./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix024_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix024_power.opt_pso.opt_rmo.opt.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/mix024_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix024_power.opt_pso.opt_rmo.opt.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 [2024-06-27 18:24:47,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:24:47,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:24:47,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:24:47,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:24:47,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:24:47,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:24:47,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:24:47,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:24:47,531 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:24:47,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:24:47,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:24:47,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:24:47,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:24:47,533 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:24:47,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:24:47,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:24:47,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:24:47,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:24:47,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:24:47,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:24:47,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:24:47,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:24:47,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:24:47,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:24:47,536 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:24:47,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:24:47,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:24:47,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:24:47,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:24:47,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:24:47,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:24:47,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:24:47,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:24:47,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:24:47,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:24:47,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:24:47,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:24:47,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:24:47,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:24:47,540 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:24:47,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:24:47,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:24:47,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:24:47,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:24:47,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:24:47,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:24:47,767 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:24:47,767 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:24:47,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix024_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-27 18:24:47,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:24:47,941 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:24:47,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix024_power.opt_pso.opt_rmo.opt.i [2024-06-27 18:24:49,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:24:49,317 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:24:49,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix024_power.opt_pso.opt_rmo.opt.i [2024-06-27 18:24:49,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2ba8e6e/de8d500f3817478c9fa46c03f5cb3087/FLAG0ac74600c [2024-06-27 18:24:49,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2ba8e6e/de8d500f3817478c9fa46c03f5cb3087 [2024-06-27 18:24:49,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:24:49,344 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:24:49,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:24:49,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:24:49,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:24:49,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:24:47" (1/2) ... [2024-06-27 18:24:49,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5727c22b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:24:49, skipping insertion in model container [2024-06-27 18:24:49,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:24:47" (1/2) ... [2024-06-27 18:24:49,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b3c2da4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:24:49, skipping insertion in model container [2024-06-27 18:24:49,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:24:49" (2/2) ... [2024-06-27 18:24:49,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5727c22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:49, skipping insertion in model container [2024-06-27 18:24:49,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:24:49" (2/2) ... [2024-06-27 18:24:49,354 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:24:49,441 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:24:49,442 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((((! multithreaded || y$read_delayed == (_Bool)0) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0) [2024-06-27 18:24:49,442 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((! multithreaded || y$read_delayed == (_Bool)0) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0) [2024-06-27 18:24:49,443 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((! multithreaded || y$read_delayed == (_Bool)0) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0) [2024-06-27 18:24:49,443 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:24:49,443 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-27 18:24:49,479 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:24:49,713 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/mix024_power.opt_pso.opt_rmo.opt.i[1009,1022] [2024-06-27 18:24:49,945 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:24:49,952 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:24:49,984 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/mix024_power.opt_pso.opt_rmo.opt.i[1009,1022] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:24:50,085 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:24:50,123 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:24:50,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50 WrapperNode [2024-06-27 18:24:50,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:24:50,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:24:50,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:24:50,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:24:50,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,190 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-27 18:24:50,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:24:50,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:24:50,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:24:50,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:24:50,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,237 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]. [2024-06-27 18:24:50,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:24:50,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:24:50,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:24:50,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:24:50,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (1/1) ... [2024-06-27 18:24:50,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:24:50,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:24:50,302 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) [2024-06-27 18:24:50,317 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 [2024-06-27 18:24:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:24:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:24:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:24:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:24:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:24:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:24:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:24:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:24:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:24:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:24:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:24:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:24:50,343 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:24:50,440 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:24:50,444 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:24:50,724 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:24:50,724 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:24:50,837 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:24:50,837 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:24:50,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:24:50 BoogieIcfgContainer [2024-06-27 18:24:50,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:24:50,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:24:50,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:24:50,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:24:50,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:24:47" (1/4) ... [2024-06-27 18:24:50,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b28896 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:24:50, skipping insertion in model container [2024-06-27 18:24:50,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:24:49" (2/4) ... [2024-06-27 18:24:50,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b28896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:24:50, skipping insertion in model container [2024-06-27 18:24:50,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:50" (3/4) ... [2024-06-27 18:24:50,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b28896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:24:50, skipping insertion in model container [2024-06-27 18:24:50,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:24:50" (4/4) ... [2024-06-27 18:24:50,845 INFO L112 eAbstractionObserver]: Analyzing ICFG mix024_power.opt_pso.opt_rmo.opt.i [2024-06-27 18:24:50,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:24:50,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:24:50,880 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:24:50,941 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:24:50,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:24:50,989 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 18:24:50,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:24:50,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-27 18:24:50,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:24:50,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-27 18:24:51,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:24:51,013 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;@33bd6a07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:24:51,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:24:51,018 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:24:51,019 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:24:51,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:24:51,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:51,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:24:51,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:51,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash 332448447, now seen corresponding path program 1 times [2024-06-27 18:24:51,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66290467] [2024-06-27 18:24:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:51,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:51,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:51,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66290467] [2024-06-27 18:24:51,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66290467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:51,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:51,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:24:51,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653065818] [2024-06-27 18:24:51,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:51,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:24:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:24:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:24:51,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 18:24:51,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:51,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:51,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 18:24:51,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:52,507 INFO L124 PetriNetUnfolderBase]: 3748/6318 cut-off events. [2024-06-27 18:24:52,507 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-27 18:24:52,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11829 conditions, 6318 events. 3748/6318 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42992 event pairs, 3067 based on Foata normal form. 169/5902 useless extension candidates. Maximal degree in co-relation 11817. Up to 5396 conditions per place. [2024-06-27 18:24:52,632 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-27 18:24:52,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 227 flow [2024-06-27 18:24:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:24:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:24:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 18:24:52,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2024-06-27 18:24:52,668 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 102 transitions. [2024-06-27 18:24:52,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 227 flow [2024-06-27 18:24:52,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:52,717 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-27 18:24:52,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 18:24:52,736 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 18:24:52,737 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-27 18:24:52,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:52,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:52,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:52,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:24:52,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:52,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1655411870, now seen corresponding path program 1 times [2024-06-27 18:24:52,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:52,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839417931] [2024-06-27 18:24:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:52,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:53,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:53,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839417931] [2024-06-27 18:24:53,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839417931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:53,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:53,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:24:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008452989] [2024-06-27 18:24:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:24:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:53,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:24:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:24:53,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:24:53,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:53,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:53,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:24:53,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:54,099 INFO L124 PetriNetUnfolderBase]: 4489/7375 cut-off events. [2024-06-27 18:24:54,099 INFO L125 PetriNetUnfolderBase]: For 969/969 co-relation queries the response was YES. [2024-06-27 18:24:54,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15407 conditions, 7375 events. 4489/7375 cut-off events. For 969/969 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49273 event pairs, 3306 based on Foata normal form. 3/6849 useless extension candidates. Maximal degree in co-relation 15395. Up to 6405 conditions per place. [2024-06-27 18:24:54,139 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 53 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-27 18:24:54,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 323 flow [2024-06-27 18:24:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:24:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:24:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 18:24:54,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581632653061225 [2024-06-27 18:24:54,144 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 4 states and 129 transitions. [2024-06-27 18:24:54,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 323 flow [2024-06-27 18:24:54,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:24:54,147 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 179 flow [2024-06-27 18:24:54,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 18:24:54,148 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-27 18:24:54,148 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 179 flow [2024-06-27 18:24:54,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:54,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:54,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:54,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:24:54,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:54,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash -221838452, now seen corresponding path program 1 times [2024-06-27 18:24:54,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:54,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738027409] [2024-06-27 18:24:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:54,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:54,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738027409] [2024-06-27 18:24:54,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738027409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:54,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:54,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:24:54,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959977236] [2024-06-27 18:24:54,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:54,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:24:54,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:54,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:24:54,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:24:54,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:24:54,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:54,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:54,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:24:54,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:55,367 INFO L124 PetriNetUnfolderBase]: 5286/7834 cut-off events. [2024-06-27 18:24:55,368 INFO L125 PetriNetUnfolderBase]: For 2741/2741 co-relation queries the response was YES. [2024-06-27 18:24:55,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18835 conditions, 7834 events. 5286/7834 cut-off events. For 2741/2741 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 46608 event pairs, 2516 based on Foata normal form. 3/7514 useless extension candidates. Maximal degree in co-relation 18821. Up to 7502 conditions per place. [2024-06-27 18:24:55,494 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 65 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 18:24:55,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 90 transitions, 433 flow [2024-06-27 18:24:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:24:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:24:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-27 18:24:55,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636734693877551 [2024-06-27 18:24:55,496 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 179 flow. Second operand 5 states and 156 transitions. [2024-06-27 18:24:55,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 90 transitions, 433 flow [2024-06-27 18:24:55,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 90 transitions, 414 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:55,499 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 225 flow [2024-06-27 18:24:55,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-06-27 18:24:55,500 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-06-27 18:24:55,500 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 225 flow [2024-06-27 18:24:55,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:55,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:55,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:55,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:24:55,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:55,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash -222502284, now seen corresponding path program 1 times [2024-06-27 18:24:55,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:55,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321767156] [2024-06-27 18:24:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:55,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:55,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:55,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321767156] [2024-06-27 18:24:55,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321767156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:55,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:55,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:24:55,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015654616] [2024-06-27 18:24:55,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:55,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:24:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:24:55,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:24:55,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 49 [2024-06-27 18:24:55,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:55,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:55,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 49 [2024-06-27 18:24:55,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:55,749 INFO L124 PetriNetUnfolderBase]: 1013/2158 cut-off events. [2024-06-27 18:24:55,749 INFO L125 PetriNetUnfolderBase]: For 1129/1295 co-relation queries the response was YES. [2024-06-27 18:24:55,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 2158 events. 1013/2158 cut-off events. For 1129/1295 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16293 event pairs, 256 based on Foata normal form. 2/1992 useless extension candidates. Maximal degree in co-relation 4637. Up to 1274 conditions per place. [2024-06-27 18:24:55,762 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 30 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-06-27 18:24:55,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 292 flow [2024-06-27 18:24:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:24:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:24:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-06-27 18:24:55,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7755102040816326 [2024-06-27 18:24:55,763 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 225 flow. Second operand 3 states and 114 transitions. [2024-06-27 18:24:55,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 292 flow [2024-06-27 18:24:55,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 268 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:55,766 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 182 flow [2024-06-27 18:24:55,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-27 18:24:55,767 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-06-27 18:24:55,767 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 182 flow [2024-06-27 18:24:55,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:55,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:55,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:55,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:24:55,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:55,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1292758975, now seen corresponding path program 1 times [2024-06-27 18:24:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:55,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412334210] [2024-06-27 18:24:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412334210] [2024-06-27 18:24:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412334210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:56,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:56,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:24:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526597527] [2024-06-27 18:24:56,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:56,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:24:56,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:24:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:24:56,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:24:56,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:56,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:56,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:24:56,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:57,288 INFO L124 PetriNetUnfolderBase]: 4479/7332 cut-off events. [2024-06-27 18:24:57,289 INFO L125 PetriNetUnfolderBase]: For 6193/6193 co-relation queries the response was YES. [2024-06-27 18:24:57,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17603 conditions, 7332 events. 4479/7332 cut-off events. For 6193/6193 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 47701 event pairs, 2527 based on Foata normal form. 6/7084 useless extension candidates. Maximal degree in co-relation 17588. Up to 6321 conditions per place. [2024-06-27 18:24:57,317 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 71 selfloop transitions, 13 changer transitions 5/101 dead transitions. [2024-06-27 18:24:57,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 486 flow [2024-06-27 18:24:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:24:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:24:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-27 18:24:57,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-27 18:24:57,319 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 182 flow. Second operand 6 states and 182 transitions. [2024-06-27 18:24:57,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 486 flow [2024-06-27 18:24:57,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 101 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:57,323 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 230 flow [2024-06-27 18:24:57,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-27 18:24:57,323 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-06-27 18:24:57,324 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 230 flow [2024-06-27 18:24:57,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:57,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:57,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:57,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:24:57,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:57,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 923412236, now seen corresponding path program 1 times [2024-06-27 18:24:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289420674] [2024-06-27 18:24:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:57,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:57,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289420674] [2024-06-27 18:24:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289420674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:57,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:57,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:24:57,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081592168] [2024-06-27 18:24:57,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:57,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:24:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:24:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:24:57,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:24:57,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:57,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:57,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:24:57,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:58,485 INFO L124 PetriNetUnfolderBase]: 3547/6216 cut-off events. [2024-06-27 18:24:58,485 INFO L125 PetriNetUnfolderBase]: For 6643/6647 co-relation queries the response was YES. [2024-06-27 18:24:58,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15414 conditions, 6216 events. 3547/6216 cut-off events. For 6643/6647 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 42537 event pairs, 1888 based on Foata normal form. 6/5968 useless extension candidates. Maximal degree in co-relation 15397. Up to 5111 conditions per place. [2024-06-27 18:24:58,514 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 57 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-06-27 18:24:58,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 440 flow [2024-06-27 18:24:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:24:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:24:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-27 18:24:58,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387755102040817 [2024-06-27 18:24:58,516 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 230 flow. Second operand 5 states and 132 transitions. [2024-06-27 18:24:58,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 440 flow [2024-06-27 18:24:58,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 400 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:24:58,519 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 273 flow [2024-06-27 18:24:58,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-27 18:24:58,520 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-27 18:24:58,520 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 273 flow [2024-06-27 18:24:58,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:58,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:58,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:58,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:24:58,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:58,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:58,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1438990887, now seen corresponding path program 1 times [2024-06-27 18:24:58,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:58,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748644921] [2024-06-27 18:24:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:58,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:59,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:59,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748644921] [2024-06-27 18:24:59,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748644921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:59,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:59,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:24:59,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048135251] [2024-06-27 18:24:59,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:59,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:24:59,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:59,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:24:59,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:24:59,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:24:59,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:59,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:59,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:24:59,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:59,880 INFO L124 PetriNetUnfolderBase]: 4288/7260 cut-off events. [2024-06-27 18:24:59,881 INFO L125 PetriNetUnfolderBase]: For 10439/10443 co-relation queries the response was YES. [2024-06-27 18:24:59,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19269 conditions, 7260 events. 4288/7260 cut-off events. For 10439/10443 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 48874 event pairs, 2257 based on Foata normal form. 7/7056 useless extension candidates. Maximal degree in co-relation 19249. Up to 6086 conditions per place. [2024-06-27 18:24:59,927 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 70 selfloop transitions, 19 changer transitions 0/101 dead transitions. [2024-06-27 18:24:59,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 595 flow [2024-06-27 18:24:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:24:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:24:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 18:24:59,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 18:24:59,929 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 273 flow. Second operand 6 states and 159 transitions. [2024-06-27 18:24:59,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 595 flow [2024-06-27 18:24:59,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 576 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:59,933 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 391 flow [2024-06-27 18:24:59,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-27 18:24:59,934 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-27 18:24:59,934 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 391 flow [2024-06-27 18:24:59,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:59,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:59,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:59,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:24:59,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:59,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1409106819, now seen corresponding path program 1 times [2024-06-27 18:24:59,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:59,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682917406] [2024-06-27 18:24:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:59,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:00,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682917406] [2024-06-27 18:25:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682917406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:00,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:00,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192898014] [2024-06-27 18:25:00,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:00,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:00,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:00,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:00,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:25:00,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:00,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:00,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:25:00,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:01,735 INFO L124 PetriNetUnfolderBase]: 4575/7698 cut-off events. [2024-06-27 18:25:01,736 INFO L125 PetriNetUnfolderBase]: For 17278/17292 co-relation queries the response was YES. [2024-06-27 18:25:01,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22837 conditions, 7698 events. 4575/7698 cut-off events. For 17278/17292 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 51892 event pairs, 2341 based on Foata normal form. 6/7461 useless extension candidates. Maximal degree in co-relation 22813. Up to 6516 conditions per place. [2024-06-27 18:25:01,790 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 79 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2024-06-27 18:25:01,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 107 transitions, 685 flow [2024-06-27 18:25:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:01,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 18:25:01,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272108843537415 [2024-06-27 18:25:01,794 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 391 flow. Second operand 6 states and 155 transitions. [2024-06-27 18:25:01,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 107 transitions, 685 flow [2024-06-27 18:25:01,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 669 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:01,802 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 472 flow [2024-06-27 18:25:01,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-06-27 18:25:01,804 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-27 18:25:01,804 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 472 flow [2024-06-27 18:25:01,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:01,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:01,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:01,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:25:01,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:01,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:01,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1659054549, now seen corresponding path program 2 times [2024-06-27 18:25:01,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:01,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122290230] [2024-06-27 18:25:01,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:01,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:02,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:02,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122290230] [2024-06-27 18:25:02,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122290230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:02,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:02,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:02,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773699814] [2024-06-27 18:25:02,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:02,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:02,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:02,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:02,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:25:02,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 472 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:02,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:02,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:25:02,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:03,315 INFO L124 PetriNetUnfolderBase]: 4553/7756 cut-off events. [2024-06-27 18:25:03,315 INFO L125 PetriNetUnfolderBase]: For 22285/22319 co-relation queries the response was YES. [2024-06-27 18:25:03,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24290 conditions, 7756 events. 4553/7756 cut-off events. For 22285/22319 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 52771 event pairs, 2283 based on Foata normal form. 18/7501 useless extension candidates. Maximal degree in co-relation 24262. Up to 6452 conditions per place. [2024-06-27 18:25:03,361 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 76 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-06-27 18:25:03,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 109 transitions, 760 flow [2024-06-27 18:25:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 18:25:03,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272108843537415 [2024-06-27 18:25:03,362 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 472 flow. Second operand 6 states and 155 transitions. [2024-06-27 18:25:03,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 109 transitions, 760 flow [2024-06-27 18:25:03,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 721 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:03,371 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 513 flow [2024-06-27 18:25:03,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=513, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-27 18:25:03,372 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-27 18:25:03,372 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 513 flow [2024-06-27 18:25:03,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:03,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:03,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:03,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:25:03,373 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:03,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1643003496, now seen corresponding path program 1 times [2024-06-27 18:25:03,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:03,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498311622] [2024-06-27 18:25:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:03,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:04,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:04,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498311622] [2024-06-27 18:25:04,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498311622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:04,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:04,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:04,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873727115] [2024-06-27 18:25:04,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:04,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:04,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:04,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:04,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:04,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:25:04,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 513 flow. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:04,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:04,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:25:04,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:05,140 INFO L124 PetriNetUnfolderBase]: 4194/7015 cut-off events. [2024-06-27 18:25:05,140 INFO L125 PetriNetUnfolderBase]: For 25391/25405 co-relation queries the response was YES. [2024-06-27 18:25:05,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23294 conditions, 7015 events. 4194/7015 cut-off events. For 25391/25405 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46726 event pairs, 1812 based on Foata normal form. 6/6753 useless extension candidates. Maximal degree in co-relation 23266. Up to 5865 conditions per place. [2024-06-27 18:25:05,187 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 105 selfloop transitions, 24 changer transitions 0/144 dead transitions. [2024-06-27 18:25:05,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 144 transitions, 959 flow [2024-06-27 18:25:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-06-27 18:25:05,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-06-27 18:25:05,189 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 513 flow. Second operand 8 states and 228 transitions. [2024-06-27 18:25:05,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 144 transitions, 959 flow [2024-06-27 18:25:05,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 144 transitions, 903 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:05,201 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 552 flow [2024-06-27 18:25:05,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=552, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-06-27 18:25:05,202 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2024-06-27 18:25:05,202 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 552 flow [2024-06-27 18:25:05,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:05,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:05,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:05,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:25:05,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:05,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1659043637, now seen corresponding path program 1 times [2024-06-27 18:25:05,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:05,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733854452] [2024-06-27 18:25:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:05,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:06,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:06,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733854452] [2024-06-27 18:25:06,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733854452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:06,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:06,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:06,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707464786] [2024-06-27 18:25:06,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:06,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:06,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:06,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:06,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:25:06,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 552 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:06,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:06,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:25:06,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:06,949 INFO L124 PetriNetUnfolderBase]: 4312/7447 cut-off events. [2024-06-27 18:25:06,949 INFO L125 PetriNetUnfolderBase]: For 31544/31550 co-relation queries the response was YES. [2024-06-27 18:25:06,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25426 conditions, 7447 events. 4312/7447 cut-off events. For 31544/31550 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51219 event pairs, 1808 based on Foata normal form. 9/7208 useless extension candidates. Maximal degree in co-relation 25396. Up to 6100 conditions per place. [2024-06-27 18:25:07,001 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 92 selfloop transitions, 23 changer transitions 0/127 dead transitions. [2024-06-27 18:25:07,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 127 transitions, 950 flow [2024-06-27 18:25:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 18:25:07,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-27 18:25:07,004 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 552 flow. Second operand 7 states and 184 transitions. [2024-06-27 18:25:07,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 127 transitions, 950 flow [2024-06-27 18:25:07,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 883 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:07,020 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 582 flow [2024-06-27 18:25:07,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2024-06-27 18:25:07,021 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-27 18:25:07,021 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 582 flow [2024-06-27 18:25:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:07,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:07,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:07,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:25:07,023 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:07,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash -128361217, now seen corresponding path program 1 times [2024-06-27 18:25:07,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:07,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879437880] [2024-06-27 18:25:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:07,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:07,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:07,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879437880] [2024-06-27 18:25:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879437880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:07,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:07,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:07,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570759959] [2024-06-27 18:25:07,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:07,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:07,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:07,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:07,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:07,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 582 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:07,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:07,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:07,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:08,691 INFO L124 PetriNetUnfolderBase]: 4916/7846 cut-off events. [2024-06-27 18:25:08,691 INFO L125 PetriNetUnfolderBase]: For 40114/40145 co-relation queries the response was YES. [2024-06-27 18:25:08,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28898 conditions, 7846 events. 4916/7846 cut-off events. For 40114/40145 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 49819 event pairs, 1988 based on Foata normal form. 3/7616 useless extension candidates. Maximal degree in co-relation 28866. Up to 6898 conditions per place. [2024-06-27 18:25:08,744 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 103 selfloop transitions, 17 changer transitions 0/134 dead transitions. [2024-06-27 18:25:08,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 134 transitions, 971 flow [2024-06-27 18:25:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:25:08,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:25:08,746 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 582 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:25:08,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 134 transitions, 971 flow [2024-06-27 18:25:08,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 134 transitions, 904 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:08,767 INFO L231 Difference]: Finished difference. Result has 88 places, 99 transitions, 635 flow [2024-06-27 18:25:08,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=635, PETRI_PLACES=88, PETRI_TRANSITIONS=99} [2024-06-27 18:25:08,768 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-27 18:25:08,768 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 99 transitions, 635 flow [2024-06-27 18:25:08,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:08,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:08,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:08,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:25:08,769 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:08,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash -732637560, now seen corresponding path program 1 times [2024-06-27 18:25:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:08,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018697951] [2024-06-27 18:25:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:09,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018697951] [2024-06-27 18:25:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018697951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:09,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:09,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:09,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515998827] [2024-06-27 18:25:09,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:09,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:09,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:09,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:09,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:09,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:09,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 635 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:09,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:09,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:09,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:10,419 INFO L124 PetriNetUnfolderBase]: 5130/8225 cut-off events. [2024-06-27 18:25:10,419 INFO L125 PetriNetUnfolderBase]: For 49249/49249 co-relation queries the response was YES. [2024-06-27 18:25:10,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31603 conditions, 8225 events. 5130/8225 cut-off events. For 49249/49249 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 52959 event pairs, 2095 based on Foata normal form. 3/8030 useless extension candidates. Maximal degree in co-relation 31569. Up to 7235 conditions per place. [2024-06-27 18:25:10,472 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 109 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-27 18:25:10,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 148 transitions, 1183 flow [2024-06-27 18:25:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 18:25:10,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276967930029155 [2024-06-27 18:25:10,473 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 635 flow. Second operand 7 states and 181 transitions. [2024-06-27 18:25:10,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 148 transitions, 1183 flow [2024-06-27 18:25:10,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 148 transitions, 1122 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:10,494 INFO L231 Difference]: Finished difference. Result has 93 places, 111 transitions, 778 flow [2024-06-27 18:25:10,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=778, PETRI_PLACES=93, PETRI_TRANSITIONS=111} [2024-06-27 18:25:10,494 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-27 18:25:10,494 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 111 transitions, 778 flow [2024-06-27 18:25:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:10,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:10,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:10,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:25:10,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:10,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1959664519, now seen corresponding path program 2 times [2024-06-27 18:25:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731279845] [2024-06-27 18:25:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:11,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:11,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731279845] [2024-06-27 18:25:11,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731279845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:11,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:11,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:11,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766632302] [2024-06-27 18:25:11,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:11,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:11,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:11,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:11,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 111 transitions, 778 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:11,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:11,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:11,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:12,197 INFO L124 PetriNetUnfolderBase]: 5067/8047 cut-off events. [2024-06-27 18:25:12,198 INFO L125 PetriNetUnfolderBase]: For 61194/61271 co-relation queries the response was YES. [2024-06-27 18:25:12,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33520 conditions, 8047 events. 5067/8047 cut-off events. For 61194/61271 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 50875 event pairs, 1942 based on Foata normal form. 3/7809 useless extension candidates. Maximal degree in co-relation 33483. Up to 7040 conditions per place. [2024-06-27 18:25:12,237 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 109 selfloop transitions, 22 changer transitions 0/148 dead transitions. [2024-06-27 18:25:12,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 148 transitions, 1186 flow [2024-06-27 18:25:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:25:12,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:25:12,242 INFO L175 Difference]: Start difference. First operand has 93 places, 111 transitions, 778 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:25:12,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 148 transitions, 1186 flow [2024-06-27 18:25:12,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 1126 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:12,268 INFO L231 Difference]: Finished difference. Result has 98 places, 114 transitions, 822 flow [2024-06-27 18:25:12,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=822, PETRI_PLACES=98, PETRI_TRANSITIONS=114} [2024-06-27 18:25:12,270 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-27 18:25:12,270 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 114 transitions, 822 flow [2024-06-27 18:25:12,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:12,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:12,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:12,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:25:12,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:12,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:12,271 INFO L85 PathProgramCache]: Analyzing trace with hash 109243832, now seen corresponding path program 2 times [2024-06-27 18:25:12,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:12,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031273864] [2024-06-27 18:25:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:12,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:13,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031273864] [2024-06-27 18:25:13,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031273864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:13,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:13,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:13,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027441441] [2024-06-27 18:25:13,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:13,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:13,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:13,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:13,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:13,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 114 transitions, 822 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:13,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:13,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:13,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:14,028 INFO L124 PetriNetUnfolderBase]: 5231/8692 cut-off events. [2024-06-27 18:25:14,029 INFO L125 PetriNetUnfolderBase]: For 71688/71715 co-relation queries the response was YES. [2024-06-27 18:25:14,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36166 conditions, 8692 events. 5231/8692 cut-off events. For 71688/71715 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 58006 event pairs, 2034 based on Foata normal form. 21/8418 useless extension candidates. Maximal degree in co-relation 36127. Up to 7168 conditions per place. [2024-06-27 18:25:14,098 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 103 selfloop transitions, 46 changer transitions 0/163 dead transitions. [2024-06-27 18:25:14,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 163 transitions, 1482 flow [2024-06-27 18:25:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:25:14,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2024-06-27 18:25:14,100 INFO L175 Difference]: Start difference. First operand has 98 places, 114 transitions, 822 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:25:14,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 163 transitions, 1482 flow [2024-06-27 18:25:14,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 163 transitions, 1402 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:14,139 INFO L231 Difference]: Finished difference. Result has 101 places, 126 transitions, 1021 flow [2024-06-27 18:25:14,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1021, PETRI_PLACES=101, PETRI_TRANSITIONS=126} [2024-06-27 18:25:14,140 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-27 18:25:14,140 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 126 transitions, 1021 flow [2024-06-27 18:25:14,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:14,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:14,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:25:14,141 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:14,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash 108917402, now seen corresponding path program 3 times [2024-06-27 18:25:14,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:14,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529624917] [2024-06-27 18:25:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:14,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529624917] [2024-06-27 18:25:14,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529624917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:14,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:14,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:14,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005896587] [2024-06-27 18:25:14,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:14,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:14,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:14,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:15,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:15,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 126 transitions, 1021 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:15,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:15,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:15,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:15,968 INFO L124 PetriNetUnfolderBase]: 5225/8679 cut-off events. [2024-06-27 18:25:15,968 INFO L125 PetriNetUnfolderBase]: For 82377/82404 co-relation queries the response was YES. [2024-06-27 18:25:15,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38175 conditions, 8679 events. 5225/8679 cut-off events. For 82377/82404 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 57872 event pairs, 2039 based on Foata normal form. 21/8407 useless extension candidates. Maximal degree in co-relation 38134. Up to 7164 conditions per place. [2024-06-27 18:25:16,033 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 107 selfloop transitions, 41 changer transitions 0/162 dead transitions. [2024-06-27 18:25:16,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 162 transitions, 1513 flow [2024-06-27 18:25:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:25:16,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:25:16,035 INFO L175 Difference]: Start difference. First operand has 101 places, 126 transitions, 1021 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:25:16,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 162 transitions, 1513 flow [2024-06-27 18:25:16,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 162 transitions, 1414 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:16,098 INFO L231 Difference]: Finished difference. Result has 106 places, 126 transitions, 1014 flow [2024-06-27 18:25:16,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1014, PETRI_PLACES=106, PETRI_TRANSITIONS=126} [2024-06-27 18:25:16,098 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-27 18:25:16,098 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 126 transitions, 1014 flow [2024-06-27 18:25:16,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:16,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:16,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:16,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:25:16,099 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:16,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash 108917123, now seen corresponding path program 3 times [2024-06-27 18:25:16,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:16,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469159460] [2024-06-27 18:25:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:16,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:16,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469159460] [2024-06-27 18:25:16,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469159460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:16,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:16,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778780646] [2024-06-27 18:25:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:16,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:16,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:16,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 1014 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:16,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:16,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:16,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:17,812 INFO L124 PetriNetUnfolderBase]: 5119/8369 cut-off events. [2024-06-27 18:25:17,812 INFO L125 PetriNetUnfolderBase]: For 77822/77913 co-relation queries the response was YES. [2024-06-27 18:25:17,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36175 conditions, 8369 events. 5119/8369 cut-off events. For 77822/77913 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 54264 event pairs, 1879 based on Foata normal form. 13/8068 useless extension candidates. Maximal degree in co-relation 36132. Up to 7050 conditions per place. [2024-06-27 18:25:17,881 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 113 selfloop transitions, 29 changer transitions 0/162 dead transitions. [2024-06-27 18:25:17,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 1456 flow [2024-06-27 18:25:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:25:17,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:25:17,897 INFO L175 Difference]: Start difference. First operand has 106 places, 126 transitions, 1014 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:25:17,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 1456 flow [2024-06-27 18:25:18,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 1311 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:18,024 INFO L231 Difference]: Finished difference. Result has 105 places, 129 transitions, 993 flow [2024-06-27 18:25:18,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=993, PETRI_PLACES=105, PETRI_TRANSITIONS=129} [2024-06-27 18:25:18,026 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-27 18:25:18,026 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 129 transitions, 993 flow [2024-06-27 18:25:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:18,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:18,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:18,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:25:18,026 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:18,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:18,027 INFO L85 PathProgramCache]: Analyzing trace with hash 109255736, now seen corresponding path program 1 times [2024-06-27 18:25:18,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:18,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308519329] [2024-06-27 18:25:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:18,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:19,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:19,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308519329] [2024-06-27 18:25:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308519329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:19,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449052811] [2024-06-27 18:25:19,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:19,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:19,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:25:19,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 129 transitions, 993 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:19,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:19,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:25:19,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:20,297 INFO L124 PetriNetUnfolderBase]: 4549/7746 cut-off events. [2024-06-27 18:25:20,297 INFO L125 PetriNetUnfolderBase]: For 76734/76734 co-relation queries the response was YES. [2024-06-27 18:25:20,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33374 conditions, 7746 events. 4549/7746 cut-off events. For 76734/76734 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 52333 event pairs, 1669 based on Foata normal form. 6/7522 useless extension candidates. Maximal degree in co-relation 33333. Up to 6314 conditions per place. [2024-06-27 18:25:20,359 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 136 selfloop transitions, 41 changer transitions 0/193 dead transitions. [2024-06-27 18:25:20,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 193 transitions, 1819 flow [2024-06-27 18:25:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 18:25:20,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382653061224489 [2024-06-27 18:25:20,360 INFO L175 Difference]: Start difference. First operand has 105 places, 129 transitions, 993 flow. Second operand 8 states and 211 transitions. [2024-06-27 18:25:20,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 193 transitions, 1819 flow [2024-06-27 18:25:20,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 193 transitions, 1719 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:20,404 INFO L231 Difference]: Finished difference. Result has 111 places, 148 transitions, 1303 flow [2024-06-27 18:25:20,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1303, PETRI_PLACES=111, PETRI_TRANSITIONS=148} [2024-06-27 18:25:20,405 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-27 18:25:20,405 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 148 transitions, 1303 flow [2024-06-27 18:25:20,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:20,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:20,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:20,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:25:20,406 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:20,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:20,406 INFO L85 PathProgramCache]: Analyzing trace with hash -247101171, now seen corresponding path program 1 times [2024-06-27 18:25:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:20,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255145868] [2024-06-27 18:25:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:20,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:20,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:20,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255145868] [2024-06-27 18:25:20,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255145868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:20,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:20,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983918685] [2024-06-27 18:25:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:20,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:20,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:20,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:20,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:25:20,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 148 transitions, 1303 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:20,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:20,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:25:20,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:21,866 INFO L124 PetriNetUnfolderBase]: 4545/7555 cut-off events. [2024-06-27 18:25:21,866 INFO L125 PetriNetUnfolderBase]: For 88952/88952 co-relation queries the response was YES. [2024-06-27 18:25:21,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35362 conditions, 7555 events. 4545/7555 cut-off events. For 88952/88952 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 50370 event pairs, 1786 based on Foata normal form. 1/7375 useless extension candidates. Maximal degree in co-relation 35317. Up to 6498 conditions per place. [2024-06-27 18:25:21,917 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 132 selfloop transitions, 14 changer transitions 0/162 dead transitions. [2024-06-27 18:25:21,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 1627 flow [2024-06-27 18:25:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:25:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:25:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 18:25:21,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-06-27 18:25:21,919 INFO L175 Difference]: Start difference. First operand has 111 places, 148 transitions, 1303 flow. Second operand 5 states and 124 transitions. [2024-06-27 18:25:21,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 1627 flow [2024-06-27 18:25:21,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 162 transitions, 1479 flow, removed 73 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:21,972 INFO L231 Difference]: Finished difference. Result has 115 places, 148 transitions, 1193 flow [2024-06-27 18:25:21,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1193, PETRI_PLACES=115, PETRI_TRANSITIONS=148} [2024-06-27 18:25:21,972 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-27 18:25:21,972 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 148 transitions, 1193 flow [2024-06-27 18:25:21,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:21,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:21,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:21,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:25:21,973 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:21,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash 315619530, now seen corresponding path program 1 times [2024-06-27 18:25:21,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:21,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284273071] [2024-06-27 18:25:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:22,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:22,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284273071] [2024-06-27 18:25:22,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284273071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:22,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:22,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816998361] [2024-06-27 18:25:22,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:22,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:22,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:22,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:22,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:22,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 148 transitions, 1193 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:22,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:22,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:22,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:23,778 INFO L124 PetriNetUnfolderBase]: 5195/8282 cut-off events. [2024-06-27 18:25:23,778 INFO L125 PetriNetUnfolderBase]: For 103340/103404 co-relation queries the response was YES. [2024-06-27 18:25:23,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38672 conditions, 8282 events. 5195/8282 cut-off events. For 103340/103404 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 52824 event pairs, 1915 based on Foata normal form. 20/8061 useless extension candidates. Maximal degree in co-relation 38624. Up to 7194 conditions per place. [2024-06-27 18:25:23,843 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 154 selfloop transitions, 21 changer transitions 0/200 dead transitions. [2024-06-27 18:25:23,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 200 transitions, 1746 flow [2024-06-27 18:25:23,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:25:23,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-27 18:25:23,845 INFO L175 Difference]: Start difference. First operand has 115 places, 148 transitions, 1193 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:25:23,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 200 transitions, 1746 flow [2024-06-27 18:25:23,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 200 transitions, 1707 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:24,000 INFO L231 Difference]: Finished difference. Result has 120 places, 155 transitions, 1306 flow [2024-06-27 18:25:24,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1306, PETRI_PLACES=120, PETRI_TRANSITIONS=155} [2024-06-27 18:25:24,000 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-27 18:25:24,000 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 155 transitions, 1306 flow [2024-06-27 18:25:24,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:24,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:24,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:24,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:25:24,001 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:24,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:24,002 INFO L85 PathProgramCache]: Analyzing trace with hash 315770438, now seen corresponding path program 1 times [2024-06-27 18:25:24,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:24,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426407939] [2024-06-27 18:25:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:24,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:24,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426407939] [2024-06-27 18:25:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426407939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:24,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225329953] [2024-06-27 18:25:24,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:24,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:24,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:24,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:25:24,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 155 transitions, 1306 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:24,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:24,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:25:24,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:26,003 INFO L124 PetriNetUnfolderBase]: 5647/8891 cut-off events. [2024-06-27 18:25:26,003 INFO L125 PetriNetUnfolderBase]: For 120193/120193 co-relation queries the response was YES. [2024-06-27 18:25:26,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43118 conditions, 8891 events. 5647/8891 cut-off events. For 120193/120193 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 56040 event pairs, 2027 based on Foata normal form. 3/8685 useless extension candidates. Maximal degree in co-relation 43069. Up to 7891 conditions per place. [2024-06-27 18:25:26,082 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 171 selfloop transitions, 33 changer transitions 0/213 dead transitions. [2024-06-27 18:25:26,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 213 transitions, 2114 flow [2024-06-27 18:25:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:25:26,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-06-27 18:25:26,084 INFO L175 Difference]: Start difference. First operand has 120 places, 155 transitions, 1306 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:25:26,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 213 transitions, 2114 flow [2024-06-27 18:25:26,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 213 transitions, 2021 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:26,165 INFO L231 Difference]: Finished difference. Result has 125 places, 167 transitions, 1475 flow [2024-06-27 18:25:26,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1475, PETRI_PLACES=125, PETRI_TRANSITIONS=167} [2024-06-27 18:25:26,166 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-27 18:25:26,166 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 167 transitions, 1475 flow [2024-06-27 18:25:26,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:26,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:26,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:26,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:25:26,167 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:26,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:26,167 INFO L85 PathProgramCache]: Analyzing trace with hash 315770190, now seen corresponding path program 2 times [2024-06-27 18:25:26,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:26,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927836986] [2024-06-27 18:25:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:26,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:26,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927836986] [2024-06-27 18:25:26,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927836986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:26,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:26,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:26,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785669267] [2024-06-27 18:25:26,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:26,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:26,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:26,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:26,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:26,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:26,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 167 transitions, 1475 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:26,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:26,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:26,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:28,041 INFO L124 PetriNetUnfolderBase]: 5371/8524 cut-off events. [2024-06-27 18:25:28,041 INFO L125 PetriNetUnfolderBase]: For 137127/137224 co-relation queries the response was YES. [2024-06-27 18:25:28,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43815 conditions, 8524 events. 5371/8524 cut-off events. For 137127/137224 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54222 event pairs, 1870 based on Foata normal form. 20/8290 useless extension candidates. Maximal degree in co-relation 43763. Up to 7351 conditions per place. [2024-06-27 18:25:28,117 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 161 selfloop transitions, 26 changer transitions 0/215 dead transitions. [2024-06-27 18:25:28,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 215 transitions, 2053 flow [2024-06-27 18:25:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:25:28,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:25:28,119 INFO L175 Difference]: Start difference. First operand has 125 places, 167 transitions, 1475 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:25:28,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 215 transitions, 2053 flow [2024-06-27 18:25:28,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 215 transitions, 1950 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:28,232 INFO L231 Difference]: Finished difference. Result has 130 places, 170 transitions, 1504 flow [2024-06-27 18:25:28,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1504, PETRI_PLACES=130, PETRI_TRANSITIONS=170} [2024-06-27 18:25:28,232 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-27 18:25:28,233 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 170 transitions, 1504 flow [2024-06-27 18:25:28,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:28,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:28,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:28,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:25:28,233 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:28,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 620058566, now seen corresponding path program 3 times [2024-06-27 18:25:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:28,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246034516] [2024-06-27 18:25:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246034516] [2024-06-27 18:25:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246034516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:28,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:28,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:28,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797106565] [2024-06-27 18:25:28,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:28,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:28,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:29,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:29,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 170 transitions, 1504 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:29,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:29,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:29,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:30,178 INFO L124 PetriNetUnfolderBase]: 5417/8594 cut-off events. [2024-06-27 18:25:30,179 INFO L125 PetriNetUnfolderBase]: For 152348/152440 co-relation queries the response was YES. [2024-06-27 18:25:30,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45435 conditions, 8594 events. 5417/8594 cut-off events. For 152348/152440 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54628 event pairs, 1867 based on Foata normal form. 20/8361 useless extension candidates. Maximal degree in co-relation 45381. Up to 7349 conditions per place. [2024-06-27 18:25:30,247 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 156 selfloop transitions, 33 changer transitions 0/217 dead transitions. [2024-06-27 18:25:30,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 217 transitions, 2102 flow [2024-06-27 18:25:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:25:30,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:25:30,249 INFO L175 Difference]: Start difference. First operand has 130 places, 170 transitions, 1504 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:25:30,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 217 transitions, 2102 flow [2024-06-27 18:25:30,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 217 transitions, 1994 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:30,360 INFO L231 Difference]: Finished difference. Result has 132 places, 173 transitions, 1548 flow [2024-06-27 18:25:30,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1548, PETRI_PLACES=132, PETRI_TRANSITIONS=173} [2024-06-27 18:25:30,360 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-06-27 18:25:30,360 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 173 transitions, 1548 flow [2024-06-27 18:25:30,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:30,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:30,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:30,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:25:30,361 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:30,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:30,362 INFO L85 PathProgramCache]: Analyzing trace with hash 620058814, now seen corresponding path program 2 times [2024-06-27 18:25:30,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:30,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140086473] [2024-06-27 18:25:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:30,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140086473] [2024-06-27 18:25:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140086473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:30,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:30,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:30,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272118519] [2024-06-27 18:25:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:30,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:30,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:31,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:25:31,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 173 transitions, 1548 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:31,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:31,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:25:31,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:32,352 INFO L124 PetriNetUnfolderBase]: 5849/9216 cut-off events. [2024-06-27 18:25:32,353 INFO L125 PetriNetUnfolderBase]: For 170825/170825 co-relation queries the response was YES. [2024-06-27 18:25:32,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49580 conditions, 9216 events. 5849/9216 cut-off events. For 170825/170825 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 58390 event pairs, 2028 based on Foata normal form. 3/9001 useless extension candidates. Maximal degree in co-relation 49525. Up to 7980 conditions per place. [2024-06-27 18:25:32,450 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 174 selfloop transitions, 45 changer transitions 0/228 dead transitions. [2024-06-27 18:25:32,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 228 transitions, 2478 flow [2024-06-27 18:25:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:25:32,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:25:32,452 INFO L175 Difference]: Start difference. First operand has 132 places, 173 transitions, 1548 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:25:32,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 228 transitions, 2478 flow [2024-06-27 18:25:32,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 228 transitions, 2350 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:32,578 INFO L231 Difference]: Finished difference. Result has 135 places, 181 transitions, 1668 flow [2024-06-27 18:25:32,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1668, PETRI_PLACES=135, PETRI_TRANSITIONS=181} [2024-06-27 18:25:32,579 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-27 18:25:32,579 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 181 transitions, 1668 flow [2024-06-27 18:25:32,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:32,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:32,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:32,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:25:32,580 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:32,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:32,580 INFO L85 PathProgramCache]: Analyzing trace with hash 620067494, now seen corresponding path program 1 times [2024-06-27 18:25:32,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:32,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541350811] [2024-06-27 18:25:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:32,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:33,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541350811] [2024-06-27 18:25:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541350811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068930772] [2024-06-27 18:25:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:33,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:33,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:33,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 181 transitions, 1668 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:33,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:33,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:33,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:34,743 INFO L124 PetriNetUnfolderBase]: 5645/8976 cut-off events. [2024-06-27 18:25:34,744 INFO L125 PetriNetUnfolderBase]: For 184396/184408 co-relation queries the response was YES. [2024-06-27 18:25:34,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49489 conditions, 8976 events. 5645/8976 cut-off events. For 184396/184408 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 57533 event pairs, 1990 based on Foata normal form. 15/8786 useless extension candidates. Maximal degree in co-relation 49432. Up to 7797 conditions per place. [2024-06-27 18:25:34,833 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 179 selfloop transitions, 30 changer transitions 0/229 dead transitions. [2024-06-27 18:25:34,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 229 transitions, 2394 flow [2024-06-27 18:25:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:25:34,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 18:25:34,835 INFO L175 Difference]: Start difference. First operand has 135 places, 181 transitions, 1668 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:25:34,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 229 transitions, 2394 flow [2024-06-27 18:25:34,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 229 transitions, 2245 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:34,970 INFO L231 Difference]: Finished difference. Result has 138 places, 185 transitions, 1668 flow [2024-06-27 18:25:34,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1668, PETRI_PLACES=138, PETRI_TRANSITIONS=185} [2024-06-27 18:25:34,971 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 83 predicate places. [2024-06-27 18:25:34,971 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 185 transitions, 1668 flow [2024-06-27 18:25:34,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:34,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:34,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:34,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:25:34,972 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:34,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 321371828, now seen corresponding path program 3 times [2024-06-27 18:25:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841751658] [2024-06-27 18:25:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841751658] [2024-06-27 18:25:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841751658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:35,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:35,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777226506] [2024-06-27 18:25:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:35,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:35,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:35,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:25:35,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 185 transitions, 1668 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:35,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:35,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:25:35,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:36,996 INFO L124 PetriNetUnfolderBase]: 5905/9290 cut-off events. [2024-06-27 18:25:36,997 INFO L125 PetriNetUnfolderBase]: For 192554/192554 co-relation queries the response was YES. [2024-06-27 18:25:37,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51809 conditions, 9290 events. 5905/9290 cut-off events. For 192554/192554 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 58662 event pairs, 1976 based on Foata normal form. 3/9076 useless extension candidates. Maximal degree in co-relation 51751. Up to 8055 conditions per place. [2024-06-27 18:25:37,087 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 171 selfloop transitions, 53 changer transitions 0/233 dead transitions. [2024-06-27 18:25:37,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 233 transitions, 2435 flow [2024-06-27 18:25:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:25:37,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-06-27 18:25:37,089 INFO L175 Difference]: Start difference. First operand has 138 places, 185 transitions, 1668 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:25:37,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 233 transitions, 2435 flow [2024-06-27 18:25:37,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 233 transitions, 2318 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:37,257 INFO L231 Difference]: Finished difference. Result has 140 places, 189 transitions, 1747 flow [2024-06-27 18:25:37,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1747, PETRI_PLACES=140, PETRI_TRANSITIONS=189} [2024-06-27 18:25:37,257 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-27 18:25:37,258 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 189 transitions, 1747 flow [2024-06-27 18:25:37,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:37,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:37,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:37,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:25:37,258 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:37,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:37,259 INFO L85 PathProgramCache]: Analyzing trace with hash -908407914, now seen corresponding path program 4 times [2024-06-27 18:25:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:37,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346642465] [2024-06-27 18:25:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:37,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:37,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346642465] [2024-06-27 18:25:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346642465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:37,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302330229] [2024-06-27 18:25:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:38,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:25:38,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 189 transitions, 1747 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:38,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:38,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:25:38,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:39,262 INFO L124 PetriNetUnfolderBase]: 5982/9642 cut-off events. [2024-06-27 18:25:39,262 INFO L125 PetriNetUnfolderBase]: For 206290/206320 co-relation queries the response was YES. [2024-06-27 18:25:39,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53365 conditions, 9642 events. 5982/9642 cut-off events. For 206290/206320 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 62492 event pairs, 1896 based on Foata normal form. 16/9358 useless extension candidates. Maximal degree in co-relation 53306. Up to 7831 conditions per place. [2024-06-27 18:25:39,351 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 154 selfloop transitions, 83 changer transitions 0/246 dead transitions. [2024-06-27 18:25:39,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 246 transitions, 2797 flow [2024-06-27 18:25:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:25:39,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 18:25:39,352 INFO L175 Difference]: Start difference. First operand has 140 places, 189 transitions, 1747 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:25:39,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 246 transitions, 2797 flow [2024-06-27 18:25:39,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 246 transitions, 2654 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:39,495 INFO L231 Difference]: Finished difference. Result has 144 places, 201 transitions, 2054 flow [2024-06-27 18:25:39,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2054, PETRI_PLACES=144, PETRI_TRANSITIONS=201} [2024-06-27 18:25:39,496 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 89 predicate places. [2024-06-27 18:25:39,496 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 201 transitions, 2054 flow [2024-06-27 18:25:39,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:39,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:39,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:39,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:25:39,496 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:39,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1800582310, now seen corresponding path program 2 times [2024-06-27 18:25:39,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:39,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942967214] [2024-06-27 18:25:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:39,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942967214] [2024-06-27 18:25:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942967214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:40,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:40,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:40,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913300203] [2024-06-27 18:25:40,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:40,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:40,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:40,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:40,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:40,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 201 transitions, 2054 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:40,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:40,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:40,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:41,861 INFO L124 PetriNetUnfolderBase]: 5791/9322 cut-off events. [2024-06-27 18:25:41,861 INFO L125 PetriNetUnfolderBase]: For 222139/222174 co-relation queries the response was YES. [2024-06-27 18:25:41,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53893 conditions, 9322 events. 5791/9322 cut-off events. For 222139/222174 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 59904 event pairs, 1844 based on Foata normal form. 29/9110 useless extension candidates. Maximal degree in co-relation 53832. Up to 7702 conditions per place. [2024-06-27 18:25:41,942 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 168 selfloop transitions, 73 changer transitions 0/265 dead transitions. [2024-06-27 18:25:41,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 265 transitions, 3214 flow [2024-06-27 18:25:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:41,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 18:25:41,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280612244897959 [2024-06-27 18:25:41,943 INFO L175 Difference]: Start difference. First operand has 144 places, 201 transitions, 2054 flow. Second operand 8 states and 207 transitions. [2024-06-27 18:25:41,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 265 transitions, 3214 flow [2024-06-27 18:25:42,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 265 transitions, 3087 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:42,133 INFO L231 Difference]: Finished difference. Result has 151 places, 221 transitions, 2572 flow [2024-06-27 18:25:42,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2572, PETRI_PLACES=151, PETRI_TRANSITIONS=221} [2024-06-27 18:25:42,133 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-27 18:25:42,133 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 221 transitions, 2572 flow [2024-06-27 18:25:42,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:42,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:42,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:42,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:25:42,134 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:42,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash -908051414, now seen corresponding path program 3 times [2024-06-27 18:25:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284066199] [2024-06-27 18:25:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284066199] [2024-06-27 18:25:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284066199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:43,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:43,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:43,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044651296] [2024-06-27 18:25:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:43,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:43,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:43,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 221 transitions, 2572 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:43,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:43,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:43,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:44,704 INFO L124 PetriNetUnfolderBase]: 5857/9610 cut-off events. [2024-06-27 18:25:44,705 INFO L125 PetriNetUnfolderBase]: For 241569/241611 co-relation queries the response was YES. [2024-06-27 18:25:44,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56690 conditions, 9610 events. 5857/9610 cut-off events. For 241569/241611 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 63956 event pairs, 1923 based on Foata normal form. 35/9339 useless extension candidates. Maximal degree in co-relation 56625. Up to 7757 conditions per place. [2024-06-27 18:25:44,802 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 196 selfloop transitions, 66 changer transitions 0/286 dead transitions. [2024-06-27 18:25:44,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 286 transitions, 3774 flow [2024-06-27 18:25:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:25:44,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:25:44,804 INFO L175 Difference]: Start difference. First operand has 151 places, 221 transitions, 2572 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:25:44,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 286 transitions, 3774 flow [2024-06-27 18:25:45,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 286 transitions, 3508 flow, removed 132 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:45,079 INFO L231 Difference]: Finished difference. Result has 159 places, 233 transitions, 2742 flow [2024-06-27 18:25:45,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2742, PETRI_PLACES=159, PETRI_TRANSITIONS=233} [2024-06-27 18:25:45,081 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 104 predicate places. [2024-06-27 18:25:45,081 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 233 transitions, 2742 flow [2024-06-27 18:25:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:45,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:45,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:45,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:25:45,082 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:45,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash -918535862, now seen corresponding path program 4 times [2024-06-27 18:25:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:45,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532285394] [2024-06-27 18:25:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:45,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:45,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:45,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532285394] [2024-06-27 18:25:45,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532285394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:45,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:45,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641499136] [2024-06-27 18:25:45,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:45,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:45,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:45,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 233 transitions, 2742 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:45,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:45,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:45,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:47,255 INFO L124 PetriNetUnfolderBase]: 5772/9231 cut-off events. [2024-06-27 18:25:47,255 INFO L125 PetriNetUnfolderBase]: For 250916/251113 co-relation queries the response was YES. [2024-06-27 18:25:47,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57338 conditions, 9231 events. 5772/9231 cut-off events. For 250916/251113 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 59023 event pairs, 1743 based on Foata normal form. 48/8998 useless extension candidates. Maximal degree in co-relation 57270. Up to 7673 conditions per place. [2024-06-27 18:25:47,341 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 194 selfloop transitions, 42 changer transitions 0/279 dead transitions. [2024-06-27 18:25:47,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 279 transitions, 3466 flow [2024-06-27 18:25:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:25:47,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:25:47,342 INFO L175 Difference]: Start difference. First operand has 159 places, 233 transitions, 2742 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:25:47,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 279 transitions, 3466 flow [2024-06-27 18:25:47,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 279 transitions, 3314 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:47,583 INFO L231 Difference]: Finished difference. Result has 162 places, 236 transitions, 2782 flow [2024-06-27 18:25:47,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2782, PETRI_PLACES=162, PETRI_TRANSITIONS=236} [2024-06-27 18:25:47,584 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 107 predicate places. [2024-06-27 18:25:47,584 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 236 transitions, 2782 flow [2024-06-27 18:25:47,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:47,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:47,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:47,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:25:47,585 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:47,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash -918535614, now seen corresponding path program 5 times [2024-06-27 18:25:47,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:47,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756857403] [2024-06-27 18:25:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756857403] [2024-06-27 18:25:48,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756857403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:48,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:48,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:48,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913820597] [2024-06-27 18:25:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:48,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:48,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:48,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:25:48,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 236 transitions, 2782 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:48,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:48,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:25:48,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:49,854 INFO L124 PetriNetUnfolderBase]: 6181/9882 cut-off events. [2024-06-27 18:25:49,854 INFO L125 PetriNetUnfolderBase]: For 275403/275436 co-relation queries the response was YES. [2024-06-27 18:25:49,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61607 conditions, 9882 events. 6181/9882 cut-off events. For 275403/275436 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 63532 event pairs, 1912 based on Foata normal form. 17/9614 useless extension candidates. Maximal degree in co-relation 61537. Up to 8087 conditions per place. [2024-06-27 18:25:49,966 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 204 selfloop transitions, 73 changer transitions 0/286 dead transitions. [2024-06-27 18:25:49,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 286 transitions, 3873 flow [2024-06-27 18:25:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:25:49,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 18:25:49,968 INFO L175 Difference]: Start difference. First operand has 162 places, 236 transitions, 2782 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:25:49,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 286 transitions, 3873 flow [2024-06-27 18:25:50,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 286 transitions, 3705 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:50,285 INFO L231 Difference]: Finished difference. Result has 164 places, 240 transitions, 2861 flow [2024-06-27 18:25:50,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2861, PETRI_PLACES=164, PETRI_TRANSITIONS=240} [2024-06-27 18:25:50,286 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2024-06-27 18:25:50,286 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 240 transitions, 2861 flow [2024-06-27 18:25:50,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:50,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:50,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:50,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:25:50,287 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:50,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash -918526934, now seen corresponding path program 4 times [2024-06-27 18:25:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161351213] [2024-06-27 18:25:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:50,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:51,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161351213] [2024-06-27 18:25:51,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161351213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:51,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:51,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44160208] [2024-06-27 18:25:51,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:51,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:51,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:51,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:51,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 240 transitions, 2861 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:51,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:51,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:51,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:52,536 INFO L124 PetriNetUnfolderBase]: 5961/9571 cut-off events. [2024-06-27 18:25:52,536 INFO L125 PetriNetUnfolderBase]: For 275710/275746 co-relation queries the response was YES. [2024-06-27 18:25:52,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60078 conditions, 9571 events. 5961/9571 cut-off events. For 275710/275746 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 61632 event pairs, 1845 based on Foata normal form. 29/9356 useless extension candidates. Maximal degree in co-relation 60007. Up to 7907 conditions per place. [2024-06-27 18:25:52,641 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 197 selfloop transitions, 76 changer transitions 0/298 dead transitions. [2024-06-27 18:25:52,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 298 transitions, 4008 flow [2024-06-27 18:25:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:25:52,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:25:52,642 INFO L175 Difference]: Start difference. First operand has 164 places, 240 transitions, 2861 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:25:52,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 298 transitions, 4008 flow [2024-06-27 18:25:52,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 298 transitions, 3703 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:52,976 INFO L231 Difference]: Finished difference. Result has 167 places, 252 transitions, 2979 flow [2024-06-27 18:25:52,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2979, PETRI_PLACES=167, PETRI_TRANSITIONS=252} [2024-06-27 18:25:52,977 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2024-06-27 18:25:52,977 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 252 transitions, 2979 flow [2024-06-27 18:25:52,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:52,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:52,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:52,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:25:52,978 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:52,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash -918527244, now seen corresponding path program 6 times [2024-06-27 18:25:52,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:52,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352102216] [2024-06-27 18:25:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:52,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:53,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:53,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352102216] [2024-06-27 18:25:53,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352102216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:53,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:53,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991216161] [2024-06-27 18:25:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:53,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:25:53,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 252 transitions, 2979 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:53,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:53,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:25:53,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:55,206 INFO L124 PetriNetUnfolderBase]: 6204/9915 cut-off events. [2024-06-27 18:25:55,207 INFO L125 PetriNetUnfolderBase]: For 290058/290091 co-relation queries the response was YES. [2024-06-27 18:25:55,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62418 conditions, 9915 events. 6204/9915 cut-off events. For 290058/290091 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 63801 event pairs, 1919 based on Foata normal form. 17/9647 useless extension candidates. Maximal degree in co-relation 62346. Up to 8124 conditions per place. [2024-06-27 18:25:55,298 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 213 selfloop transitions, 74 changer transitions 0/296 dead transitions. [2024-06-27 18:25:55,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 296 transitions, 3895 flow [2024-06-27 18:25:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:25:55,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 18:25:55,299 INFO L175 Difference]: Start difference. First operand has 167 places, 252 transitions, 2979 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:25:55,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 296 transitions, 3895 flow [2024-06-27 18:25:55,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 296 transitions, 3657 flow, removed 82 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:55,599 INFO L231 Difference]: Finished difference. Result has 172 places, 252 transitions, 2898 flow [2024-06-27 18:25:55,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2898, PETRI_PLACES=172, PETRI_TRANSITIONS=252} [2024-06-27 18:25:55,599 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-27 18:25:55,599 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 252 transitions, 2898 flow [2024-06-27 18:25:55,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:25:55,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:55,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:55,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:25:55,600 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:55,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:55,601 INFO L85 PathProgramCache]: Analyzing trace with hash 929799436, now seen corresponding path program 1 times [2024-06-27 18:25:55,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:55,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258095498] [2024-06-27 18:25:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:55,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:56,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258095498] [2024-06-27 18:25:56,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258095498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:56,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:56,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:56,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696783532] [2024-06-27 18:25:56,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:56,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:56,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:56,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:56,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:56,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:25:56,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 252 transitions, 2898 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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) [2024-06-27 18:25:56,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:56,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:25:56,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:57,455 INFO L124 PetriNetUnfolderBase]: 5237/8348 cut-off events. [2024-06-27 18:25:57,456 INFO L125 PetriNetUnfolderBase]: For 245330/245348 co-relation queries the response was YES. [2024-06-27 18:25:57,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53781 conditions, 8348 events. 5237/8348 cut-off events. For 245330/245348 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 53390 event pairs, 1723 based on Foata normal form. 20/8240 useless extension candidates. Maximal degree in co-relation 53708. Up to 7271 conditions per place. [2024-06-27 18:25:57,551 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 232 selfloop transitions, 17 changer transitions 0/275 dead transitions. [2024-06-27 18:25:57,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 275 transitions, 3486 flow [2024-06-27 18:25:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 18:25:57,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:25:57,553 INFO L175 Difference]: Start difference. First operand has 172 places, 252 transitions, 2898 flow. Second operand 6 states and 147 transitions. [2024-06-27 18:25:57,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 275 transitions, 3486 flow [2024-06-27 18:25:57,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 275 transitions, 3294 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:57,762 INFO L231 Difference]: Finished difference. Result has 172 places, 255 transitions, 2785 flow [2024-06-27 18:25:57,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2785, PETRI_PLACES=172, PETRI_TRANSITIONS=255} [2024-06-27 18:25:57,762 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-27 18:25:57,763 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 255 transitions, 2785 flow [2024-06-27 18:25:57,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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) [2024-06-27 18:25:57,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:57,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:57,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:25:57,763 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:57,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1364968340, now seen corresponding path program 1 times [2024-06-27 18:25:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367192180] [2024-06-27 18:25:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:58,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:58,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367192180] [2024-06-27 18:25:58,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367192180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:58,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:58,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:58,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455561231] [2024-06-27 18:25:58,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:58,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:58,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:25:58,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 255 transitions, 2785 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:58,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:58,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:25:58,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:00,198 INFO L124 PetriNetUnfolderBase]: 5776/8977 cut-off events. [2024-06-27 18:26:00,198 INFO L125 PetriNetUnfolderBase]: For 286511/286595 co-relation queries the response was YES. [2024-06-27 18:26:00,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59107 conditions, 8977 events. 5776/8977 cut-off events. For 286511/286595 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 56024 event pairs, 1817 based on Foata normal form. 34/8852 useless extension candidates. Maximal degree in co-relation 59033. Up to 7879 conditions per place. [2024-06-27 18:26:00,291 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 243 selfloop transitions, 25 changer transitions 0/315 dead transitions. [2024-06-27 18:26:00,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 315 transitions, 3591 flow [2024-06-27 18:26:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 18:26:00,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147392290249433 [2024-06-27 18:26:00,294 INFO L175 Difference]: Start difference. First operand has 172 places, 255 transitions, 2785 flow. Second operand 9 states and 227 transitions. [2024-06-27 18:26:00,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 315 transitions, 3591 flow [2024-06-27 18:26:00,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 315 transitions, 3538 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:00,551 INFO L231 Difference]: Finished difference. Result has 178 places, 262 transitions, 2937 flow [2024-06-27 18:26:00,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2732, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2937, PETRI_PLACES=178, PETRI_TRANSITIONS=262} [2024-06-27 18:26:00,552 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 123 predicate places. [2024-06-27 18:26:00,552 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 262 transitions, 2937 flow [2024-06-27 18:26:00,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:00,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:00,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:00,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:26:00,553 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:00,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:00,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1198740357, now seen corresponding path program 1 times [2024-06-27 18:26:00,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:00,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748412421] [2024-06-27 18:26:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:00,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:01,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748412421] [2024-06-27 18:26:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748412421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:01,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:01,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:01,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328892968] [2024-06-27 18:26:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:01,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:01,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:01,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:01,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:01,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 262 transitions, 2937 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:01,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:01,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:01,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:03,069 INFO L124 PetriNetUnfolderBase]: 6359/9658 cut-off events. [2024-06-27 18:26:03,070 INFO L125 PetriNetUnfolderBase]: For 321331/321331 co-relation queries the response was YES. [2024-06-27 18:26:03,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64954 conditions, 9658 events. 6359/9658 cut-off events. For 321331/321331 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 58908 event pairs, 1953 based on Foata normal form. 6/9515 useless extension candidates. Maximal degree in co-relation 64878. Up to 8741 conditions per place. [2024-06-27 18:26:03,166 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 283 selfloop transitions, 40 changer transitions 0/332 dead transitions. [2024-06-27 18:26:03,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 332 transitions, 4263 flow [2024-06-27 18:26:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:26:03,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-27 18:26:03,168 INFO L175 Difference]: Start difference. First operand has 178 places, 262 transitions, 2937 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:26:03,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 332 transitions, 4263 flow [2024-06-27 18:26:03,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 332 transitions, 4096 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:03,432 INFO L231 Difference]: Finished difference. Result has 183 places, 274 transitions, 3130 flow [2024-06-27 18:26:03,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3130, PETRI_PLACES=183, PETRI_TRANSITIONS=274} [2024-06-27 18:26:03,437 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 128 predicate places. [2024-06-27 18:26:03,437 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 274 transitions, 3130 flow [2024-06-27 18:26:03,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:03,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:03,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:03,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:26:03,438 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:03,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1198949607, now seen corresponding path program 2 times [2024-06-27 18:26:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:03,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070937695] [2024-06-27 18:26:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:03,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:04,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070937695] [2024-06-27 18:26:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070937695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:04,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469653725] [2024-06-27 18:26:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:04,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:04,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 274 transitions, 3130 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:04,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:04,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:04,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:05,917 INFO L124 PetriNetUnfolderBase]: 6619/10070 cut-off events. [2024-06-27 18:26:05,917 INFO L125 PetriNetUnfolderBase]: For 361441/361441 co-relation queries the response was YES. [2024-06-27 18:26:05,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69903 conditions, 10070 events. 6619/10070 cut-off events. For 361441/361441 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 61981 event pairs, 1957 based on Foata normal form. 6/9918 useless extension candidates. Maximal degree in co-relation 69824. Up to 8760 conditions per place. [2024-06-27 18:26:06,042 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 276 selfloop transitions, 60 changer transitions 0/345 dead transitions. [2024-06-27 18:26:06,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 345 transitions, 4634 flow [2024-06-27 18:26:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:26:06,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528344671201814 [2024-06-27 18:26:06,048 INFO L175 Difference]: Start difference. First operand has 183 places, 274 transitions, 3130 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:26:06,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 345 transitions, 4634 flow [2024-06-27 18:26:06,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 345 transitions, 4468 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:06,651 INFO L231 Difference]: Finished difference. Result has 189 places, 286 transitions, 3411 flow [2024-06-27 18:26:06,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3411, PETRI_PLACES=189, PETRI_TRANSITIONS=286} [2024-06-27 18:26:06,652 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 134 predicate places. [2024-06-27 18:26:06,653 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 286 transitions, 3411 flow [2024-06-27 18:26:06,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:06,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:06,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:06,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:26:06,653 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:06,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1868571330, now seen corresponding path program 1 times [2024-06-27 18:26:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:06,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604747312] [2024-06-27 18:26:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:07,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:07,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604747312] [2024-06-27 18:26:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604747312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:07,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725025333] [2024-06-27 18:26:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:07,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:07,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:07,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:07,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 286 transitions, 3411 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:07,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:07,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:07,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:09,464 INFO L124 PetriNetUnfolderBase]: 6661/10127 cut-off events. [2024-06-27 18:26:09,464 INFO L125 PetriNetUnfolderBase]: For 380993/380993 co-relation queries the response was YES. [2024-06-27 18:26:09,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72130 conditions, 10127 events. 6661/10127 cut-off events. For 380993/380993 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 62243 event pairs, 1978 based on Foata normal form. 3/9971 useless extension candidates. Maximal degree in co-relation 72048. Up to 9258 conditions per place. [2024-06-27 18:26:09,590 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 298 selfloop transitions, 37 changer transitions 0/344 dead transitions. [2024-06-27 18:26:09,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 344 transitions, 4585 flow [2024-06-27 18:26:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:26:09,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:26:09,599 INFO L175 Difference]: Start difference. First operand has 189 places, 286 transitions, 3411 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:26:09,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 344 transitions, 4585 flow [2024-06-27 18:26:10,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 344 transitions, 4416 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:10,092 INFO L231 Difference]: Finished difference. Result has 194 places, 290 transitions, 3441 flow [2024-06-27 18:26:10,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3441, PETRI_PLACES=194, PETRI_TRANSITIONS=290} [2024-06-27 18:26:10,093 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2024-06-27 18:26:10,093 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 290 transitions, 3441 flow [2024-06-27 18:26:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:10,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:10,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:10,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:26:10,094 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:10,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1868563611, now seen corresponding path program 3 times [2024-06-27 18:26:10,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:10,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530880294] [2024-06-27 18:26:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:10,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:10,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:10,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530880294] [2024-06-27 18:26:10,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530880294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:10,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:10,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789833715] [2024-06-27 18:26:10,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:10,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:10,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:10,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:11,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:11,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 290 transitions, 3441 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:11,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:11,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:11,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:12,899 INFO L124 PetriNetUnfolderBase]: 6649/10117 cut-off events. [2024-06-27 18:26:12,899 INFO L125 PetriNetUnfolderBase]: For 379418/379418 co-relation queries the response was YES. [2024-06-27 18:26:12,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71252 conditions, 10117 events. 6649/10117 cut-off events. For 379418/379418 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 62221 event pairs, 1935 based on Foata normal form. 6/9964 useless extension candidates. Maximal degree in co-relation 71168. Up to 8812 conditions per place. [2024-06-27 18:26:13,030 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 284 selfloop transitions, 55 changer transitions 0/348 dead transitions. [2024-06-27 18:26:13,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 348 transitions, 4615 flow [2024-06-27 18:26:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:26:13,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260770975056689 [2024-06-27 18:26:13,031 INFO L175 Difference]: Start difference. First operand has 194 places, 290 transitions, 3441 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:26:13,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 348 transitions, 4615 flow [2024-06-27 18:26:13,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 348 transitions, 4384 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:13,605 INFO L231 Difference]: Finished difference. Result has 196 places, 290 transitions, 3330 flow [2024-06-27 18:26:13,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3210, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3330, PETRI_PLACES=196, PETRI_TRANSITIONS=290} [2024-06-27 18:26:13,605 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 141 predicate places. [2024-06-27 18:26:13,606 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 290 transitions, 3330 flow [2024-06-27 18:26:13,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:13,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:13,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:13,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:26:13,606 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:13,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash -545613269, now seen corresponding path program 4 times [2024-06-27 18:26:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564378771] [2024-06-27 18:26:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:13,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:14,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564378771] [2024-06-27 18:26:14,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564378771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:14,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:14,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:14,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897175079] [2024-06-27 18:26:14,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:14,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:14,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:14,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:14,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:14,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 290 transitions, 3330 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:14,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:14,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:16,205 INFO L124 PetriNetUnfolderBase]: 6869/10475 cut-off events. [2024-06-27 18:26:16,206 INFO L125 PetriNetUnfolderBase]: For 406781/406781 co-relation queries the response was YES. [2024-06-27 18:26:16,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74230 conditions, 10475 events. 6869/10475 cut-off events. For 406781/406781 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 65014 event pairs, 1963 based on Foata normal form. 6/10309 useless extension candidates. Maximal degree in co-relation 74145. Up to 8661 conditions per place. [2024-06-27 18:26:16,321 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 274 selfloop transitions, 74 changer transitions 0/357 dead transitions. [2024-06-27 18:26:16,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 357 transitions, 4870 flow [2024-06-27 18:26:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:26:16,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:26:16,323 INFO L175 Difference]: Start difference. First operand has 196 places, 290 transitions, 3330 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:26:16,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 357 transitions, 4870 flow [2024-06-27 18:26:16,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 357 transitions, 4694 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:26:16,709 INFO L231 Difference]: Finished difference. Result has 197 places, 298 transitions, 3521 flow [2024-06-27 18:26:16,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3521, PETRI_PLACES=197, PETRI_TRANSITIONS=298} [2024-06-27 18:26:16,710 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 142 predicate places. [2024-06-27 18:26:16,710 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 298 transitions, 3521 flow [2024-06-27 18:26:16,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:16,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:16,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:16,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:26:16,710 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:16,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1372333227, now seen corresponding path program 5 times [2024-06-27 18:26:16,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:16,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109044132] [2024-06-27 18:26:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:16,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:17,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109044132] [2024-06-27 18:26:17,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109044132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:17,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:17,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333874546] [2024-06-27 18:26:17,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:17,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:17,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:17,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:17,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:17,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:17,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 298 transitions, 3521 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:17,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:17,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:17,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:19,280 INFO L124 PetriNetUnfolderBase]: 6953/10586 cut-off events. [2024-06-27 18:26:19,281 INFO L125 PetriNetUnfolderBase]: For 439984/439984 co-relation queries the response was YES. [2024-06-27 18:26:19,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77005 conditions, 10586 events. 6953/10586 cut-off events. For 439984/439984 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 65632 event pairs, 1959 based on Foata normal form. 6/10427 useless extension candidates. Maximal degree in co-relation 76920. Up to 8723 conditions per place. [2024-06-27 18:26:19,434 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 274 selfloop transitions, 78 changer transitions 0/361 dead transitions. [2024-06-27 18:26:19,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 361 transitions, 4940 flow [2024-06-27 18:26:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:26:19,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328798185941043 [2024-06-27 18:26:19,435 INFO L175 Difference]: Start difference. First operand has 197 places, 298 transitions, 3521 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:26:19,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 361 transitions, 4940 flow [2024-06-27 18:26:19,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 361 transitions, 4754 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:19,969 INFO L231 Difference]: Finished difference. Result has 201 places, 302 transitions, 3623 flow [2024-06-27 18:26:19,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3623, PETRI_PLACES=201, PETRI_TRANSITIONS=302} [2024-06-27 18:26:19,970 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 146 predicate places. [2024-06-27 18:26:19,970 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 302 transitions, 3623 flow [2024-06-27 18:26:19,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:19,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:19,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:19,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:26:19,970 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:19,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash 309701104, now seen corresponding path program 2 times [2024-06-27 18:26:19,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:19,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82544493] [2024-06-27 18:26:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:19,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:20,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82544493] [2024-06-27 18:26:20,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82544493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:20,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:20,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:20,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984524683] [2024-06-27 18:26:20,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:20,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:20,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:20,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:20,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 302 transitions, 3623 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:20,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:20,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:20,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:22,754 INFO L124 PetriNetUnfolderBase]: 6995/10637 cut-off events. [2024-06-27 18:26:22,754 INFO L125 PetriNetUnfolderBase]: For 453621/453621 co-relation queries the response was YES. [2024-06-27 18:26:22,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78233 conditions, 10637 events. 6995/10637 cut-off events. For 453621/453621 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 65741 event pairs, 2008 based on Foata normal form. 3/10472 useless extension candidates. Maximal degree in co-relation 78146. Up to 9526 conditions per place. [2024-06-27 18:26:22,899 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 298 selfloop transitions, 52 changer transitions 0/359 dead transitions. [2024-06-27 18:26:22,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 359 transitions, 4877 flow [2024-06-27 18:26:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:26:22,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-27 18:26:22,901 INFO L175 Difference]: Start difference. First operand has 201 places, 302 transitions, 3623 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:26:22,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 359 transitions, 4877 flow [2024-06-27 18:26:23,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 359 transitions, 4640 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:23,523 INFO L231 Difference]: Finished difference. Result has 204 places, 306 transitions, 3627 flow [2024-06-27 18:26:23,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3627, PETRI_PLACES=204, PETRI_TRANSITIONS=306} [2024-06-27 18:26:23,524 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 149 predicate places. [2024-06-27 18:26:23,524 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 306 transitions, 3627 flow [2024-06-27 18:26:23,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:23,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:23,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:23,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:26:23,524 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:23,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1372592697, now seen corresponding path program 6 times [2024-06-27 18:26:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:23,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622491374] [2024-06-27 18:26:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:24,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622491374] [2024-06-27 18:26:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622491374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:24,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:24,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:24,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292855125] [2024-06-27 18:26:24,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:24,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:24,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:24,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:24,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:24,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 306 transitions, 3627 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:24,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:24,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:24,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:26,242 INFO L124 PetriNetUnfolderBase]: 7023/10670 cut-off events. [2024-06-27 18:26:26,242 INFO L125 PetriNetUnfolderBase]: For 464926/464926 co-relation queries the response was YES. [2024-06-27 18:26:26,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78612 conditions, 10670 events. 7023/10670 cut-off events. For 464926/464926 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 66060 event pairs, 1899 based on Foata normal form. 6/10516 useless extension candidates. Maximal degree in co-relation 78524. Up to 8810 conditions per place. [2024-06-27 18:26:26,366 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 262 selfloop transitions, 94 changer transitions 0/365 dead transitions. [2024-06-27 18:26:26,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 365 transitions, 4841 flow [2024-06-27 18:26:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 18:26:26,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 18:26:26,367 INFO L175 Difference]: Start difference. First operand has 204 places, 306 transitions, 3627 flow. Second operand 9 states and 231 transitions. [2024-06-27 18:26:26,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 365 transitions, 4841 flow [2024-06-27 18:26:26,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 365 transitions, 4630 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:26,786 INFO L231 Difference]: Finished difference. Result has 206 places, 310 transitions, 3743 flow [2024-06-27 18:26:26,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3743, PETRI_PLACES=206, PETRI_TRANSITIONS=310} [2024-06-27 18:26:26,787 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 151 predicate places. [2024-06-27 18:26:26,788 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 310 transitions, 3743 flow [2024-06-27 18:26:26,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:26,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:26,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:26,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:26:26,788 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:26,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1372592976, now seen corresponding path program 3 times [2024-06-27 18:26:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:26,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618133775] [2024-06-27 18:26:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:27,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:27,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618133775] [2024-06-27 18:26:27,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618133775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:27,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:27,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:27,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667776775] [2024-06-27 18:26:27,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:27,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:27,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:27,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:27,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 310 transitions, 3743 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:27,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:27,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:27,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:29,602 INFO L124 PetriNetUnfolderBase]: 7065/10744 cut-off events. [2024-06-27 18:26:29,602 INFO L125 PetriNetUnfolderBase]: For 480310/480310 co-relation queries the response was YES. [2024-06-27 18:26:29,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80047 conditions, 10744 events. 7065/10744 cut-off events. For 480310/480310 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 66564 event pairs, 2001 based on Foata normal form. 3/10578 useless extension candidates. Maximal degree in co-relation 79958. Up to 9622 conditions per place. [2024-06-27 18:26:29,738 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 300 selfloop transitions, 57 changer transitions 0/366 dead transitions. [2024-06-27 18:26:29,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 366 transitions, 4947 flow [2024-06-27 18:26:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:26:29,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:26:29,740 INFO L175 Difference]: Start difference. First operand has 206 places, 310 transitions, 3743 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:26:29,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 366 transitions, 4947 flow [2024-06-27 18:26:30,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 366 transitions, 4698 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:30,495 INFO L231 Difference]: Finished difference. Result has 209 places, 314 transitions, 3755 flow [2024-06-27 18:26:30,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3494, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3755, PETRI_PLACES=209, PETRI_TRANSITIONS=314} [2024-06-27 18:26:30,496 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 154 predicate places. [2024-06-27 18:26:30,496 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 314 transitions, 3755 flow [2024-06-27 18:26:30,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:30,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:30,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:30,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:26:30,497 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:30,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash -545336439, now seen corresponding path program 1 times [2024-06-27 18:26:30,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:30,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98633564] [2024-06-27 18:26:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:30,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:31,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98633564] [2024-06-27 18:26:31,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98633564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:31,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:31,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799331015] [2024-06-27 18:26:31,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:31,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:31,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:31,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:31,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:26:31,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 314 transitions, 3755 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:31,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:31,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:26:31,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:33,400 INFO L124 PetriNetUnfolderBase]: 6849/10509 cut-off events. [2024-06-27 18:26:33,400 INFO L125 PetriNetUnfolderBase]: For 505068/505090 co-relation queries the response was YES. [2024-06-27 18:26:33,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78591 conditions, 10509 events. 6849/10509 cut-off events. For 505068/505090 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 66098 event pairs, 2017 based on Foata normal form. 28/10379 useless extension candidates. Maximal degree in co-relation 78501. Up to 9311 conditions per place. [2024-06-27 18:26:33,523 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 309 selfloop transitions, 33 changer transitions 0/370 dead transitions. [2024-06-27 18:26:33,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 370 transitions, 4921 flow [2024-06-27 18:26:33,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:26:33,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-27 18:26:33,525 INFO L175 Difference]: Start difference. First operand has 209 places, 314 transitions, 3755 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:26:33,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 370 transitions, 4921 flow [2024-06-27 18:26:34,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 370 transitions, 4674 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:34,032 INFO L231 Difference]: Finished difference. Result has 211 places, 317 transitions, 3704 flow [2024-06-27 18:26:34,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3704, PETRI_PLACES=211, PETRI_TRANSITIONS=317} [2024-06-27 18:26:34,033 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 156 predicate places. [2024-06-27 18:26:34,033 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 317 transitions, 3704 flow [2024-06-27 18:26:34,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:34,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:34,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:34,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:26:34,033 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:34,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:34,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1372602276, now seen corresponding path program 4 times [2024-06-27 18:26:34,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:34,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251541672] [2024-06-27 18:26:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:34,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:34,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251541672] [2024-06-27 18:26:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251541672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:34,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:34,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:34,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265455732] [2024-06-27 18:26:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:34,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:34,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:34,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:34,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 317 transitions, 3704 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:34,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:34,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:34,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:36,874 INFO L124 PetriNetUnfolderBase]: 7220/10966 cut-off events. [2024-06-27 18:26:36,874 INFO L125 PetriNetUnfolderBase]: For 528195/528195 co-relation queries the response was YES. [2024-06-27 18:26:36,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82939 conditions, 10966 events. 7220/10966 cut-off events. For 528195/528195 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 68024 event pairs, 1970 based on Foata normal form. 3/10800 useless extension candidates. Maximal degree in co-relation 82848. Up to 9641 conditions per place. [2024-06-27 18:26:37,028 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 286 selfloop transitions, 98 changer transitions 0/393 dead transitions. [2024-06-27 18:26:37,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 393 transitions, 5570 flow [2024-06-27 18:26:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:26:37,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-27 18:26:37,030 INFO L175 Difference]: Start difference. First operand has 211 places, 317 transitions, 3704 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:26:37,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 393 transitions, 5570 flow [2024-06-27 18:26:37,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 393 transitions, 5398 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:37,948 INFO L231 Difference]: Finished difference. Result has 216 places, 338 transitions, 4514 flow [2024-06-27 18:26:37,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3532, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4514, PETRI_PLACES=216, PETRI_TRANSITIONS=338} [2024-06-27 18:26:37,949 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 161 predicate places. [2024-06-27 18:26:37,949 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 338 transitions, 4514 flow [2024-06-27 18:26:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:37,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:37,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:37,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:26:37,950 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:37,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:37,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2056964854, now seen corresponding path program 1 times [2024-06-27 18:26:37,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:37,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49983102] [2024-06-27 18:26:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:37,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:38,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:38,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49983102] [2024-06-27 18:26:38,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49983102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:38,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:38,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:38,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465234676] [2024-06-27 18:26:38,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:38,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:38,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:38,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:38,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:38,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:26:38,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 338 transitions, 4514 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:38,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:38,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:26:38,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:40,442 INFO L124 PetriNetUnfolderBase]: 6947/10673 cut-off events. [2024-06-27 18:26:40,443 INFO L125 PetriNetUnfolderBase]: For 552599/552629 co-relation queries the response was YES. [2024-06-27 18:26:40,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82953 conditions, 10673 events. 6947/10673 cut-off events. For 552599/552629 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 67455 event pairs, 2048 based on Foata normal form. 31/10539 useless extension candidates. Maximal degree in co-relation 82858. Up to 9564 conditions per place. [2024-06-27 18:26:40,578 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 307 selfloop transitions, 30 changer transitions 0/370 dead transitions. [2024-06-27 18:26:40,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 370 transitions, 5472 flow [2024-06-27 18:26:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:26:40,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:26:40,579 INFO L175 Difference]: Start difference. First operand has 216 places, 338 transitions, 4514 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:26:40,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 370 transitions, 5472 flow [2024-06-27 18:26:41,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 370 transitions, 5030 flow, removed 184 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:41,321 INFO L231 Difference]: Finished difference. Result has 216 places, 344 transitions, 4267 flow [2024-06-27 18:26:41,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4078, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4267, PETRI_PLACES=216, PETRI_TRANSITIONS=344} [2024-06-27 18:26:41,322 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 161 predicate places. [2024-06-27 18:26:41,322 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 344 transitions, 4267 flow [2024-06-27 18:26:41,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:41,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:41,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:41,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:26:41,323 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:41,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:41,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1915177828, now seen corresponding path program 5 times [2024-06-27 18:26:41,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:41,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356200151] [2024-06-27 18:26:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:41,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:42,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:42,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356200151] [2024-06-27 18:26:42,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356200151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:42,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:42,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:42,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196421866] [2024-06-27 18:26:42,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:42,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:42,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:42,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:42,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 344 transitions, 4267 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:42,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:42,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:42,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:44,241 INFO L124 PetriNetUnfolderBase]: 7309/11259 cut-off events. [2024-06-27 18:26:44,242 INFO L125 PetriNetUnfolderBase]: For 569066/569096 co-relation queries the response was YES. [2024-06-27 18:26:44,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86375 conditions, 11259 events. 7309/11259 cut-off events. For 569066/569096 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 69934 event pairs, 1710 based on Foata normal form. 15/11066 useless extension candidates. Maximal degree in co-relation 86282. Up to 9049 conditions per place. [2024-06-27 18:26:44,393 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 220 selfloop transitions, 190 changer transitions 0/419 dead transitions. [2024-06-27 18:26:44,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 419 transitions, 6431 flow [2024-06-27 18:26:44,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 18:26:44,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 18:26:44,404 INFO L175 Difference]: Start difference. First operand has 216 places, 344 transitions, 4267 flow. Second operand 9 states and 231 transitions. [2024-06-27 18:26:44,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 419 transitions, 6431 flow [2024-06-27 18:26:45,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 419 transitions, 6332 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:45,340 INFO L231 Difference]: Finished difference. Result has 223 places, 365 transitions, 5431 flow [2024-06-27 18:26:45,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5431, PETRI_PLACES=223, PETRI_TRANSITIONS=365} [2024-06-27 18:26:45,341 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 168 predicate places. [2024-06-27 18:26:45,341 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 365 transitions, 5431 flow [2024-06-27 18:26:45,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:45,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:45,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:45,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:26:45,342 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:45,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash 16514249, now seen corresponding path program 7 times [2024-06-27 18:26:45,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:45,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503944923] [2024-06-27 18:26:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:45,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:46,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:46,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503944923] [2024-06-27 18:26:46,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503944923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:46,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:46,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680671460] [2024-06-27 18:26:46,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:46,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:46,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:46,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:46,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:46,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:46,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 365 transitions, 5431 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:46,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:46,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:46,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:48,273 INFO L124 PetriNetUnfolderBase]: 7516/11852 cut-off events. [2024-06-27 18:26:48,273 INFO L125 PetriNetUnfolderBase]: For 639108/639138 co-relation queries the response was YES. [2024-06-27 18:26:48,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94089 conditions, 11852 events. 7516/11852 cut-off events. For 639108/639138 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 77259 event pairs, 1791 based on Foata normal form. 18/11561 useless extension candidates. Maximal degree in co-relation 93994. Up to 8843 conditions per place. [2024-06-27 18:26:48,437 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 285 selfloop transitions, 139 changer transitions 0/433 dead transitions. [2024-06-27 18:26:48,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 433 transitions, 7273 flow [2024-06-27 18:26:48,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:26:48,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:26:48,438 INFO L175 Difference]: Start difference. First operand has 223 places, 365 transitions, 5431 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:26:48,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 433 transitions, 7273 flow [2024-06-27 18:26:49,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 433 transitions, 6800 flow, removed 222 selfloop flow, removed 2 redundant places. [2024-06-27 18:26:49,893 INFO L231 Difference]: Finished difference. Result has 231 places, 377 transitions, 5726 flow [2024-06-27 18:26:49,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4996, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5726, PETRI_PLACES=231, PETRI_TRANSITIONS=377} [2024-06-27 18:26:49,893 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 176 predicate places. [2024-06-27 18:26:49,894 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 377 transitions, 5726 flow [2024-06-27 18:26:49,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:49,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:49,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:49,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:26:49,894 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:49,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:49,895 INFO L85 PathProgramCache]: Analyzing trace with hash -277310492, now seen corresponding path program 6 times [2024-06-27 18:26:49,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:49,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980070424] [2024-06-27 18:26:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:49,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980070424] [2024-06-27 18:26:50,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980070424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:50,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:50,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980514729] [2024-06-27 18:26:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:50,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:50,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:50,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:50,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 377 transitions, 5726 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:50,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:50,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:50,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:53,071 INFO L124 PetriNetUnfolderBase]: 7558/11936 cut-off events. [2024-06-27 18:26:53,071 INFO L125 PetriNetUnfolderBase]: For 622450/622480 co-relation queries the response was YES. [2024-06-27 18:26:53,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94019 conditions, 11936 events. 7558/11936 cut-off events. For 622450/622480 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 77824 event pairs, 1919 based on Foata normal form. 15/11633 useless extension candidates. Maximal degree in co-relation 93921. Up to 9951 conditions per place. [2024-06-27 18:26:53,229 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 330 selfloop transitions, 93 changer transitions 0/432 dead transitions. [2024-06-27 18:26:53,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 432 transitions, 7116 flow [2024-06-27 18:26:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:53,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:26:53,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-27 18:26:53,231 INFO L175 Difference]: Start difference. First operand has 231 places, 377 transitions, 5726 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:26:53,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 432 transitions, 7116 flow [2024-06-27 18:26:54,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 432 transitions, 6953 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:54,350 INFO L231 Difference]: Finished difference. Result has 236 places, 381 transitions, 5912 flow [2024-06-27 18:26:54,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5563, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5912, PETRI_PLACES=236, PETRI_TRANSITIONS=381} [2024-06-27 18:26:54,351 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-27 18:26:54,351 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 381 transitions, 5912 flow [2024-06-27 18:26:54,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:54,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:54,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:26:54,353 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:54,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1599702639, now seen corresponding path program 2 times [2024-06-27 18:26:54,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:54,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120560989] [2024-06-27 18:26:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:54,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:55,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:55,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120560989] [2024-06-27 18:26:55,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120560989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:55,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:55,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:55,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335752376] [2024-06-27 18:26:55,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:55,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:55,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:55,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:55,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:55,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:26:55,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 381 transitions, 5912 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:55,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:55,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:26:55,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:57,516 INFO L124 PetriNetUnfolderBase]: 7369/11160 cut-off events. [2024-06-27 18:26:57,516 INFO L125 PetriNetUnfolderBase]: For 637953/637987 co-relation queries the response was YES. [2024-06-27 18:26:57,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92736 conditions, 11160 events. 7369/11160 cut-off events. For 637953/637987 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 69357 event pairs, 1739 based on Foata normal form. 30/11060 useless extension candidates. Maximal degree in co-relation 92636. Up to 9277 conditions per place. [2024-06-27 18:26:57,670 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 277 selfloop transitions, 131 changer transitions 0/446 dead transitions. [2024-06-27 18:26:57,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 446 transitions, 7641 flow [2024-06-27 18:26:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 18:26:57,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-27 18:26:57,673 INFO L175 Difference]: Start difference. First operand has 236 places, 381 transitions, 5912 flow. Second operand 9 states and 236 transitions. [2024-06-27 18:26:57,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 446 transitions, 7641 flow [2024-06-27 18:26:58,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 446 transitions, 7330 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:58,821 INFO L231 Difference]: Finished difference. Result has 239 places, 390 transitions, 6240 flow [2024-06-27 18:26:58,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5601, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6240, PETRI_PLACES=239, PETRI_TRANSITIONS=390} [2024-06-27 18:26:58,822 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 184 predicate places. [2024-06-27 18:26:58,822 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 390 transitions, 6240 flow [2024-06-27 18:26:58,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:58,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:58,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:58,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:26:58,823 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:58,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1904135938, now seen corresponding path program 7 times [2024-06-27 18:26:58,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:58,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207047773] [2024-06-27 18:26:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207047773] [2024-06-27 18:26:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207047773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:59,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553503835] [2024-06-27 18:26:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:59,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:59,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:26:59,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 390 transitions, 6240 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:59,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:59,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:26:59,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:02,083 INFO L124 PetriNetUnfolderBase]: 7701/11717 cut-off events. [2024-06-27 18:27:02,084 INFO L125 PetriNetUnfolderBase]: For 666293/666323 co-relation queries the response was YES. [2024-06-27 18:27:02,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97296 conditions, 11717 events. 7701/11717 cut-off events. For 666293/666323 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 73672 event pairs, 1925 based on Foata normal form. 15/11524 useless extension candidates. Maximal degree in co-relation 97194. Up to 10098 conditions per place. [2024-06-27 18:27:02,222 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 343 selfloop transitions, 101 changer transitions 0/453 dead transitions. [2024-06-27 18:27:02,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 453 transitions, 7724 flow [2024-06-27 18:27:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 18:27:02,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:27:02,223 INFO L175 Difference]: Start difference. First operand has 239 places, 390 transitions, 6240 flow. Second operand 10 states and 250 transitions. [2024-06-27 18:27:02,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 453 transitions, 7724 flow [2024-06-27 18:27:03,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 453 transitions, 7431 flow, removed 87 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:03,401 INFO L231 Difference]: Finished difference. Result has 244 places, 394 transitions, 6325 flow [2024-06-27 18:27:03,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5947, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6325, PETRI_PLACES=244, PETRI_TRANSITIONS=394} [2024-06-27 18:27:03,402 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 189 predicate places. [2024-06-27 18:27:03,402 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 394 transitions, 6325 flow [2024-06-27 18:27:03,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:03,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:03,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:03,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:27:03,402 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:03,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1915178169, now seen corresponding path program 3 times [2024-06-27 18:27:03,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:03,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541747803] [2024-06-27 18:27:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:03,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:04,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541747803] [2024-06-27 18:27:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541747803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:04,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:04,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:04,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245989662] [2024-06-27 18:27:04,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:04,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:04,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:04,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:04,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:27:04,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 394 transitions, 6325 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:04,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:04,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:27:04,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:06,756 INFO L124 PetriNetUnfolderBase]: 7479/11318 cut-off events. [2024-06-27 18:27:06,756 INFO L125 PetriNetUnfolderBase]: For 670050/670084 co-relation queries the response was YES. [2024-06-27 18:27:06,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95032 conditions, 11318 events. 7479/11318 cut-off events. For 670050/670084 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 70194 event pairs, 1839 based on Foata normal form. 30/11218 useless extension candidates. Maximal degree in co-relation 94929. Up to 9665 conditions per place. [2024-06-27 18:27:06,910 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 287 selfloop transitions, 124 changer transitions 0/450 dead transitions. [2024-06-27 18:27:06,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 450 transitions, 7667 flow [2024-06-27 18:27:06,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:27:06,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528344671201814 [2024-06-27 18:27:06,911 INFO L175 Difference]: Start difference. First operand has 244 places, 394 transitions, 6325 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:27:06,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 450 transitions, 7667 flow [2024-06-27 18:27:08,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 450 transitions, 7334 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:08,362 INFO L231 Difference]: Finished difference. Result has 246 places, 397 transitions, 6365 flow [2024-06-27 18:27:08,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5996, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6365, PETRI_PLACES=246, PETRI_TRANSITIONS=397} [2024-06-27 18:27:08,362 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 191 predicate places. [2024-06-27 18:27:08,362 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 397 transitions, 6365 flow [2024-06-27 18:27:08,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:08,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:08,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:08,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:27:08,363 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:08,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1904136279, now seen corresponding path program 4 times [2024-06-27 18:27:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839657241] [2024-06-27 18:27:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:09,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:09,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839657241] [2024-06-27 18:27:09,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839657241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:09,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:09,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394962849] [2024-06-27 18:27:09,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:09,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:09,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:09,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:09,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:27:09,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 397 transitions, 6365 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:09,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:09,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:27:09,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:11,529 INFO L124 PetriNetUnfolderBase]: 7547/11418 cut-off events. [2024-06-27 18:27:11,530 INFO L125 PetriNetUnfolderBase]: For 673110/673144 co-relation queries the response was YES. [2024-06-27 18:27:11,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95546 conditions, 11418 events. 7547/11418 cut-off events. For 673110/673144 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 70940 event pairs, 1839 based on Foata normal form. 30/11318 useless extension candidates. Maximal degree in co-relation 95442. Up to 9905 conditions per place. [2024-06-27 18:27:11,704 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 320 selfloop transitions, 94 changer transitions 0/453 dead transitions. [2024-06-27 18:27:11,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 453 transitions, 7719 flow [2024-06-27 18:27:11,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:27:11,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260770975056689 [2024-06-27 18:27:11,705 INFO L175 Difference]: Start difference. First operand has 246 places, 397 transitions, 6365 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:27:11,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 453 transitions, 7719 flow [2024-06-27 18:27:13,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 453 transitions, 7376 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:13,239 INFO L231 Difference]: Finished difference. Result has 248 places, 400 transitions, 6337 flow [2024-06-27 18:27:13,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6022, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6337, PETRI_PLACES=248, PETRI_TRANSITIONS=400} [2024-06-27 18:27:13,240 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 193 predicate places. [2024-06-27 18:27:13,241 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 400 transitions, 6337 flow [2024-06-27 18:27:13,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:13,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:13,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:13,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:27:13,241 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:13,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1590167938, now seen corresponding path program 8 times [2024-06-27 18:27:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026402962] [2024-06-27 18:27:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026402962] [2024-06-27 18:27:14,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026402962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:14,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:14,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:14,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276143234] [2024-06-27 18:27:14,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:14,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:14,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:14,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:14,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:14,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:27:14,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 400 transitions, 6337 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:14,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:14,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:27:14,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:16,669 INFO L124 PetriNetUnfolderBase]: 7889/11703 cut-off events. [2024-06-27 18:27:16,669 INFO L125 PetriNetUnfolderBase]: For 690835/690865 co-relation queries the response was YES. [2024-06-27 18:27:16,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98657 conditions, 11703 events. 7889/11703 cut-off events. For 690835/690865 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 70464 event pairs, 1759 based on Foata normal form. 15/11606 useless extension candidates. Maximal degree in co-relation 98552. Up to 10273 conditions per place. [2024-06-27 18:27:16,833 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 332 selfloop transitions, 122 changer transitions 0/463 dead transitions. [2024-06-27 18:27:16,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 463 transitions, 8148 flow [2024-06-27 18:27:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:27:16,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192743764172335 [2024-06-27 18:27:16,835 INFO L175 Difference]: Start difference. First operand has 248 places, 400 transitions, 6337 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:27:16,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 463 transitions, 8148 flow [2024-06-27 18:27:18,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 463 transitions, 7865 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:18,222 INFO L231 Difference]: Finished difference. Result has 251 places, 408 transitions, 6552 flow [2024-06-27 18:27:18,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6552, PETRI_PLACES=251, PETRI_TRANSITIONS=408} [2024-06-27 18:27:18,223 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 196 predicate places. [2024-06-27 18:27:18,223 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 408 transitions, 6552 flow [2024-06-27 18:27:18,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:18,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:18,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:18,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:27:18,224 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:18,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1590167659, now seen corresponding path program 8 times [2024-06-27 18:27:18,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:18,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825764284] [2024-06-27 18:27:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:19,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:19,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825764284] [2024-06-27 18:27:19,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825764284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:19,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:19,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304183812] [2024-06-27 18:27:19,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:19,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:19,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:27:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 408 transitions, 6552 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:19,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:19,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:27:19,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:21,674 INFO L124 PetriNetUnfolderBase]: 8069/12304 cut-off events. [2024-06-27 18:27:21,674 INFO L125 PetriNetUnfolderBase]: For 732893/732923 co-relation queries the response was YES. [2024-06-27 18:27:21,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102082 conditions, 12304 events. 8069/12304 cut-off events. For 732893/732923 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 77928 event pairs, 1932 based on Foata normal form. 18/12105 useless extension candidates. Maximal degree in co-relation 101975. Up to 9508 conditions per place. [2024-06-27 18:27:21,842 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 348 selfloop transitions, 119 changer transitions 0/476 dead transitions. [2024-06-27 18:27:21,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 476 transitions, 8742 flow [2024-06-27 18:27:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:27:21,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-27 18:27:21,844 INFO L175 Difference]: Start difference. First operand has 251 places, 408 transitions, 6552 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:27:21,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 476 transitions, 8742 flow [2024-06-27 18:27:23,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 476 transitions, 8306 flow, removed 99 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:23,139 INFO L231 Difference]: Finished difference. Result has 254 places, 416 transitions, 6651 flow [2024-06-27 18:27:23,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6116, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6651, PETRI_PLACES=254, PETRI_TRANSITIONS=416} [2024-06-27 18:27:23,139 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 199 predicate places. [2024-06-27 18:27:23,140 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 416 transitions, 6651 flow [2024-06-27 18:27:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:23,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:23,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:23,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:27:23,140 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:23,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1590427129, now seen corresponding path program 9 times [2024-06-27 18:27:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:23,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567318218] [2024-06-27 18:27:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:23,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:24,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567318218] [2024-06-27 18:27:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567318218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232590783] [2024-06-27 18:27:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:24,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:24,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:27:24,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 416 transitions, 6651 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:24,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:24,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:27:24,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:27,334 INFO L124 PetriNetUnfolderBase]: 8057/12294 cut-off events. [2024-06-27 18:27:27,334 INFO L125 PetriNetUnfolderBase]: For 739447/739477 co-relation queries the response was YES. [2024-06-27 18:27:27,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101877 conditions, 12294 events. 8057/12294 cut-off events. For 739447/739477 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 77865 event pairs, 1924 based on Foata normal form. 18/12095 useless extension candidates. Maximal degree in co-relation 101770. Up to 9502 conditions per place. [2024-06-27 18:27:27,486 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 344 selfloop transitions, 121 changer transitions 0/474 dead transitions. [2024-06-27 18:27:27,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 474 transitions, 8351 flow [2024-06-27 18:27:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 18:27:27,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-06-27 18:27:27,487 INFO L175 Difference]: Start difference. First operand has 254 places, 416 transitions, 6651 flow. Second operand 9 states and 238 transitions. [2024-06-27 18:27:27,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 474 transitions, 8351 flow [2024-06-27 18:27:29,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 474 transitions, 7943 flow, removed 107 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:29,050 INFO L231 Difference]: Finished difference. Result has 258 places, 416 transitions, 6494 flow [2024-06-27 18:27:29,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6494, PETRI_PLACES=258, PETRI_TRANSITIONS=416} [2024-06-27 18:27:29,063 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 203 predicate places. [2024-06-27 18:27:29,063 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 416 transitions, 6494 flow [2024-06-27 18:27:29,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:29,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:29,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:29,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:27:29,064 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:29,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1590436708, now seen corresponding path program 9 times [2024-06-27 18:27:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10327834] [2024-06-27 18:27:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:29,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:30,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:30,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10327834] [2024-06-27 18:27:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10327834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:30,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699278507] [2024-06-27 18:27:30,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:30,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:30,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:30,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:30,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:27:30,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 416 transitions, 6494 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:30,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:30,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:27:30,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:33,136 INFO L124 PetriNetUnfolderBase]: 8071/12323 cut-off events. [2024-06-27 18:27:33,136 INFO L125 PetriNetUnfolderBase]: For 728764/728794 co-relation queries the response was YES. [2024-06-27 18:27:33,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100687 conditions, 12323 events. 8071/12323 cut-off events. For 728764/728794 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 78213 event pairs, 1964 based on Foata normal form. 15/12106 useless extension candidates. Maximal degree in co-relation 100579. Up to 10606 conditions per place. [2024-06-27 18:27:33,296 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 387 selfloop transitions, 88 changer transitions 0/484 dead transitions. [2024-06-27 18:27:33,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 484 transitions, 8204 flow [2024-06-27 18:27:33,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:27:33,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163265306122449 [2024-06-27 18:27:33,298 INFO L175 Difference]: Start difference. First operand has 258 places, 416 transitions, 6494 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:27:33,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 484 transitions, 8204 flow [2024-06-27 18:27:34,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 484 transitions, 7694 flow, removed 111 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:34,894 INFO L231 Difference]: Finished difference. Result has 262 places, 424 transitions, 6382 flow [2024-06-27 18:27:34,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6046, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6382, PETRI_PLACES=262, PETRI_TRANSITIONS=424} [2024-06-27 18:27:34,895 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 207 predicate places. [2024-06-27 18:27:34,895 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 424 transitions, 6382 flow [2024-06-27 18:27:34,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:34,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:34,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:34,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:27:34,896 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:34,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1590437049, now seen corresponding path program 5 times [2024-06-27 18:27:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010572091] [2024-06-27 18:27:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010572091] [2024-06-27 18:27:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010572091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:35,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232191811] [2024-06-27 18:27:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:35,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:36,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:27:36,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 424 transitions, 6382 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:36,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:36,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:27:36,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:38,756 INFO L124 PetriNetUnfolderBase]: 7769/11761 cut-off events. [2024-06-27 18:27:38,757 INFO L125 PetriNetUnfolderBase]: For 720258/720292 co-relation queries the response was YES. [2024-06-27 18:27:38,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96183 conditions, 11761 events. 7769/11761 cut-off events. For 720258/720292 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 73328 event pairs, 1847 based on Foata normal form. 30/11658 useless extension candidates. Maximal degree in co-relation 96073. Up to 10195 conditions per place. [2024-06-27 18:27:38,897 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 354 selfloop transitions, 85 changer transitions 0/482 dead transitions. [2024-06-27 18:27:38,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 482 transitions, 7978 flow [2024-06-27 18:27:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:27:38,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528344671201814 [2024-06-27 18:27:38,898 INFO L175 Difference]: Start difference. First operand has 262 places, 424 transitions, 6382 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:27:38,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 482 transitions, 7978 flow [2024-06-27 18:27:40,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 482 transitions, 7566 flow, removed 126 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:40,216 INFO L231 Difference]: Finished difference. Result has 264 places, 427 transitions, 6273 flow [2024-06-27 18:27:40,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6273, PETRI_PLACES=264, PETRI_TRANSITIONS=427} [2024-06-27 18:27:40,221 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 209 predicate places. [2024-06-27 18:27:40,221 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 427 transitions, 6273 flow [2024-06-27 18:27:40,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:40,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:40,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:40,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:27:40,222 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:40,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1590160219, now seen corresponding path program 10 times [2024-06-27 18:27:40,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083343730] [2024-06-27 18:27:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:40,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:41,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083343730] [2024-06-27 18:27:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083343730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:41,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:41,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353710330] [2024-06-27 18:27:41,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:41,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:41,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:41,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:27:41,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 427 transitions, 6273 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:41,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:41,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:27:41,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:43,868 INFO L124 PetriNetUnfolderBase]: 8065/12314 cut-off events. [2024-06-27 18:27:43,868 INFO L125 PetriNetUnfolderBase]: For 722020/722050 co-relation queries the response was YES. [2024-06-27 18:27:43,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97741 conditions, 12314 events. 8065/12314 cut-off events. For 722020/722050 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 78157 event pairs, 1935 based on Foata normal form. 18/12111 useless extension candidates. Maximal degree in co-relation 97630. Up to 9526 conditions per place. [2024-06-27 18:27:44,018 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 356 selfloop transitions, 119 changer transitions 0/484 dead transitions. [2024-06-27 18:27:44,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 484 transitions, 8023 flow [2024-06-27 18:27:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:27:44,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328798185941043 [2024-06-27 18:27:44,020 INFO L175 Difference]: Start difference. First operand has 264 places, 427 transitions, 6273 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:27:44,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 484 transitions, 8023 flow [2024-06-27 18:27:45,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 484 transitions, 7746 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:45,333 INFO L231 Difference]: Finished difference. Result has 266 places, 427 transitions, 6244 flow [2024-06-27 18:27:45,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5996, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6244, PETRI_PLACES=266, PETRI_TRANSITIONS=427} [2024-06-27 18:27:45,335 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 211 predicate places. [2024-06-27 18:27:45,335 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 427 transitions, 6244 flow [2024-06-27 18:27:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:45,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:45,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:45,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:27:45,336 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:45,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1241004244, now seen corresponding path program 2 times [2024-06-27 18:27:45,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:45,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490221883] [2024-06-27 18:27:45,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:45,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:45,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:45,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490221883] [2024-06-27 18:27:45,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490221883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:45,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:45,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:45,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708748009] [2024-06-27 18:27:45,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:45,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:45,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:45,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:45,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:45,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:27:45,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 427 transitions, 6244 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:45,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:45,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:27:45,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:48,486 INFO L124 PetriNetUnfolderBase]: 7728/11955 cut-off events. [2024-06-27 18:27:48,486 INFO L125 PetriNetUnfolderBase]: For 729986/730068 co-relation queries the response was YES. [2024-06-27 18:27:48,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95157 conditions, 11955 events. 7728/11955 cut-off events. For 729986/730068 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 77393 event pairs, 2185 based on Foata normal form. 73/11827 useless extension candidates. Maximal degree in co-relation 95045. Up to 10604 conditions per place. [2024-06-27 18:27:48,625 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 373 selfloop transitions, 30 changer transitions 0/446 dead transitions. [2024-06-27 18:27:48,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 446 transitions, 7104 flow [2024-06-27 18:27:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:27:48,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-27 18:27:48,627 INFO L175 Difference]: Start difference. First operand has 266 places, 427 transitions, 6244 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:27:48,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 446 transitions, 7104 flow [2024-06-27 18:27:49,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 446 transitions, 6835 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:49,743 INFO L231 Difference]: Finished difference. Result has 265 places, 427 transitions, 6047 flow [2024-06-27 18:27:49,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5977, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6047, PETRI_PLACES=265, PETRI_TRANSITIONS=427} [2024-06-27 18:27:49,743 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 210 predicate places. [2024-06-27 18:27:49,744 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 427 transitions, 6047 flow [2024-06-27 18:27:49,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:49,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:49,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:49,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:27:49,744 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:49,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1267150667, now seen corresponding path program 1 times [2024-06-27 18:27:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:49,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799001810] [2024-06-27 18:27:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799001810] [2024-06-27 18:27:50,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799001810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:50,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:50,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:50,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347651740] [2024-06-27 18:27:50,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:50,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:50,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:50,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:50,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:27:50,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 427 transitions, 6047 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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) [2024-06-27 18:27:50,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:50,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:27:50,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:52,940 INFO L124 PetriNetUnfolderBase]: 7036/11342 cut-off events. [2024-06-27 18:27:52,940 INFO L125 PetriNetUnfolderBase]: For 642096/642133 co-relation queries the response was YES. [2024-06-27 18:27:53,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86494 conditions, 11342 events. 7036/11342 cut-off events. For 642096/642133 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 77007 event pairs, 1820 based on Foata normal form. 39/11135 useless extension candidates. Maximal degree in co-relation 86381. Up to 9595 conditions per place. [2024-06-27 18:27:53,079 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 388 selfloop transitions, 21 changer transitions 0/453 dead transitions. [2024-06-27 18:27:53,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 453 transitions, 7131 flow [2024-06-27 18:27:53,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 18:27:53,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 18:27:53,081 INFO L175 Difference]: Start difference. First operand has 265 places, 427 transitions, 6047 flow. Second operand 6 states and 153 transitions. [2024-06-27 18:27:53,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 453 transitions, 7131 flow [2024-06-27 18:27:54,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 453 transitions, 7055 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:54,178 INFO L231 Difference]: Finished difference. Result has 266 places, 430 transitions, 6083 flow [2024-06-27 18:27:54,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5971, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6083, PETRI_PLACES=266, PETRI_TRANSITIONS=430} [2024-06-27 18:27:54,179 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 211 predicate places. [2024-06-27 18:27:54,179 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 430 transitions, 6083 flow [2024-06-27 18:27:54,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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) [2024-06-27 18:27:54,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:54,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:54,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:27:54,179 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:54,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1240996277, now seen corresponding path program 2 times [2024-06-27 18:27:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:54,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100075554] [2024-06-27 18:27:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:54,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:54,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100075554] [2024-06-27 18:27:54,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100075554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:54,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:54,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:54,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954188568] [2024-06-27 18:27:54,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:54,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:54,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:54,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:54,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:27:54,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 430 transitions, 6083 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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) [2024-06-27 18:27:54,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:54,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:27:54,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:57,013 INFO L124 PetriNetUnfolderBase]: 7000/11123 cut-off events. [2024-06-27 18:27:57,014 INFO L125 PetriNetUnfolderBase]: For 653859/653911 co-relation queries the response was YES. [2024-06-27 18:27:57,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86263 conditions, 11123 events. 7000/11123 cut-off events. For 653859/653911 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 73889 event pairs, 1919 based on Foata normal form. 53/10991 useless extension candidates. Maximal degree in co-relation 86149. Up to 9615 conditions per place. [2024-06-27 18:27:57,343 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 390 selfloop transitions, 13 changer transitions 0/447 dead transitions. [2024-06-27 18:27:57,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 447 transitions, 6945 flow [2024-06-27 18:27:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:27:57,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 18:27:57,357 INFO L175 Difference]: Start difference. First operand has 266 places, 430 transitions, 6083 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:27:57,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 447 transitions, 6945 flow [2024-06-27 18:27:58,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 447 transitions, 6870 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:58,486 INFO L231 Difference]: Finished difference. Result has 269 places, 430 transitions, 6040 flow [2024-06-27 18:27:58,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6008, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6040, PETRI_PLACES=269, PETRI_TRANSITIONS=430} [2024-06-27 18:27:58,487 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 214 predicate places. [2024-06-27 18:27:58,487 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 430 transitions, 6040 flow [2024-06-27 18:27:58,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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) [2024-06-27 18:27:58,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:58,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:58,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:27:58,488 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:58,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:58,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1636036505, now seen corresponding path program 1 times [2024-06-27 18:27:58,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:58,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447763744] [2024-06-27 18:27:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:58,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:59,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:59,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447763744] [2024-06-27 18:27:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447763744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:59,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030276172] [2024-06-27 18:27:59,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:59,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:59,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:27:59,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 430 transitions, 6040 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:59,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:59,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:27:59,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:02,204 INFO L124 PetriNetUnfolderBase]: 8068/12362 cut-off events. [2024-06-27 18:28:02,204 INFO L125 PetriNetUnfolderBase]: For 774225/774225 co-relation queries the response was YES. [2024-06-27 18:28:02,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97620 conditions, 12362 events. 8068/12362 cut-off events. For 774225/774225 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 78882 event pairs, 2167 based on Foata normal form. 3/12154 useless extension candidates. Maximal degree in co-relation 97505. Up to 11180 conditions per place. [2024-06-27 18:28:02,581 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 448 selfloop transitions, 50 changer transitions 0/507 dead transitions. [2024-06-27 18:28:02,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 507 transitions, 8058 flow [2024-06-27 18:28:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:28:02,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-06-27 18:28:02,583 INFO L175 Difference]: Start difference. First operand has 269 places, 430 transitions, 6040 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:28:02,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 507 transitions, 8058 flow [2024-06-27 18:28:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 507 transitions, 8002 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:03,915 INFO L231 Difference]: Finished difference. Result has 275 places, 442 transitions, 6470 flow [2024-06-27 18:28:03,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6470, PETRI_PLACES=275, PETRI_TRANSITIONS=442} [2024-06-27 18:28:03,925 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 220 predicate places. [2024-06-27 18:28:03,925 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 442 transitions, 6470 flow [2024-06-27 18:28:03,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:03,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:03,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:03,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:28:03,926 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:03,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash 782660093, now seen corresponding path program 1 times [2024-06-27 18:28:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:03,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784833133] [2024-06-27 18:28:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat