:52:48,463 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:48,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1324293077, now seen corresponding path program 32 times [2024-06-28 01:52:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:48,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632922261] [2024-06-28 01:52:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:48,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632922261] [2024-06-28 01:52:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632922261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:49,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:52:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718941603] [2024-06-28 01:52:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:49,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:52:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:52:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:52:49,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:52:49,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 715 transitions, 13709 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:49,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:49,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:52:49,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:52,229 INFO L124 PetriNetUnfolderBase]: 5150/8759 cut-off events. [2024-06-28 01:52:52,230 INFO L125 PetriNetUnfolderBase]: For 963268/963268 co-relation queries the response was YES. [2024-06-28 01:52:52,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78976 conditions, 8759 events. 5150/8759 cut-off events. For 963268/963268 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 65153 event pairs, 1486 based on Foata normal form. 2/8707 useless extension candidates. Maximal degree in co-relation 78738. Up to 8139 conditions per place. [2024-06-28 01:52:52,417 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 697 selfloop transitions, 54 changer transitions 0/757 dead transitions. [2024-06-28 01:52:52,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 757 transitions, 16277 flow [2024-06-28 01:52:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:52:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:52:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:52:52,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 01:52:52,418 INFO L175 Difference]: Start difference. First operand has 502 places, 715 transitions, 13709 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:52:52,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 757 transitions, 16277 flow [2024-06-28 01:52:59,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 757 transitions, 15918 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-28 01:52:59,229 INFO L231 Difference]: Finished difference. Result has 503 places, 719 transitions, 14035 flow [2024-06-28 01:52:59,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13350, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14035, PETRI_PLACES=503, PETRI_TRANSITIONS=719} [2024-06-28 01:52:59,230 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 463 predicate places. [2024-06-28 01:52:59,230 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 719 transitions, 14035 flow [2024-06-28 01:52:59,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:59,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:59,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:59,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:52:59,230 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:59,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:59,231 INFO L85 PathProgramCache]: Analyzing trace with hash 929046405, now seen corresponding path program 19 times [2024-06-28 01:52:59,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:59,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485035811] [2024-06-28 01:52:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:59,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485035811] [2024-06-28 01:52:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485035811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:59,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:52:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026822106] [2024-06-28 01:52:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:52:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:52:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:53:00,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:53:00,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 719 transitions, 14035 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:00,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:00,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:53:00,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:03,251 INFO L124 PetriNetUnfolderBase]: 5134/8736 cut-off events. [2024-06-28 01:53:03,251 INFO L125 PetriNetUnfolderBase]: For 923501/923501 co-relation queries the response was YES. [2024-06-28 01:53:03,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76642 conditions, 8736 events. 5134/8736 cut-off events. For 923501/923501 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 64944 event pairs, 2228 based on Foata normal form. 12/8694 useless extension candidates. Maximal degree in co-relation 76403. Up to 8284 conditions per place. [2024-06-28 01:53:03,407 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 718 selfloop transitions, 31 changer transitions 0/755 dead transitions. [2024-06-28 01:53:03,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 755 transitions, 15787 flow [2024-06-28 01:53:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:53:03,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 01:53:03,409 INFO L175 Difference]: Start difference. First operand has 503 places, 719 transitions, 14035 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:53:03,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 755 transitions, 15787 flow [2024-06-28 01:53:08,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 755 transitions, 15249 flow, removed 238 selfloop flow, removed 7 redundant places. [2024-06-28 01:53:08,868 INFO L231 Difference]: Finished difference. Result has 507 places, 719 transitions, 13565 flow [2024-06-28 01:53:08,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13497, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13565, PETRI_PLACES=507, PETRI_TRANSITIONS=719} [2024-06-28 01:53:08,868 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 467 predicate places. [2024-06-28 01:53:08,868 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 719 transitions, 13565 flow [2024-06-28 01:53:08,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:08,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:08,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:08,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:53:08,869 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:08,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1316935847, now seen corresponding path program 33 times [2024-06-28 01:53:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:08,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034764817] [2024-06-28 01:53:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:09,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:09,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034764817] [2024-06-28 01:53:09,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034764817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:09,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:09,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:53:09,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660602321] [2024-06-28 01:53:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:09,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:53:09,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:09,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:53:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:53:09,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:53:09,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 719 transitions, 13565 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:09,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:09,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:53:09,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:12,805 INFO L124 PetriNetUnfolderBase]: 5118/8703 cut-off events. [2024-06-28 01:53:12,805 INFO L125 PetriNetUnfolderBase]: For 764253/764253 co-relation queries the response was YES. [2024-06-28 01:53:12,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73306 conditions, 8703 events. 5118/8703 cut-off events. For 764253/764253 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 64699 event pairs, 1462 based on Foata normal form. 12/8661 useless extension candidates. Maximal degree in co-relation 73066. Up to 8168 conditions per place. [2024-06-28 01:53:13,001 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 702 selfloop transitions, 48 changer transitions 0/756 dead transitions. [2024-06-28 01:53:13,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 756 transitions, 15323 flow [2024-06-28 01:53:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:53:13,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-28 01:53:13,003 INFO L175 Difference]: Start difference. First operand has 507 places, 719 transitions, 13565 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:53:13,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 756 transitions, 15323 flow [2024-06-28 01:53:19,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 756 transitions, 15049 flow, removed 101 selfloop flow, removed 10 redundant places. [2024-06-28 01:53:19,458 INFO L231 Difference]: Finished difference. Result has 507 places, 719 transitions, 13393 flow [2024-06-28 01:53:19,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13291, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13393, PETRI_PLACES=507, PETRI_TRANSITIONS=719} [2024-06-28 01:53:19,459 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 467 predicate places. [2024-06-28 01:53:19,459 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 719 transitions, 13393 flow [2024-06-28 01:53:19,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:19,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:19,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:19,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:53:19,459 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:19,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:19,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1324077751, now seen corresponding path program 20 times [2024-06-28 01:53:19,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:19,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897539955] [2024-06-28 01:53:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:19,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:20,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897539955] [2024-06-28 01:53:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897539955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:20,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:20,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:53:20,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115317545] [2024-06-28 01:53:20,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:20,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:53:20,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:20,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:53:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:53:20,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:53:20,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 719 transitions, 13393 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:20,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:20,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:53:20,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:23,709 INFO L124 PetriNetUnfolderBase]: 5183/8818 cut-off events. [2024-06-28 01:53:23,709 INFO L125 PetriNetUnfolderBase]: For 749797/749797 co-relation queries the response was YES. [2024-06-28 01:53:23,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73827 conditions, 8818 events. 5183/8818 cut-off events. For 749797/749797 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 65732 event pairs, 1475 based on Foata normal form. 10/8774 useless extension candidates. Maximal degree in co-relation 73586. Up to 8273 conditions per place. [2024-06-28 01:53:23,863 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 707 selfloop transitions, 49 changer transitions 0/762 dead transitions. [2024-06-28 01:53:23,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 762 transitions, 15385 flow [2024-06-28 01:53:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:53:23,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 01:53:23,865 INFO L175 Difference]: Start difference. First operand has 507 places, 719 transitions, 13393 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:53:23,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 762 transitions, 15385 flow [2024-06-28 01:53:29,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 762 transitions, 15277 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:53:29,304 INFO L231 Difference]: Finished difference. Result has 509 places, 720 transitions, 13584 flow [2024-06-28 01:53:29,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13285, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13584, PETRI_PLACES=509, PETRI_TRANSITIONS=720} [2024-06-28 01:53:29,305 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 469 predicate places. [2024-06-28 01:53:29,305 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 720 transitions, 13584 flow [2024-06-28 01:53:29,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:29,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:29,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:29,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:53:29,305 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:29,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1316927911, now seen corresponding path program 21 times [2024-06-28 01:53:29,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:29,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348996578] [2024-06-28 01:53:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:29,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:30,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:30,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348996578] [2024-06-28 01:53:30,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348996578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:30,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:30,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:53:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524526958] [2024-06-28 01:53:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:53:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:53:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:53:30,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:53:30,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 720 transitions, 13584 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:30,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:30,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:53:30,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:33,225 INFO L124 PetriNetUnfolderBase]: 5248/8933 cut-off events. [2024-06-28 01:53:33,225 INFO L125 PetriNetUnfolderBase]: For 803808/803808 co-relation queries the response was YES. [2024-06-28 01:53:33,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75458 conditions, 8933 events. 5248/8933 cut-off events. For 803808/803808 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 66817 event pairs, 1491 based on Foata normal form. 10/8889 useless extension candidates. Maximal degree in co-relation 75216. Up to 8268 conditions per place. [2024-06-28 01:53:33,419 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 709 selfloop transitions, 48 changer transitions 0/763 dead transitions. [2024-06-28 01:53:33,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 763 transitions, 15580 flow [2024-06-28 01:53:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:53:33,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 01:53:33,421 INFO L175 Difference]: Start difference. First operand has 509 places, 720 transitions, 13584 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:53:33,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 763 transitions, 15580 flow [2024-06-28 01:53:39,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 763 transitions, 15341 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-28 01:53:39,956 INFO L231 Difference]: Finished difference. Result has 511 places, 721 transitions, 13645 flow [2024-06-28 01:53:39,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13345, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13645, PETRI_PLACES=511, PETRI_TRANSITIONS=721} [2024-06-28 01:53:39,957 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 471 predicate places. [2024-06-28 01:53:39,957 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 721 transitions, 13645 flow [2024-06-28 01:53:39,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:39,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:39,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:39,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:53:39,957 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:39,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1316659141, now seen corresponding path program 22 times [2024-06-28 01:53:39,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:39,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490858815] [2024-06-28 01:53:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:39,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:40,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:40,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490858815] [2024-06-28 01:53:40,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490858815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:40,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:40,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:53:40,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100965742] [2024-06-28 01:53:40,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:40,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:53:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:40,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:53:40,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:53:40,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:53:40,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 721 transitions, 13645 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:40,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:40,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:53:40,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:44,371 INFO L124 PetriNetUnfolderBase]: 5283/8998 cut-off events. [2024-06-28 01:53:44,371 INFO L125 PetriNetUnfolderBase]: For 778413/778413 co-relation queries the response was YES. [2024-06-28 01:53:44,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75773 conditions, 8998 events. 5283/8998 cut-off events. For 778413/778413 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 67332 event pairs, 1488 based on Foata normal form. 8/8952 useless extension candidates. Maximal degree in co-relation 75530. Up to 8075 conditions per place. [2024-06-28 01:53:44,541 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 706 selfloop transitions, 50 changer transitions 0/762 dead transitions. [2024-06-28 01:53:44,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 762 transitions, 15661 flow [2024-06-28 01:53:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:53:44,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:53:44,556 INFO L175 Difference]: Start difference. First operand has 511 places, 721 transitions, 13645 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:53:44,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 762 transitions, 15661 flow [2024-06-28 01:53:50,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 762 transitions, 15415 flow, removed 76 selfloop flow, removed 10 redundant places. [2024-06-28 01:53:50,894 INFO L231 Difference]: Finished difference. Result has 511 places, 722 transitions, 13701 flow [2024-06-28 01:53:50,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13399, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13701, PETRI_PLACES=511, PETRI_TRANSITIONS=722} [2024-06-28 01:53:50,895 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 471 predicate places. [2024-06-28 01:53:50,895 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 722 transitions, 13701 flow [2024-06-28 01:53:50,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:50,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:50,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:50,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:53:50,895 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:50,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:50,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1373413515, now seen corresponding path program 23 times [2024-06-28 01:53:50,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:50,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010915930] [2024-06-28 01:53:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:50,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:51,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010915930] [2024-06-28 01:53:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010915930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:51,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:53:51,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312687259] [2024-06-28 01:53:51,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:51,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:53:51,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:51,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:53:51,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:53:51,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:53:51,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 722 transitions, 13701 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:51,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:51,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:53:51,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:55,698 INFO L124 PetriNetUnfolderBase]: 5270/8980 cut-off events. [2024-06-28 01:53:55,698 INFO L125 PetriNetUnfolderBase]: For 686669/686669 co-relation queries the response was YES. [2024-06-28 01:53:55,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73755 conditions, 8980 events. 5270/8980 cut-off events. For 686669/686669 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 67314 event pairs, 2261 based on Foata normal form. 10/8936 useless extension candidates. Maximal degree in co-relation 73512. Up to 8398 conditions per place. [2024-06-28 01:53:55,884 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 726 selfloop transitions, 30 changer transitions 0/762 dead transitions. [2024-06-28 01:53:55,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 762 transitions, 15493 flow [2024-06-28 01:53:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:53:55,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-28 01:53:55,886 INFO L175 Difference]: Start difference. First operand has 511 places, 722 transitions, 13701 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:53:55,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 762 transitions, 15493 flow [2024-06-28 01:54:01,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 762 transitions, 15109 flow, removed 143 selfloop flow, removed 8 redundant places. [2024-06-28 01:54:01,066 INFO L231 Difference]: Finished difference. Result has 514 places, 722 transitions, 13385 flow [2024-06-28 01:54:01,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13317, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13385, PETRI_PLACES=514, PETRI_TRANSITIONS=722} [2024-06-28 01:54:01,067 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 474 predicate places. [2024-06-28 01:54:01,068 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 722 transitions, 13385 flow [2024-06-28 01:54:01,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:01,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:01,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:54:01,068 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:01,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:01,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1132805252, now seen corresponding path program 1 times [2024-06-28 01:54:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:01,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967960651] [2024-06-28 01:54:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:01,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:02,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:02,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967960651] [2024-06-28 01:54:02,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967960651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:02,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:02,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:02,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544013528] [2024-06-28 01:54:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:02,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:02,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:02,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:02,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:54:02,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 722 transitions, 13385 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:02,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:02,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:54:02,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:05,927 INFO L124 PetriNetUnfolderBase]: 5305/9038 cut-off events. [2024-06-28 01:54:05,927 INFO L125 PetriNetUnfolderBase]: For 611801/611801 co-relation queries the response was YES. [2024-06-28 01:54:06,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73284 conditions, 9038 events. 5305/9038 cut-off events. For 611801/611801 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 67362 event pairs, 1780 based on Foata normal form. 6/8991 useless extension candidates. Maximal degree in co-relation 73040. Up to 8410 conditions per place. [2024-06-28 01:54:06,090 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 672 selfloop transitions, 91 changer transitions 0/769 dead transitions. [2024-06-28 01:54:06,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 769 transitions, 15323 flow [2024-06-28 01:54:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:54:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:54:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 01:54:06,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:54:06,092 INFO L175 Difference]: Start difference. First operand has 514 places, 722 transitions, 13385 flow. Second operand 12 states and 192 transitions. [2024-06-28 01:54:06,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 769 transitions, 15323 flow [2024-06-28 01:54:12,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 769 transitions, 15252 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:54:12,030 INFO L231 Difference]: Finished difference. Result has 515 places, 723 transitions, 13702 flow [2024-06-28 01:54:12,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13314, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13702, PETRI_PLACES=515, PETRI_TRANSITIONS=723} [2024-06-28 01:54:12,031 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 475 predicate places. [2024-06-28 01:54:12,031 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 723 transitions, 13702 flow [2024-06-28 01:54:12,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:12,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:12,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:12,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:54:12,031 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:12,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash 69425488, now seen corresponding path program 2 times [2024-06-28 01:54:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570446013] [2024-06-28 01:54:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:13,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:13,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570446013] [2024-06-28 01:54:13,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570446013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:13,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:13,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:13,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189342629] [2024-06-28 01:54:13,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:13,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:13,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:13,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:13,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:13,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:54:13,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 723 transitions, 13702 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:13,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:13,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:54:13,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:16,834 INFO L124 PetriNetUnfolderBase]: 5361/9142 cut-off events. [2024-06-28 01:54:16,835 INFO L125 PetriNetUnfolderBase]: For 673945/673945 co-relation queries the response was YES. [2024-06-28 01:54:16,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75080 conditions, 9142 events. 5361/9142 cut-off events. For 673945/673945 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 68773 event pairs, 1922 based on Foata normal form. 6/9095 useless extension candidates. Maximal degree in co-relation 74836. Up to 8549 conditions per place. [2024-06-28 01:54:17,166 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 677 selfloop transitions, 88 changer transitions 0/771 dead transitions. [2024-06-28 01:54:17,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 771 transitions, 15850 flow [2024-06-28 01:54:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:54:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:54:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-28 01:54:17,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-06-28 01:54:17,167 INFO L175 Difference]: Start difference. First operand has 515 places, 723 transitions, 13702 flow. Second operand 12 states and 194 transitions. [2024-06-28 01:54:17,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 771 transitions, 15850 flow [2024-06-28 01:54:22,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 771 transitions, 15305 flow, removed 182 selfloop flow, removed 10 redundant places. [2024-06-28 01:54:22,235 INFO L231 Difference]: Finished difference. Result has 517 places, 725 transitions, 13747 flow [2024-06-28 01:54:22,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13342, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13747, PETRI_PLACES=517, PETRI_TRANSITIONS=725} [2024-06-28 01:54:22,236 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 477 predicate places. [2024-06-28 01:54:22,236 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 725 transitions, 13747 flow [2024-06-28 01:54:22,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:22,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:22,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:22,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:54:22,236 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:22,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash 675687600, now seen corresponding path program 3 times [2024-06-28 01:54:22,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:22,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179800463] [2024-06-28 01:54:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:22,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:23,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179800463] [2024-06-28 01:54:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179800463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:23,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:23,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262498314] [2024-06-28 01:54:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:23,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:54:23,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 725 transitions, 13747 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:23,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:23,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:54:23,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:27,458 INFO L124 PetriNetUnfolderBase]: 5396/9226 cut-off events. [2024-06-28 01:54:27,459 INFO L125 PetriNetUnfolderBase]: For 650895/650895 co-relation queries the response was YES. [2024-06-28 01:54:27,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74934 conditions, 9226 events. 5396/9226 cut-off events. For 650895/650895 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 69798 event pairs, 1871 based on Foata normal form. 6/9175 useless extension candidates. Maximal degree in co-relation 74689. Up to 8512 conditions per place. [2024-06-28 01:54:27,634 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 648 selfloop transitions, 118 changer transitions 0/772 dead transitions. [2024-06-28 01:54:27,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 772 transitions, 15711 flow [2024-06-28 01:54:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:54:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:54:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 01:54:27,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:54:27,636 INFO L175 Difference]: Start difference. First operand has 517 places, 725 transitions, 13747 flow. Second operand 12 states and 198 transitions. [2024-06-28 01:54:27,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 772 transitions, 15711 flow [2024-06-28 01:54:32,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 772 transitions, 15391 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:32,759 INFO L231 Difference]: Finished difference. Result has 523 places, 726 transitions, 13872 flow [2024-06-28 01:54:32,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13427, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13872, PETRI_PLACES=523, PETRI_TRANSITIONS=726} [2024-06-28 01:54:32,759 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 483 predicate places. [2024-06-28 01:54:32,760 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 726 transitions, 13872 flow [2024-06-28 01:54:32,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:32,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:32,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:32,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:54:32,760 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:32,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:32,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1077613388, now seen corresponding path program 1 times [2024-06-28 01:54:32,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:32,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431968015] [2024-06-28 01:54:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431968015] [2024-06-28 01:54:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431968015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687450735] [2024-06-28 01:54:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:33,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:54:33,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 726 transitions, 13872 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:33,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:33,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:54:33,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:37,866 INFO L124 PetriNetUnfolderBase]: 5446/9305 cut-off events. [2024-06-28 01:54:37,866 INFO L125 PetriNetUnfolderBase]: For 686829/686829 co-relation queries the response was YES. [2024-06-28 01:54:37,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75997 conditions, 9305 events. 5446/9305 cut-off events. For 686829/686829 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 70278 event pairs, 1905 based on Foata normal form. 8/9260 useless extension candidates. Maximal degree in co-relation 75751. Up to 8475 conditions per place. [2024-06-28 01:54:38,044 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 647 selfloop transitions, 122 changer transitions 0/775 dead transitions. [2024-06-28 01:54:38,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 775 transitions, 15898 flow [2024-06-28 01:54:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:54:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:54:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-28 01:54:38,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:54:38,061 INFO L175 Difference]: Start difference. First operand has 523 places, 726 transitions, 13872 flow. Second operand 12 states and 200 transitions. [2024-06-28 01:54:38,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 775 transitions, 15898 flow [2024-06-28 01:54:43,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 775 transitions, 15449 flow, removed 93 selfloop flow, removed 10 redundant places. [2024-06-28 01:54:43,064 INFO L231 Difference]: Finished difference. Result has 525 places, 727 transitions, 13886 flow [2024-06-28 01:54:43,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13423, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13886, PETRI_PLACES=525, PETRI_TRANSITIONS=727} [2024-06-28 01:54:43,065 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 485 predicate places. [2024-06-28 01:54:43,065 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 727 transitions, 13886 flow [2024-06-28 01:54:43,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:43,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:43,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:54:43,066 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:43,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1077404820, now seen corresponding path program 4 times [2024-06-28 01:54:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777000971] [2024-06-28 01:54:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:44,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:44,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777000971] [2024-06-28 01:54:44,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777000971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:44,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:44,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:44,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861822739] [2024-06-28 01:54:44,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:44,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:44,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:54:44,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 727 transitions, 13886 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:44,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:44,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:54:44,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand