./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi010.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi010.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/rfi010.i ./goblint.2024-06-19_11-23-25.files/protection/rfi010.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 18:44:49,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:44:49,241 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:44:49,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:44:49,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:44:49,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:44:49,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:44:49,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:44:49,280 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:44:49,283 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:44:49,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:44:49,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:44:49,284 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:44:49,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:44:49,284 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:44:49,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:44:49,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:44:49,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:44:49,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:44:49,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:44:49,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:44:49,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:44:49,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:44:49,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:44:49,286 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:44:49,286 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:44:49,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:44:49,287 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:44:49,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:44:49,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:44:49,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:44:49,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:44:49,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:44:49,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:44:49,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:44:49,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:44:49,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:44:49,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:44:49,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:44:49,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:44:49,290 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:44:49,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:44:49,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:44:49,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:44:49,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:44:49,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:44:49,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:44:49,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:44:49,574 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:44:49,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-27 18:44:50,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:44:50,820 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:44:50,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-27 18:44:50,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd31ff919/9bae9e440c63479580a628ee63f5973d/FLAG5033944c2 [2024-06-27 18:44:50,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd31ff919/9bae9e440c63479580a628ee63f5973d [2024-06-27 18:44:50,852 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:44:50,853 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:44:50,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi010.yml/witness.yml [2024-06-27 18:44:50,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:44:50,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:44:50,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:44:50,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:44:50,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:44:50,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:44:50" (1/2) ... [2024-06-27 18:44:50,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f21e5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:44:50, skipping insertion in model container [2024-06-27 18:44:50,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:44:50" (1/2) ... [2024-06-27 18:44:50,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25030891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:44:50, skipping insertion in model container [2024-06-27 18:44:50,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:44:50" (2/2) ... [2024-06-27 18:44:50,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f21e5fb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:50, skipping insertion in model container [2024-06-27 18:44:50,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:44:50" (2/2) ... [2024-06-27 18:44:50,978 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:44:51,035 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:44:51,036 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] (((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:44:51,036 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:44:51,036 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:44:51,037 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-27 18:44:51,076 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:44:51,276 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/rfi010.i[983,996] [2024-06-27 18:44:51,447 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:44:51,454 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:44:51,486 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/rfi010.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:44:51,559 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:44:51,595 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:44:51,596 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51 WrapperNode [2024-06-27 18:44:51,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:44:51,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:44:51,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:44:51,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:44:51,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,660 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-06-27 18:44:51,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:44:51,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:44:51,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:44:51,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:44:51,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,703 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 18:44:51,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:44:51,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:44:51,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:44:51,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:44:51,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (1/1) ... [2024-06-27 18:44:51,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:44:51,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:44:51,785 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 18:44:51,804 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 18:44:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:44:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:44:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:44:51,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:44:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:44:51,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:44:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:44:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:44:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:44:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:44:51,823 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 18:44:51,938 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:44:51,940 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:44:52,225 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:44:52,225 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:44:52,361 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:44:52,361 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:44:52,363 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:44:52 BoogieIcfgContainer [2024-06-27 18:44:52,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:44:52,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:44:52,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:44:52,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:44:52,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:44:50" (1/4) ... [2024-06-27 18:44:52,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70326324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:44:52, skipping insertion in model container [2024-06-27 18:44:52,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:44:50" (2/4) ... [2024-06-27 18:44:52,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70326324 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:44:52, skipping insertion in model container [2024-06-27 18:44:52,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:44:51" (3/4) ... [2024-06-27 18:44:52,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70326324 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:44:52, skipping insertion in model container [2024-06-27 18:44:52,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:44:52" (4/4) ... [2024-06-27 18:44:52,376 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi010.i [2024-06-27 18:44:52,390 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:44:52,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:44:52,390 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:44:52,430 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:44:52,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:44:52,485 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:44:52,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:44:52,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 18:44:52,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:44:52,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:44:52,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:44:52,513 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;@220182b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:44:52,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:44:52,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:44:52,517 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:44:52,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:44:52,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:52,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:44:52,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:52,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash 341274721, now seen corresponding path program 1 times [2024-06-27 18:44:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:52,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477437540] [2024-06-27 18:44:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:52,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:53,292 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 18:44:53,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:53,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477437540] [2024-06-27 18:44:53,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477437540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:53,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:53,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:44:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059960710] [2024-06-27 18:44:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:44:53,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:44:53,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:44:53,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 18:44:53,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 18:44:53,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:53,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 18:44:53,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:53,581 INFO L124 PetriNetUnfolderBase]: 384/793 cut-off events. [2024-06-27 18:44:53,582 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 18:44:53,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 793 events. 384/793 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4437 event pairs, 284 based on Foata normal form. 31/742 useless extension candidates. Maximal degree in co-relation 1446. Up to 639 conditions per place. [2024-06-27 18:44:53,587 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 29 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:44:53,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 165 flow [2024-06-27 18:44:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:44:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:44:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 18:44:53,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-06-27 18:44:53,597 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 79 transitions. [2024-06-27 18:44:53,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 165 flow [2024-06-27 18:44:53,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:44:53,601 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:44:53,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-27 18:44:53,605 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:44:53,605 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:44:53,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 18:44:53,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:53,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:53,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:44:53,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:53,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1547525120, now seen corresponding path program 1 times [2024-06-27 18:44:53,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:53,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335435675] [2024-06-27 18:44:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:53,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:54,067 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 18:44:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335435675] [2024-06-27 18:44:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335435675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:54,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:54,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:44:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847475244] [2024-06-27 18:44:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:54,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:44:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:54,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:44:54,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:44:54,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:44:54,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:54,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:54,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:44:54,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:54,261 INFO L124 PetriNetUnfolderBase]: 434/884 cut-off events. [2024-06-27 18:44:54,261 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-06-27 18:44:54,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 884 events. 434/884 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4941 event pairs, 225 based on Foata normal form. 4/813 useless extension candidates. Maximal degree in co-relation 1800. Up to 686 conditions per place. [2024-06-27 18:44:54,267 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-27 18:44:54,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 240 flow [2024-06-27 18:44:54,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:44:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:44:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-27 18:44:54,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-06-27 18:44:54,269 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 100 transitions. [2024-06-27 18:44:54,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 240 flow [2024-06-27 18:44:54,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:44:54,270 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-27 18:44:54,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-27 18:44:54,271 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 18:44:54,271 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-27 18:44:54,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:54,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:54,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:54,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:44:54,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:54,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash 727998747, now seen corresponding path program 1 times [2024-06-27 18:44:54,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:54,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155324921] [2024-06-27 18:44:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:54,322 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 18:44:54,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:54,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155324921] [2024-06-27 18:44:54,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155324921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:54,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:54,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:44:54,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863975903] [2024-06-27 18:44:54,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:54,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:44:54,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:44:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:44:54,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-27 18:44:54,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:54,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:54,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-27 18:44:54,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:54,385 INFO L124 PetriNetUnfolderBase]: 163/382 cut-off events. [2024-06-27 18:44:54,385 INFO L125 PetriNetUnfolderBase]: For 113/120 co-relation queries the response was YES. [2024-06-27 18:44:54,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 382 events. 163/382 cut-off events. For 113/120 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2060 event pairs, 38 based on Foata normal form. 6/366 useless extension candidates. Maximal degree in co-relation 776. Up to 240 conditions per place. [2024-06-27 18:44:54,387 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 20 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-06-27 18:44:54,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 179 flow [2024-06-27 18:44:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:44:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:44:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 18:44:54,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-06-27 18:44:54,388 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 3 states and 81 transitions. [2024-06-27 18:44:54,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 179 flow [2024-06-27 18:44:54,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 170 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:44:54,390 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 114 flow [2024-06-27 18:44:54,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-27 18:44:54,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-27 18:44:54,391 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 114 flow [2024-06-27 18:44:54,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:54,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:54,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:54,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:44:54,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:54,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -473369889, now seen corresponding path program 1 times [2024-06-27 18:44:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:54,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682513158] [2024-06-27 18:44:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:54,803 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 18:44:54,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:54,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682513158] [2024-06-27 18:44:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682513158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:54,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:54,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:44:54,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352891375] [2024-06-27 18:44:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:54,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:44:54,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:44:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:44:54,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:44:54,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 18:44:54,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:54,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:44:54,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:55,076 INFO L124 PetriNetUnfolderBase]: 373/760 cut-off events. [2024-06-27 18:44:55,076 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-06-27 18:44:55,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 760 events. 373/760 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4071 event pairs, 207 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 1653. Up to 613 conditions per place. [2024-06-27 18:44:55,081 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 35 selfloop transitions, 7 changer transitions 2/54 dead transitions. [2024-06-27 18:44:55,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 54 transitions, 248 flow [2024-06-27 18:44:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:44:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:44:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-27 18:44:55,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459459459459459 [2024-06-27 18:44:55,084 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 114 flow. Second operand 5 states and 101 transitions. [2024-06-27 18:44:55,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 54 transitions, 248 flow [2024-06-27 18:44:55,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:44:55,088 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 155 flow [2024-06-27 18:44:55,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-27 18:44:55,089 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 18:44:55,089 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 155 flow [2024-06-27 18:44:55,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 18:44:55,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:55,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:55,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:44:55,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:55,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash 137168702, now seen corresponding path program 1 times [2024-06-27 18:44:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903698599] [2024-06-27 18:44:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:55,780 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 18:44:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903698599] [2024-06-27 18:44:55,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903698599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:55,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:55,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:44:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028601941] [2024-06-27 18:44:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:44:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:44:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:44:55,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:44:55,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:44:55,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:55,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:44:55,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:56,045 INFO L124 PetriNetUnfolderBase]: 318/659 cut-off events. [2024-06-27 18:44:56,046 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2024-06-27 18:44:56,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1576 conditions, 659 events. 318/659 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3450 event pairs, 54 based on Foata normal form. 4/630 useless extension candidates. Maximal degree in co-relation 1559. Up to 472 conditions per place. [2024-06-27 18:44:56,049 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 46 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-27 18:44:56,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 329 flow [2024-06-27 18:44:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:44:56,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:44:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 18:44:56,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-27 18:44:56,050 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 155 flow. Second operand 6 states and 132 transitions. [2024-06-27 18:44:56,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 329 flow [2024-06-27 18:44:56,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 320 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:44:56,052 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 176 flow [2024-06-27 18:44:56,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-27 18:44:56,053 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-27 18:44:56,053 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 176 flow [2024-06-27 18:44:56,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:44:56,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:56,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:56,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:44:56,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:56,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1789563939, now seen corresponding path program 1 times [2024-06-27 18:44:56,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:56,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004665314] [2024-06-27 18:44:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:56,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:56,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:56,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004665314] [2024-06-27 18:44:56,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004665314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:56,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:56,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:44:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957750700] [2024-06-27 18:44:56,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:56,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:44:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:44:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:44:56,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:44:56,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:56,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:56,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:44:56,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:56,875 INFO L124 PetriNetUnfolderBase]: 319/680 cut-off events. [2024-06-27 18:44:56,875 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-06-27 18:44:56,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 680 events. 319/680 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3644 event pairs, 105 based on Foata normal form. 1/655 useless extension candidates. Maximal degree in co-relation 1695. Up to 515 conditions per place. [2024-06-27 18:44:56,878 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 41 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-06-27 18:44:56,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 322 flow [2024-06-27 18:44:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:44:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:44:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-27 18:44:56,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 18:44:56,880 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 176 flow. Second operand 6 states and 117 transitions. [2024-06-27 18:44:56,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 322 flow [2024-06-27 18:44:56,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 302 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:56,882 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 191 flow [2024-06-27 18:44:56,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-06-27 18:44:56,883 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-27 18:44:56,883 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 191 flow [2024-06-27 18:44:56,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:56,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:56,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:56,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:44:56,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:56,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash 351387582, now seen corresponding path program 1 times [2024-06-27 18:44:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394015027] [2024-06-27 18:44:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:57,317 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 18:44:57,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:57,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394015027] [2024-06-27 18:44:57,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394015027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:57,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:57,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:44:57,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055770847] [2024-06-27 18:44:57,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:57,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:44:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:57,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:44:57,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:44:57,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:44:57,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 18:44:57,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:57,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:44:57,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:57,593 INFO L124 PetriNetUnfolderBase]: 400/821 cut-off events. [2024-06-27 18:44:57,593 INFO L125 PetriNetUnfolderBase]: For 922/922 co-relation queries the response was YES. [2024-06-27 18:44:57,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 821 events. 400/821 cut-off events. For 922/922 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4513 event pairs, 127 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 2123. Up to 631 conditions per place. [2024-06-27 18:44:57,597 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 48 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-27 18:44:57,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 373 flow [2024-06-27 18:44:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:44:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:44:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 18:44:57,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180180180180181 [2024-06-27 18:44:57,599 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 191 flow. Second operand 6 states and 115 transitions. [2024-06-27 18:44:57,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 373 flow [2024-06-27 18:44:57,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 354 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:57,601 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 233 flow [2024-06-27 18:44:57,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-27 18:44:57,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-27 18:44:57,602 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 233 flow [2024-06-27 18:44:57,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 18:44:57,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:57,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:44:57,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:57,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash 358083582, now seen corresponding path program 2 times [2024-06-27 18:44:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:57,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977198055] [2024-06-27 18:44:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:57,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:58,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:58,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977198055] [2024-06-27 18:44:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977198055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:44:58,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024707910] [2024-06-27 18:44:58,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:44:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:58,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:44:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:44:58,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:44:58,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 18:44:58,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:58,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:44:58,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:58,265 INFO L124 PetriNetUnfolderBase]: 412/848 cut-off events. [2024-06-27 18:44:58,266 INFO L125 PetriNetUnfolderBase]: For 1299/1299 co-relation queries the response was YES. [2024-06-27 18:44:58,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 848 events. 412/848 cut-off events. For 1299/1299 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4708 event pairs, 123 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 2342. Up to 619 conditions per place. [2024-06-27 18:44:58,270 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 47 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-27 18:44:58,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 415 flow [2024-06-27 18:44:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:44:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:44:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-27 18:44:58,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-06-27 18:44:58,273 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 233 flow. Second operand 6 states and 116 transitions. [2024-06-27 18:44:58,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 415 flow [2024-06-27 18:44:58,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 396 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:58,278 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 261 flow [2024-06-27 18:44:58,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-27 18:44:58,280 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-27 18:44:58,280 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 261 flow [2024-06-27 18:44:58,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 18:44:58,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:58,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:58,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:44:58,281 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:58,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1411598560, now seen corresponding path program 1 times [2024-06-27 18:44:58,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457092768] [2024-06-27 18:44:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:58,949 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 18:44:58,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457092768] [2024-06-27 18:44:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457092768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:58,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:58,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:58,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335000787] [2024-06-27 18:44:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:58,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:58,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:58,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:59,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:44:59,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 261 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:44:59,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:59,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:44:59,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:59,303 INFO L124 PetriNetUnfolderBase]: 488/990 cut-off events. [2024-06-27 18:44:59,304 INFO L125 PetriNetUnfolderBase]: For 1871/1871 co-relation queries the response was YES. [2024-06-27 18:44:59,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2943 conditions, 990 events. 488/990 cut-off events. For 1871/1871 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5651 event pairs, 131 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 2918. Up to 703 conditions per place. [2024-06-27 18:44:59,309 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 62 selfloop transitions, 24 changer transitions 0/95 dead transitions. [2024-06-27 18:44:59,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 619 flow [2024-06-27 18:44:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 18:44:59,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 18:44:59,311 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 261 flow. Second operand 8 states and 155 transitions. [2024-06-27 18:44:59,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 619 flow [2024-06-27 18:44:59,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 578 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:59,315 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 417 flow [2024-06-27 18:44:59,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=417, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-27 18:44:59,316 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-27 18:44:59,316 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 417 flow [2024-06-27 18:44:59,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:44:59,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:59,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:59,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:44:59,317 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:59,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1991886114, now seen corresponding path program 2 times [2024-06-27 18:44:59,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:59,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366673499] [2024-06-27 18:44:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:59,873 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 18:44:59,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:59,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366673499] [2024-06-27 18:44:59,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366673499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:59,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:59,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019634550] [2024-06-27 18:44:59,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:59,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:59,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:59,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:44:59,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 417 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:44:59,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:59,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:44:59,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:00,310 INFO L124 PetriNetUnfolderBase]: 521/1060 cut-off events. [2024-06-27 18:45:00,311 INFO L125 PetriNetUnfolderBase]: For 2864/2864 co-relation queries the response was YES. [2024-06-27 18:45:00,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 1060 events. 521/1060 cut-off events. For 2864/2864 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6098 event pairs, 129 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 3554. Up to 751 conditions per place. [2024-06-27 18:45:00,319 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 68 selfloop transitions, 20 changer transitions 0/97 dead transitions. [2024-06-27 18:45:00,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 719 flow [2024-06-27 18:45:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:45:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:45:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 18:45:00,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-06-27 18:45:00,321 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 417 flow. Second operand 7 states and 134 transitions. [2024-06-27 18:45:00,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 719 flow [2024-06-27 18:45:00,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 97 transitions, 695 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 18:45:00,326 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 489 flow [2024-06-27 18:45:00,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-06-27 18:45:00,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 18:45:00,327 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 489 flow [2024-06-27 18:45:00,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:45:00,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:00,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:00,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:45:00,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:00,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1784013444, now seen corresponding path program 3 times [2024-06-27 18:45:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:00,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147261465] [2024-06-27 18:45:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:00,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:00,888 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 18:45:00,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:00,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147261465] [2024-06-27 18:45:00,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147261465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:00,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:00,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:45:00,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441560983] [2024-06-27 18:45:00,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:00,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:45:00,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:00,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:45:00,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:45:00,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:00,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 489 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:45:00,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:00,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:00,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:01,199 INFO L124 PetriNetUnfolderBase]: 548/1092 cut-off events. [2024-06-27 18:45:01,199 INFO L125 PetriNetUnfolderBase]: For 3728/3728 co-relation queries the response was YES. [2024-06-27 18:45:01,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 1092 events. 548/1092 cut-off events. For 3728/3728 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6233 event pairs, 123 based on Foata normal form. 1/1049 useless extension candidates. Maximal degree in co-relation 4029. Up to 716 conditions per place. [2024-06-27 18:45:01,207 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 67 selfloop transitions, 28 changer transitions 0/104 dead transitions. [2024-06-27 18:45:01,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 841 flow [2024-06-27 18:45:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:45:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:45:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 18:45:01,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525096525096525 [2024-06-27 18:45:01,208 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 489 flow. Second operand 7 states and 136 transitions. [2024-06-27 18:45:01,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 841 flow [2024-06-27 18:45:01,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 801 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:01,213 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 578 flow [2024-06-27 18:45:01,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2024-06-27 18:45:01,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-27 18:45:01,214 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 578 flow [2024-06-27 18:45:01,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:45:01,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:01,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:01,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:45:01,215 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:01,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1784310114, now seen corresponding path program 4 times [2024-06-27 18:45:01,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:01,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983259600] [2024-06-27 18:45:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:01,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:01,809 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 18:45:01,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:01,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983259600] [2024-06-27 18:45:01,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983259600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:01,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:01,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:45:01,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332725972] [2024-06-27 18:45:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:01,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:45:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:45:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:45:01,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:01,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 578 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:45:01,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:01,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:01,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:02,199 INFO L124 PetriNetUnfolderBase]: 544/1099 cut-off events. [2024-06-27 18:45:02,199 INFO L125 PetriNetUnfolderBase]: For 4717/4717 co-relation queries the response was YES. [2024-06-27 18:45:02,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 1099 events. 544/1099 cut-off events. For 4717/4717 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6303 event pairs, 122 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 4360. Up to 778 conditions per place. [2024-06-27 18:45:02,206 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 76 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2024-06-27 18:45:02,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 893 flow [2024-06-27 18:45:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:45:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:45:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 18:45:02,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212355212355212 [2024-06-27 18:45:02,207 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 578 flow. Second operand 7 states and 135 transitions. [2024-06-27 18:45:02,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 893 flow [2024-06-27 18:45:02,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 105 transitions, 855 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:45:02,213 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 597 flow [2024-06-27 18:45:02,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=597, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-06-27 18:45:02,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-27 18:45:02,214 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 597 flow [2024-06-27 18:45:02,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:45:02,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:02,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:02,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:45:02,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:02,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash -68037410, now seen corresponding path program 1 times [2024-06-27 18:45:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:02,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792623927] [2024-06-27 18:45:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:02,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:02,862 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 18:45:02,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792623927] [2024-06-27 18:45:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792623927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:02,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:02,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:45:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138400252] [2024-06-27 18:45:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:02,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:45:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:45:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:45:02,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:02,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 597 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:45:02,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:02,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:02,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:03,214 INFO L124 PetriNetUnfolderBase]: 545/1112 cut-off events. [2024-06-27 18:45:03,214 INFO L125 PetriNetUnfolderBase]: For 4909/4911 co-relation queries the response was YES. [2024-06-27 18:45:03,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4509 conditions, 1112 events. 545/1112 cut-off events. For 4909/4911 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6462 event pairs, 146 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 4474. Up to 848 conditions per place. [2024-06-27 18:45:03,221 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 82 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-06-27 18:45:03,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 873 flow [2024-06-27 18:45:03,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:45:03,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:45:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 18:45:03,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057915057915058 [2024-06-27 18:45:03,223 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 597 flow. Second operand 7 states and 131 transitions. [2024-06-27 18:45:03,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 873 flow [2024-06-27 18:45:03,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 103 transitions, 825 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:03,230 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 593 flow [2024-06-27 18:45:03,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=593, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-06-27 18:45:03,231 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-06-27 18:45:03,231 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 593 flow [2024-06-27 18:45:03,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:45:03,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:03,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:03,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:45:03,232 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:03,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash -536678853, now seen corresponding path program 1 times [2024-06-27 18:45:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:03,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103867561] [2024-06-27 18:45:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:03,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:03,812 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 18:45:03,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:03,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103867561] [2024-06-27 18:45:03,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103867561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:03,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:03,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:45:03,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927770516] [2024-06-27 18:45:03,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:03,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:45:03,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:45:03,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:45:03,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:03,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 593 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:45:03,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:03,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:03,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:04,231 INFO L124 PetriNetUnfolderBase]: 543/1063 cut-off events. [2024-06-27 18:45:04,231 INFO L125 PetriNetUnfolderBase]: For 4947/4947 co-relation queries the response was YES. [2024-06-27 18:45:04,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4424 conditions, 1063 events. 543/1063 cut-off events. For 4947/4947 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6085 event pairs, 141 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 4388. Up to 830 conditions per place. [2024-06-27 18:45:04,237 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 78 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2024-06-27 18:45:04,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 107 transitions, 891 flow [2024-06-27 18:45:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:45:04,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:45:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 18:45:04,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-06-27 18:45:04,239 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 593 flow. Second operand 7 states and 134 transitions. [2024-06-27 18:45:04,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 107 transitions, 891 flow [2024-06-27 18:45:04,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 107 transitions, 839 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:04,244 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 617 flow [2024-06-27 18:45:04,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=617, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2024-06-27 18:45:04,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-27 18:45:04,245 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 617 flow [2024-06-27 18:45:04,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 18:45:04,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:04,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:04,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:45:04,246 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:04,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1918583505, now seen corresponding path program 1 times [2024-06-27 18:45:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:04,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252613854] [2024-06-27 18:45:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:04,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:04,874 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 18:45:04,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:04,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252613854] [2024-06-27 18:45:04,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252613854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:04,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:04,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:04,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091479567] [2024-06-27 18:45:04,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:04,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:04,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:04,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:04,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:04,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:04,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 617 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:04,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:04,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:04,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:05,200 INFO L124 PetriNetUnfolderBase]: 565/1093 cut-off events. [2024-06-27 18:45:05,201 INFO L125 PetriNetUnfolderBase]: For 5447/5447 co-relation queries the response was YES. [2024-06-27 18:45:05,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 1093 events. 565/1093 cut-off events. For 5447/5447 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6256 event pairs, 133 based on Foata normal form. 2/1063 useless extension candidates. Maximal degree in co-relation 4586. Up to 786 conditions per place. [2024-06-27 18:45:05,208 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 84 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2024-06-27 18:45:05,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 979 flow [2024-06-27 18:45:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 18:45:05,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 18:45:05,209 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 617 flow. Second operand 8 states and 153 transitions. [2024-06-27 18:45:05,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 979 flow [2024-06-27 18:45:05,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 928 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:05,217 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 657 flow [2024-06-27 18:45:05,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=657, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-06-27 18:45:05,217 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-27 18:45:05,217 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 657 flow [2024-06-27 18:45:05,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:05,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:05,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:05,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:45:05,218 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:05,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash 530485277, now seen corresponding path program 2 times [2024-06-27 18:45:05,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:05,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893360486] [2024-06-27 18:45:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:05,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:05,878 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 18:45:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:05,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893360486] [2024-06-27 18:45:05,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893360486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:05,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:05,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:05,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760512892] [2024-06-27 18:45:05,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:05,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:05,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:05,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:05,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 657 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:05,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:05,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:05,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:06,315 INFO L124 PetriNetUnfolderBase]: 576/1176 cut-off events. [2024-06-27 18:45:06,315 INFO L125 PetriNetUnfolderBase]: For 6544/6546 co-relation queries the response was YES. [2024-06-27 18:45:06,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 1176 events. 576/1176 cut-off events. For 6544/6546 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6903 event pairs, 149 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 4923. Up to 896 conditions per place. [2024-06-27 18:45:06,330 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 93 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-06-27 18:45:06,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 987 flow [2024-06-27 18:45:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:45:06,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:45:06,332 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 657 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:45:06,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 987 flow [2024-06-27 18:45:06,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 115 transitions, 920 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:06,340 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 645 flow [2024-06-27 18:45:06,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=645, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2024-06-27 18:45:06,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-27 18:45:06,341 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 645 flow [2024-06-27 18:45:06,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:06,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:06,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:06,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:45:06,341 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:06,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:06,342 INFO L85 PathProgramCache]: Analyzing trace with hash 530158847, now seen corresponding path program 3 times [2024-06-27 18:45:06,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:06,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119872928] [2024-06-27 18:45:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:06,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:07,006 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 18:45:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119872928] [2024-06-27 18:45:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119872928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:07,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:07,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:07,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835112944] [2024-06-27 18:45:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:07,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:07,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:07,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:07,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 645 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:07,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:07,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:07,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:07,378 INFO L124 PetriNetUnfolderBase]: 603/1175 cut-off events. [2024-06-27 18:45:07,378 INFO L125 PetriNetUnfolderBase]: For 7324/7324 co-relation queries the response was YES. [2024-06-27 18:45:07,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5158 conditions, 1175 events. 603/1175 cut-off events. For 7324/7324 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6692 event pairs, 121 based on Foata normal form. 1/1137 useless extension candidates. Maximal degree in co-relation 5119. Up to 713 conditions per place. [2024-06-27 18:45:07,385 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 77 selfloop transitions, 40 changer transitions 0/126 dead transitions. [2024-06-27 18:45:07,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 1127 flow [2024-06-27 18:45:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:45:07,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 18:45:07,388 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 645 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:45:07,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 1127 flow [2024-06-27 18:45:07,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 126 transitions, 1085 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:07,400 INFO L231 Difference]: Finished difference. Result has 94 places, 97 transitions, 810 flow [2024-06-27 18:45:07,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=810, PETRI_PLACES=94, PETRI_TRANSITIONS=97} [2024-06-27 18:45:07,400 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-27 18:45:07,401 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 97 transitions, 810 flow [2024-06-27 18:45:07,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:07,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:07,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:07,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:45:07,401 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:07,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:07,402 INFO L85 PathProgramCache]: Analyzing trace with hash 520962077, now seen corresponding path program 4 times [2024-06-27 18:45:07,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:07,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801604840] [2024-06-27 18:45:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:07,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:07,980 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 18:45:07,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:07,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801604840] [2024-06-27 18:45:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801604840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:07,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997895437] [2024-06-27 18:45:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:07,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:08,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:08,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 97 transitions, 810 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:08,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:08,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:08,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:08,320 INFO L124 PetriNetUnfolderBase]: 621/1178 cut-off events. [2024-06-27 18:45:08,320 INFO L125 PetriNetUnfolderBase]: For 9429/9429 co-relation queries the response was YES. [2024-06-27 18:45:08,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 1178 events. 621/1178 cut-off events. For 9429/9429 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6746 event pairs, 125 based on Foata normal form. 4/1145 useless extension candidates. Maximal degree in co-relation 5649. Up to 854 conditions per place. [2024-06-27 18:45:08,326 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 93 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-27 18:45:08,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 128 transitions, 1232 flow [2024-06-27 18:45:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 18:45:08,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 18:45:08,328 INFO L175 Difference]: Start difference. First operand has 94 places, 97 transitions, 810 flow. Second operand 8 states and 155 transitions. [2024-06-27 18:45:08,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 128 transitions, 1232 flow [2024-06-27 18:45:08,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 1178 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:45:08,339 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 866 flow [2024-06-27 18:45:08,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=866, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2024-06-27 18:45:08,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-27 18:45:08,339 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 866 flow [2024-06-27 18:45:08,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:08,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:08,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:08,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:45:08,340 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:08,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash 530497181, now seen corresponding path program 1 times [2024-06-27 18:45:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348352079] [2024-06-27 18:45:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:08,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:09,312 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 18:45:09,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:09,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348352079] [2024-06-27 18:45:09,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348352079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:09,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:09,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:09,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637005504] [2024-06-27 18:45:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:09,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:09,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:09,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:09,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:09,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:09,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 866 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:09,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:09,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:09,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:09,741 INFO L124 PetriNetUnfolderBase]: 622/1245 cut-off events. [2024-06-27 18:45:09,742 INFO L125 PetriNetUnfolderBase]: For 10039/10039 co-relation queries the response was YES. [2024-06-27 18:45:09,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5923 conditions, 1245 events. 622/1245 cut-off events. For 10039/10039 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7348 event pairs, 152 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 5878. Up to 947 conditions per place. [2024-06-27 18:45:09,751 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 109 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2024-06-27 18:45:09,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1238 flow [2024-06-27 18:45:09,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:45:09,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:45:09,753 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 866 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:45:09,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1238 flow [2024-06-27 18:45:09,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 132 transitions, 1131 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:09,767 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 803 flow [2024-06-27 18:45:09,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=803, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2024-06-27 18:45:09,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-27 18:45:09,769 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 803 flow [2024-06-27 18:45:09,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:09,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:09,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:09,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:45:09,769 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:09,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1346207741, now seen corresponding path program 1 times [2024-06-27 18:45:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:09,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272715941] [2024-06-27 18:45:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:10,750 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 18:45:10,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:10,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272715941] [2024-06-27 18:45:10,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272715941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:10,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:10,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:10,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251221717] [2024-06-27 18:45:10,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:10,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:10,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:10,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:10,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:10,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:10,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:10,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:10,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:11,254 INFO L124 PetriNetUnfolderBase]: 636/1252 cut-off events. [2024-06-27 18:45:11,254 INFO L125 PetriNetUnfolderBase]: For 9031/9031 co-relation queries the response was YES. [2024-06-27 18:45:11,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5734 conditions, 1252 events. 636/1252 cut-off events. For 9031/9031 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7437 event pairs, 148 based on Foata normal form. 1/1211 useless extension candidates. Maximal degree in co-relation 5689. Up to 937 conditions per place. [2024-06-27 18:45:11,262 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 97 selfloop transitions, 28 changer transitions 0/134 dead transitions. [2024-06-27 18:45:11,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 134 transitions, 1207 flow [2024-06-27 18:45:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:11,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 18:45:11,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 18:45:11,265 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 803 flow. Second operand 8 states and 155 transitions. [2024-06-27 18:45:11,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 134 transitions, 1207 flow [2024-06-27 18:45:11,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 134 transitions, 1170 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:11,279 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 906 flow [2024-06-27 18:45:11,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=906, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2024-06-27 18:45:11,280 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-27 18:45:11,280 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 906 flow [2024-06-27 18:45:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:11,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:11,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:11,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:45:11,281 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:11,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1352873981, now seen corresponding path program 2 times [2024-06-27 18:45:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:11,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069040543] [2024-06-27 18:45:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:12,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:12,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069040543] [2024-06-27 18:45:12,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069040543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:12,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:12,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090348255] [2024-06-27 18:45:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:12,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:12,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:12,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:12,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 906 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:12,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:12,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:12,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:12,521 INFO L124 PetriNetUnfolderBase]: 647/1266 cut-off events. [2024-06-27 18:45:12,521 INFO L125 PetriNetUnfolderBase]: For 10002/10002 co-relation queries the response was YES. [2024-06-27 18:45:12,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6005 conditions, 1266 events. 647/1266 cut-off events. For 10002/10002 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7491 event pairs, 151 based on Foata normal form. 1/1227 useless extension candidates. Maximal degree in co-relation 5958. Up to 932 conditions per place. [2024-06-27 18:45:12,529 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 102 selfloop transitions, 23 changer transitions 0/134 dead transitions. [2024-06-27 18:45:12,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 134 transitions, 1302 flow [2024-06-27 18:45:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:12,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 18:45:12,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:45:12,530 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 906 flow. Second operand 8 states and 152 transitions. [2024-06-27 18:45:12,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 134 transitions, 1302 flow [2024-06-27 18:45:12,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 134 transitions, 1234 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:12,545 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 926 flow [2024-06-27 18:45:12,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2024-06-27 18:45:12,546 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-27 18:45:12,546 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 926 flow [2024-06-27 18:45:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:12,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:12,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:12,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:45:12,547 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:12,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 549500641, now seen corresponding path program 1 times [2024-06-27 18:45:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728691527] [2024-06-27 18:45:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:12,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:13,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728691527] [2024-06-27 18:45:13,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728691527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:13,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:13,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:13,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622512583] [2024-06-27 18:45:13,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:13,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:13,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:13,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:13,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 926 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 18:45:13,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:13,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:13,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:13,644 INFO L124 PetriNetUnfolderBase]: 669/1294 cut-off events. [2024-06-27 18:45:13,645 INFO L125 PetriNetUnfolderBase]: For 11307/11307 co-relation queries the response was YES. [2024-06-27 18:45:13,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6332 conditions, 1294 events. 669/1294 cut-off events. For 11307/11307 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7665 event pairs, 147 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 6283. Up to 927 conditions per place. [2024-06-27 18:45:13,654 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 102 selfloop transitions, 26 changer transitions 0/137 dead transitions. [2024-06-27 18:45:13,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 137 transitions, 1346 flow [2024-06-27 18:45:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 18:45:13,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-06-27 18:45:13,656 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 926 flow. Second operand 8 states and 154 transitions. [2024-06-27 18:45:13,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 137 transitions, 1346 flow [2024-06-27 18:45:13,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 137 transitions, 1276 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:13,670 INFO L231 Difference]: Finished difference. Result has 109 places, 110 transitions, 973 flow [2024-06-27 18:45:13,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=973, PETRI_PLACES=109, PETRI_TRANSITIONS=110} [2024-06-27 18:45:13,671 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-27 18:45:13,671 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 110 transitions, 973 flow [2024-06-27 18:45:13,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 18:45:13,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:13,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:13,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:45:13,672 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:13,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:13,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1030283571, now seen corresponding path program 3 times [2024-06-27 18:45:13,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:13,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762874643] [2024-06-27 18:45:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:14,461 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 18:45:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762874643] [2024-06-27 18:45:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762874643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:14,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:14,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:14,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292001359] [2024-06-27 18:45:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:14,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:14,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:14,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:14,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:14,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:14,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 973 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:14,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:14,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:14,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:14,889 INFO L124 PetriNetUnfolderBase]: 680/1306 cut-off events. [2024-06-27 18:45:14,889 INFO L125 PetriNetUnfolderBase]: For 12454/12454 co-relation queries the response was YES. [2024-06-27 18:45:14,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6589 conditions, 1306 events. 680/1306 cut-off events. For 12454/12454 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7720 event pairs, 133 based on Foata normal form. 1/1264 useless extension candidates. Maximal degree in co-relation 6539. Up to 980 conditions per place. [2024-06-27 18:45:14,897 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 108 selfloop transitions, 23 changer transitions 0/140 dead transitions. [2024-06-27 18:45:14,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 140 transitions, 1417 flow [2024-06-27 18:45:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 18:45:14,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 18:45:14,898 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 973 flow. Second operand 8 states and 153 transitions. [2024-06-27 18:45:14,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 140 transitions, 1417 flow [2024-06-27 18:45:14,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 140 transitions, 1336 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:14,914 INFO L231 Difference]: Finished difference. Result has 111 places, 112 transitions, 985 flow [2024-06-27 18:45:14,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=985, PETRI_PLACES=111, PETRI_TRANSITIONS=112} [2024-06-27 18:45:14,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-27 18:45:14,915 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 112 transitions, 985 flow [2024-06-27 18:45:14,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:14,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:14,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:14,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:45:14,916 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:14,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash -744953061, now seen corresponding path program 4 times [2024-06-27 18:45:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245105602] [2024-06-27 18:45:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:14,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:15,897 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 18:45:15,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245105602] [2024-06-27 18:45:15,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245105602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:15,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:15,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:15,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678235662] [2024-06-27 18:45:15,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:15,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:15,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:15,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:15,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:15,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:15,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 112 transitions, 985 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:15,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:15,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:15,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:16,500 INFO L124 PetriNetUnfolderBase]: 765/1494 cut-off events. [2024-06-27 18:45:16,501 INFO L125 PetriNetUnfolderBase]: For 14827/14827 co-relation queries the response was YES. [2024-06-27 18:45:16,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 1494 events. 765/1494 cut-off events. For 14827/14827 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9302 event pairs, 131 based on Foata normal form. 1/1447 useless extension candidates. Maximal degree in co-relation 7451. Up to 924 conditions per place. [2024-06-27 18:45:16,509 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 107 selfloop transitions, 53 changer transitions 0/169 dead transitions. [2024-06-27 18:45:16,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 169 transitions, 1753 flow [2024-06-27 18:45:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-27 18:45:16,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48873873873873874 [2024-06-27 18:45:16,513 INFO L175 Difference]: Start difference. First operand has 111 places, 112 transitions, 985 flow. Second operand 12 states and 217 transitions. [2024-06-27 18:45:16,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 169 transitions, 1753 flow [2024-06-27 18:45:16,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 169 transitions, 1613 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:16,531 INFO L231 Difference]: Finished difference. Result has 121 places, 132 transitions, 1255 flow [2024-06-27 18:45:16,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1255, PETRI_PLACES=121, PETRI_TRANSITIONS=132} [2024-06-27 18:45:16,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-27 18:45:16,531 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 132 transitions, 1255 flow [2024-06-27 18:45:16,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:16,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:16,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:16,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:45:16,532 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:16,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:16,532 INFO L85 PathProgramCache]: Analyzing trace with hash -744944133, now seen corresponding path program 2 times [2024-06-27 18:45:16,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:16,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612145251] [2024-06-27 18:45:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:17,511 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 18:45:17,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612145251] [2024-06-27 18:45:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612145251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:17,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:17,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595961077] [2024-06-27 18:45:17,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:17,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:17,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:17,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:17,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:17,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:17,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 132 transitions, 1255 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:17,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:17,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:17,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:17,955 INFO L124 PetriNetUnfolderBase]: 808/1636 cut-off events. [2024-06-27 18:45:17,956 INFO L125 PetriNetUnfolderBase]: For 18225/18225 co-relation queries the response was YES. [2024-06-27 18:45:17,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8434 conditions, 1636 events. 808/1636 cut-off events. For 18225/18225 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10537 event pairs, 152 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 8378. Up to 763 conditions per place. [2024-06-27 18:45:17,966 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 91 selfloop transitions, 69 changer transitions 0/169 dead transitions. [2024-06-27 18:45:17,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 169 transitions, 1925 flow [2024-06-27 18:45:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-27 18:45:17,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543918918918919 [2024-06-27 18:45:17,967 INFO L175 Difference]: Start difference. First operand has 121 places, 132 transitions, 1255 flow. Second operand 8 states and 161 transitions. [2024-06-27 18:45:17,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 169 transitions, 1925 flow [2024-06-27 18:45:17,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 169 transitions, 1825 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:17,990 INFO L231 Difference]: Finished difference. Result has 127 places, 139 transitions, 1464 flow [2024-06-27 18:45:17,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1464, PETRI_PLACES=127, PETRI_TRANSITIONS=139} [2024-06-27 18:45:17,990 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-27 18:45:17,991 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 139 transitions, 1464 flow [2024-06-27 18:45:17,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:17,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:17,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:17,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:45:17,991 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:17,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash -744645603, now seen corresponding path program 3 times [2024-06-27 18:45:17,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:17,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709450787] [2024-06-27 18:45:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:17,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:19,115 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 18:45:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709450787] [2024-06-27 18:45:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709450787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:19,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941362383] [2024-06-27 18:45:19,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:19,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:19,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:19,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 139 transitions, 1464 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:19,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:19,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:19,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:19,652 INFO L124 PetriNetUnfolderBase]: 806/1595 cut-off events. [2024-06-27 18:45:19,652 INFO L125 PetriNetUnfolderBase]: For 20956/20956 co-relation queries the response was YES. [2024-06-27 18:45:19,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8839 conditions, 1595 events. 806/1595 cut-off events. For 20956/20956 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10182 event pairs, 191 based on Foata normal form. 1/1538 useless extension candidates. Maximal degree in co-relation 8780. Up to 1222 conditions per place. [2024-06-27 18:45:19,663 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 146 selfloop transitions, 19 changer transitions 0/174 dead transitions. [2024-06-27 18:45:19,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 174 transitions, 1944 flow [2024-06-27 18:45:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:45:19,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 18:45:19,665 INFO L175 Difference]: Start difference. First operand has 127 places, 139 transitions, 1464 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:45:19,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 174 transitions, 1944 flow [2024-06-27 18:45:19,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 174 transitions, 1853 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:45:19,697 INFO L231 Difference]: Finished difference. Result has 134 places, 139 transitions, 1417 flow [2024-06-27 18:45:19,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1417, PETRI_PLACES=134, PETRI_TRANSITIONS=139} [2024-06-27 18:45:19,698 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-27 18:45:19,698 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 139 transitions, 1417 flow [2024-06-27 18:45:19,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:19,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:19,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:45:19,699 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:19,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1002902260, now seen corresponding path program 1 times [2024-06-27 18:45:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:19,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023686459] [2024-06-27 18:45:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:19,781 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 18:45:19,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:19,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023686459] [2024-06-27 18:45:19,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023686459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:19,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:19,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:45:19,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481307248] [2024-06-27 18:45:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:19,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:45:19,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:45:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:45:19,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 18:45:19,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 139 transitions, 1417 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 18:45:19,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:19,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 18:45:19,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:20,095 INFO L124 PetriNetUnfolderBase]: 993/1961 cut-off events. [2024-06-27 18:45:20,095 INFO L125 PetriNetUnfolderBase]: For 24997/25074 co-relation queries the response was YES. [2024-06-27 18:45:20,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10850 conditions, 1961 events. 993/1961 cut-off events. For 24997/25074 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13338 event pairs, 146 based on Foata normal form. 42/1906 useless extension candidates. Maximal degree in co-relation 10790. Up to 641 conditions per place. [2024-06-27 18:45:20,109 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 92 selfloop transitions, 18 changer transitions 79/259 dead transitions. [2024-06-27 18:45:20,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 259 transitions, 3101 flow [2024-06-27 18:45:20,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:45:20,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013513513513513 [2024-06-27 18:45:20,111 INFO L175 Difference]: Start difference. First operand has 134 places, 139 transitions, 1417 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:45:20,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 259 transitions, 3101 flow [2024-06-27 18:45:20,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 259 transitions, 2992 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:20,151 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 1456 flow [2024-06-27 18:45:20,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1456, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2024-06-27 18:45:20,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-27 18:45:20,152 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 1456 flow [2024-06-27 18:45:20,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 18:45:20,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:20,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:45:20,153 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:20,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1203537216, now seen corresponding path program 1 times [2024-06-27 18:45:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:20,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051108679] [2024-06-27 18:45:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:20,713 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 18:45:20,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:20,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051108679] [2024-06-27 18:45:20,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051108679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:20,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:20,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:20,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870997313] [2024-06-27 18:45:20,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:20,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:20,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:20,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:20,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 1456 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:20,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:20,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:20,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:21,225 INFO L124 PetriNetUnfolderBase]: 817/1611 cut-off events. [2024-06-27 18:45:21,225 INFO L125 PetriNetUnfolderBase]: For 20492/20496 co-relation queries the response was YES. [2024-06-27 18:45:21,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9300 conditions, 1611 events. 817/1611 cut-off events. For 20492/20496 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10319 event pairs, 181 based on Foata normal form. 6/1605 useless extension candidates. Maximal degree in co-relation 9234. Up to 1249 conditions per place. [2024-06-27 18:45:21,236 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 135 selfloop transitions, 28 changer transitions 3/176 dead transitions. [2024-06-27 18:45:21,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 176 transitions, 1996 flow [2024-06-27 18:45:21,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:45:21,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:45:21,237 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 1456 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:45:21,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 176 transitions, 1996 flow [2024-06-27 18:45:21,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 176 transitions, 1992 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:45:21,265 INFO L231 Difference]: Finished difference. Result has 146 places, 151 transitions, 1661 flow [2024-06-27 18:45:21,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1661, PETRI_PLACES=146, PETRI_TRANSITIONS=151} [2024-06-27 18:45:21,266 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-27 18:45:21,266 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 151 transitions, 1661 flow [2024-06-27 18:45:21,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:21,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:21,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:21,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:45:21,267 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:21,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash -152982920, now seen corresponding path program 2 times [2024-06-27 18:45:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195417011] [2024-06-27 18:45:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:21,920 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 18:45:21,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:21,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195417011] [2024-06-27 18:45:21,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195417011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:21,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:21,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434398115] [2024-06-27 18:45:21,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:21,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:21,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:21,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:22,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:22,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 151 transitions, 1661 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:22,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:22,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:22,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:22,470 INFO L124 PetriNetUnfolderBase]: 797/1547 cut-off events. [2024-06-27 18:45:22,471 INFO L125 PetriNetUnfolderBase]: For 21227/21237 co-relation queries the response was YES. [2024-06-27 18:45:22,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9192 conditions, 1547 events. 797/1547 cut-off events. For 21227/21237 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9568 event pairs, 139 based on Foata normal form. 12/1552 useless extension candidates. Maximal degree in co-relation 9121. Up to 1198 conditions per place. [2024-06-27 18:45:22,482 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 142 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2024-06-27 18:45:22,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 181 transitions, 2239 flow [2024-06-27 18:45:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:45:22,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:45:22,484 INFO L175 Difference]: Start difference. First operand has 146 places, 151 transitions, 1661 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:45:22,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 181 transitions, 2239 flow [2024-06-27 18:45:22,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 181 transitions, 2154 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:22,518 INFO L231 Difference]: Finished difference. Result has 149 places, 157 transitions, 1779 flow [2024-06-27 18:45:22,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1779, PETRI_PLACES=149, PETRI_TRANSITIONS=157} [2024-06-27 18:45:22,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-27 18:45:22,519 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 157 transitions, 1779 flow [2024-06-27 18:45:22,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:22,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:22,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:22,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:45:22,520 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:22,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:22,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1327466052, now seen corresponding path program 3 times [2024-06-27 18:45:22,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049931064] [2024-06-27 18:45:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:22,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:23,148 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 18:45:23,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:23,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049931064] [2024-06-27 18:45:23,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049931064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:23,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:23,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:23,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135606522] [2024-06-27 18:45:23,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:23,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:23,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:23,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:23,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 157 transitions, 1779 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:23,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:23,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:23,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:23,616 INFO L124 PetriNetUnfolderBase]: 810/1578 cut-off events. [2024-06-27 18:45:23,616 INFO L125 PetriNetUnfolderBase]: For 22604/22612 co-relation queries the response was YES. [2024-06-27 18:45:23,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9289 conditions, 1578 events. 810/1578 cut-off events. For 22604/22612 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9804 event pairs, 181 based on Foata normal form. 10/1546 useless extension candidates. Maximal degree in co-relation 9218. Up to 1234 conditions per place. [2024-06-27 18:45:23,642 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 143 selfloop transitions, 30 changer transitions 0/183 dead transitions. [2024-06-27 18:45:23,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 183 transitions, 2245 flow [2024-06-27 18:45:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:45:23,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 18:45:23,643 INFO L175 Difference]: Start difference. First operand has 149 places, 157 transitions, 1779 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:45:23,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 183 transitions, 2245 flow [2024-06-27 18:45:23,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 183 transitions, 2156 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:23,679 INFO L231 Difference]: Finished difference. Result has 152 places, 158 transitions, 1777 flow [2024-06-27 18:45:23,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1777, PETRI_PLACES=152, PETRI_TRANSITIONS=158} [2024-06-27 18:45:23,679 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 18:45:23,680 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 158 transitions, 1777 flow [2024-06-27 18:45:23,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:23,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:23,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:23,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:45:23,680 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:23,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1010578786, now seen corresponding path program 1 times [2024-06-27 18:45:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:23,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212671052] [2024-06-27 18:45:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:24,460 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 18:45:24,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:24,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212671052] [2024-06-27 18:45:24,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212671052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:24,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:24,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:24,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920353254] [2024-06-27 18:45:24,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:24,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:24,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:24,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:24,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:24,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:24,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 158 transitions, 1777 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:24,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:24,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:24,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:25,065 INFO L124 PetriNetUnfolderBase]: 860/1677 cut-off events. [2024-06-27 18:45:25,066 INFO L125 PetriNetUnfolderBase]: For 25142/25148 co-relation queries the response was YES. [2024-06-27 18:45:25,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9896 conditions, 1677 events. 860/1677 cut-off events. For 25142/25148 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10546 event pairs, 132 based on Foata normal form. 7/1638 useless extension candidates. Maximal degree in co-relation 9824. Up to 1148 conditions per place. [2024-06-27 18:45:25,078 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 142 selfloop transitions, 45 changer transitions 0/197 dead transitions. [2024-06-27 18:45:25,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 197 transitions, 2539 flow [2024-06-27 18:45:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:45:25,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 18:45:25,079 INFO L175 Difference]: Start difference. First operand has 152 places, 158 transitions, 1777 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:45:25,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 197 transitions, 2539 flow [2024-06-27 18:45:25,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 197 transitions, 2466 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:25,117 INFO L231 Difference]: Finished difference. Result has 155 places, 165 transitions, 1941 flow [2024-06-27 18:45:25,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1941, PETRI_PLACES=155, PETRI_TRANSITIONS=165} [2024-06-27 18:45:25,118 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-27 18:45:25,118 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 165 transitions, 1941 flow [2024-06-27 18:45:25,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:25,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:25,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:25,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:45:25,119 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:25,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash -145358408, now seen corresponding path program 2 times [2024-06-27 18:45:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:25,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060318552] [2024-06-27 18:45:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:25,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:25,899 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 18:45:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:25,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060318552] [2024-06-27 18:45:25,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060318552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:25,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:25,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:25,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460746561] [2024-06-27 18:45:25,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:25,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:25,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:25,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:25,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:25,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:25,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 165 transitions, 1941 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:25,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:25,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:25,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:26,500 INFO L124 PetriNetUnfolderBase]: 858/1670 cut-off events. [2024-06-27 18:45:26,501 INFO L125 PetriNetUnfolderBase]: For 25896/25902 co-relation queries the response was YES. [2024-06-27 18:45:26,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10006 conditions, 1670 events. 858/1670 cut-off events. For 25896/25902 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10491 event pairs, 136 based on Foata normal form. 7/1634 useless extension candidates. Maximal degree in co-relation 9933. Up to 1199 conditions per place. [2024-06-27 18:45:26,513 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 146 selfloop transitions, 40 changer transitions 0/196 dead transitions. [2024-06-27 18:45:26,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 196 transitions, 2487 flow [2024-06-27 18:45:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:45:26,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-06-27 18:45:26,514 INFO L175 Difference]: Start difference. First operand has 155 places, 165 transitions, 1941 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:45:26,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 196 transitions, 2487 flow [2024-06-27 18:45:26,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 196 transitions, 2394 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:26,559 INFO L231 Difference]: Finished difference. Result has 160 places, 166 transitions, 1969 flow [2024-06-27 18:45:26,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1969, PETRI_PLACES=160, PETRI_TRANSITIONS=166} [2024-06-27 18:45:26,559 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-27 18:45:26,559 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 166 transitions, 1969 flow [2024-06-27 18:45:26,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:26,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:26,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:45:26,560 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:26,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1734249480, now seen corresponding path program 3 times [2024-06-27 18:45:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:26,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626483378] [2024-06-27 18:45:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:27,358 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 18:45:27,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:27,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626483378] [2024-06-27 18:45:27,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626483378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:27,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794984871] [2024-06-27 18:45:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:27,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:27,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:27,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 166 transitions, 1969 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:27,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:27,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:27,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:27,814 INFO L124 PetriNetUnfolderBase]: 860/1702 cut-off events. [2024-06-27 18:45:27,814 INFO L125 PetriNetUnfolderBase]: For 25533/25539 co-relation queries the response was YES. [2024-06-27 18:45:27,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10061 conditions, 1702 events. 860/1702 cut-off events. For 25533/25539 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10875 event pairs, 167 based on Foata normal form. 8/1661 useless extension candidates. Maximal degree in co-relation 9986. Up to 1269 conditions per place. [2024-06-27 18:45:27,827 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 150 selfloop transitions, 39 changer transitions 0/199 dead transitions. [2024-06-27 18:45:27,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 199 transitions, 2533 flow [2024-06-27 18:45:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:45:27,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-06-27 18:45:27,828 INFO L175 Difference]: Start difference. First operand has 160 places, 166 transitions, 1969 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:45:27,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 199 transitions, 2533 flow [2024-06-27 18:45:27,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 199 transitions, 2414 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:27,871 INFO L231 Difference]: Finished difference. Result has 162 places, 168 transitions, 1986 flow [2024-06-27 18:45:27,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1986, PETRI_PLACES=162, PETRI_TRANSITIONS=168} [2024-06-27 18:45:27,871 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-27 18:45:27,872 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 168 transitions, 1986 flow [2024-06-27 18:45:27,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:27,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:27,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:27,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:45:27,872 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:27,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1010301956, now seen corresponding path program 1 times [2024-06-27 18:45:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886410752] [2024-06-27 18:45:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:27,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:29,131 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 18:45:29,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:29,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886410752] [2024-06-27 18:45:29,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886410752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:29,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:29,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:29,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344061530] [2024-06-27 18:45:29,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:29,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:29,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:29,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:29,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 168 transitions, 1986 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:45:29,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:29,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:29,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:29,817 INFO L124 PetriNetUnfolderBase]: 928/1810 cut-off events. [2024-06-27 18:45:29,817 INFO L125 PetriNetUnfolderBase]: For 31382/31388 co-relation queries the response was YES. [2024-06-27 18:45:29,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10699 conditions, 1810 events. 928/1810 cut-off events. For 31382/31388 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11636 event pairs, 157 based on Foata normal form. 16/1778 useless extension candidates. Maximal degree in co-relation 10623. Up to 1111 conditions per place. [2024-06-27 18:45:29,831 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 142 selfloop transitions, 59 changer transitions 0/211 dead transitions. [2024-06-27 18:45:29,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 211 transitions, 2680 flow [2024-06-27 18:45:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:45:29,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216216216216216 [2024-06-27 18:45:29,832 INFO L175 Difference]: Start difference. First operand has 162 places, 168 transitions, 1986 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:45:29,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 211 transitions, 2680 flow [2024-06-27 18:45:29,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 211 transitions, 2544 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:29,875 INFO L231 Difference]: Finished difference. Result has 167 places, 172 transitions, 2082 flow [2024-06-27 18:45:29,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2082, PETRI_PLACES=167, PETRI_TRANSITIONS=172} [2024-06-27 18:45:29,876 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-27 18:45:29,876 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 172 transitions, 2082 flow [2024-06-27 18:45:29,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:45:29,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:29,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:29,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:45:29,877 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:29,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1874226628, now seen corresponding path program 4 times [2024-06-27 18:45:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317946529] [2024-06-27 18:45:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:30,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:30,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317946529] [2024-06-27 18:45:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317946529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:30,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:30,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:30,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567798175] [2024-06-27 18:45:30,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:30,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:30,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:30,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:30,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:30,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 172 transitions, 2082 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:30,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:30,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:30,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:30,863 INFO L124 PetriNetUnfolderBase]: 941/1758 cut-off events. [2024-06-27 18:45:30,864 INFO L125 PetriNetUnfolderBase]: For 29302/29317 co-relation queries the response was YES. [2024-06-27 18:45:30,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10931 conditions, 1758 events. 941/1758 cut-off events. For 29302/29317 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10921 event pairs, 172 based on Foata normal form. 17/1746 useless extension candidates. Maximal degree in co-relation 10852. Up to 1410 conditions per place. [2024-06-27 18:45:30,875 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 147 selfloop transitions, 41 changer transitions 0/198 dead transitions. [2024-06-27 18:45:30,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 198 transitions, 2650 flow [2024-06-27 18:45:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:45:30,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:45:30,877 INFO L175 Difference]: Start difference. First operand has 167 places, 172 transitions, 2082 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:45:30,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 198 transitions, 2650 flow [2024-06-27 18:45:30,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 198 transitions, 2498 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:30,927 INFO L231 Difference]: Finished difference. Result has 170 places, 176 transitions, 2111 flow [2024-06-27 18:45:30,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2111, PETRI_PLACES=170, PETRI_TRANSITIONS=176} [2024-06-27 18:45:30,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-27 18:45:30,928 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 176 transitions, 2111 flow [2024-06-27 18:45:30,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:30,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:30,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:30,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:45:30,929 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:30,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1866602116, now seen corresponding path program 4 times [2024-06-27 18:45:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:30,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942866586] [2024-06-27 18:45:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:30,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:31,726 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 18:45:31,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:31,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942866586] [2024-06-27 18:45:31,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942866586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:31,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:31,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:31,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945761720] [2024-06-27 18:45:31,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:31,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:31,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:31,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:31,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:31,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:31,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 176 transitions, 2111 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:31,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:31,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:31,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:32,309 INFO L124 PetriNetUnfolderBase]: 965/1811 cut-off events. [2024-06-27 18:45:32,309 INFO L125 PetriNetUnfolderBase]: For 31678/31692 co-relation queries the response was YES. [2024-06-27 18:45:32,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11251 conditions, 1811 events. 965/1811 cut-off events. For 31678/31692 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11417 event pairs, 140 based on Foata normal form. 15/1798 useless extension candidates. Maximal degree in co-relation 11170. Up to 1358 conditions per place. [2024-06-27 18:45:32,324 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 146 selfloop transitions, 53 changer transitions 0/209 dead transitions. [2024-06-27 18:45:32,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 209 transitions, 2815 flow [2024-06-27 18:45:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:45:32,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:45:32,325 INFO L175 Difference]: Start difference. First operand has 170 places, 176 transitions, 2111 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:45:32,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 209 transitions, 2815 flow [2024-06-27 18:45:32,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 209 transitions, 2695 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:32,378 INFO L231 Difference]: Finished difference. Result has 174 places, 180 transitions, 2206 flow [2024-06-27 18:45:32,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2206, PETRI_PLACES=174, PETRI_TRANSITIONS=180} [2024-06-27 18:45:32,378 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 133 predicate places. [2024-06-27 18:45:32,378 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 180 transitions, 2206 flow [2024-06-27 18:45:32,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:32,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:32,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:32,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:45:32,379 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:32,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:32,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1866869026, now seen corresponding path program 5 times [2024-06-27 18:45:32,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:32,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944890552] [2024-06-27 18:45:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:32,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:33,136 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 18:45:33,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:33,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944890552] [2024-06-27 18:45:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944890552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:33,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389822367] [2024-06-27 18:45:33,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:33,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:33,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 180 transitions, 2206 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:33,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:33,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:33,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:33,692 INFO L124 PetriNetUnfolderBase]: 989/1839 cut-off events. [2024-06-27 18:45:33,692 INFO L125 PetriNetUnfolderBase]: For 33896/33910 co-relation queries the response was YES. [2024-06-27 18:45:33,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11661 conditions, 1839 events. 989/1839 cut-off events. For 33896/33910 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11536 event pairs, 143 based on Foata normal form. 15/1829 useless extension candidates. Maximal degree in co-relation 11579. Up to 1344 conditions per place. [2024-06-27 18:45:33,708 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 145 selfloop transitions, 59 changer transitions 0/214 dead transitions. [2024-06-27 18:45:33,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 214 transitions, 2994 flow [2024-06-27 18:45:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:45:33,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 18:45:33,712 INFO L175 Difference]: Start difference. First operand has 174 places, 180 transitions, 2206 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:45:33,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 214 transitions, 2994 flow [2024-06-27 18:45:33,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 214 transitions, 2843 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:33,799 INFO L231 Difference]: Finished difference. Result has 178 places, 184 transitions, 2287 flow [2024-06-27 18:45:33,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2287, PETRI_PLACES=178, PETRI_TRANSITIONS=184} [2024-06-27 18:45:33,800 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-27 18:45:33,801 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 184 transitions, 2287 flow [2024-06-27 18:45:33,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:33,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:33,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:33,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:45:33,801 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:33,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1609503438, now seen corresponding path program 6 times [2024-06-27 18:45:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:33,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389991920] [2024-06-27 18:45:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:34,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:34,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389991920] [2024-06-27 18:45:34,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389991920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:34,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:34,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765285105] [2024-06-27 18:45:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:34,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:34,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:34,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:34,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 184 transitions, 2287 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:34,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:34,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:35,412 INFO L124 PetriNetUnfolderBase]: 1024/1973 cut-off events. [2024-06-27 18:45:35,413 INFO L125 PetriNetUnfolderBase]: For 39249/39259 co-relation queries the response was YES. [2024-06-27 18:45:35,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12490 conditions, 1973 events. 1024/1973 cut-off events. For 39249/39259 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12763 event pairs, 213 based on Foata normal form. 12/1943 useless extension candidates. Maximal degree in co-relation 12406. Up to 1568 conditions per place. [2024-06-27 18:45:35,428 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 186 selfloop transitions, 23 changer transitions 0/219 dead transitions. [2024-06-27 18:45:35,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 219 transitions, 3047 flow [2024-06-27 18:45:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:45:35,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-06-27 18:45:35,429 INFO L175 Difference]: Start difference. First operand has 178 places, 184 transitions, 2287 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:45:35,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 219 transitions, 3047 flow [2024-06-27 18:45:35,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 219 transitions, 2968 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:35,495 INFO L231 Difference]: Finished difference. Result has 183 places, 189 transitions, 2395 flow [2024-06-27 18:45:35,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=183, PETRI_TRANSITIONS=189} [2024-06-27 18:45:35,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-27 18:45:35,496 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 189 transitions, 2395 flow [2024-06-27 18:45:35,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:35,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:35,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:35,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:45:35,497 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:35,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:35,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1618440738, now seen corresponding path program 7 times [2024-06-27 18:45:35,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:35,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201798003] [2024-06-27 18:45:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:35,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:36,359 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 18:45:36,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:36,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201798003] [2024-06-27 18:45:36,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201798003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:36,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:36,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:36,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444612321] [2024-06-27 18:45:36,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:36,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:36,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:36,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:36,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:36,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:36,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 189 transitions, 2395 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:36,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:36,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:36,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:37,015 INFO L124 PetriNetUnfolderBase]: 1038/1977 cut-off events. [2024-06-27 18:45:37,015 INFO L125 PetriNetUnfolderBase]: For 40261/40271 co-relation queries the response was YES. [2024-06-27 18:45:37,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12870 conditions, 1977 events. 1038/1977 cut-off events. For 40261/40271 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12591 event pairs, 165 based on Foata normal form. 11/1949 useless extension candidates. Maximal degree in co-relation 12784. Up to 1245 conditions per place. [2024-06-27 18:45:37,030 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 144 selfloop transitions, 70 changer transitions 0/224 dead transitions. [2024-06-27 18:45:37,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 224 transitions, 3200 flow [2024-06-27 18:45:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:45:37,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 18:45:37,031 INFO L175 Difference]: Start difference. First operand has 183 places, 189 transitions, 2395 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:45:37,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 224 transitions, 3200 flow [2024-06-27 18:45:37,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 224 transitions, 3058 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:37,110 INFO L231 Difference]: Finished difference. Result has 188 places, 194 transitions, 2575 flow [2024-06-27 18:45:37,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2575, PETRI_PLACES=188, PETRI_TRANSITIONS=194} [2024-06-27 18:45:37,111 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-27 18:45:37,111 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 194 transitions, 2575 flow [2024-06-27 18:45:37,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:37,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:37,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:37,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:45:37,112 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:37,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1618707648, now seen corresponding path program 8 times [2024-06-27 18:45:37,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:37,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571395628] [2024-06-27 18:45:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:37,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:38,052 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 18:45:38,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571395628] [2024-06-27 18:45:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571395628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:38,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187813398] [2024-06-27 18:45:38,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:38,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:38,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:38,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 194 transitions, 2575 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:38,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:38,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:38,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:38,688 INFO L124 PetriNetUnfolderBase]: 1036/1936 cut-off events. [2024-06-27 18:45:38,689 INFO L125 PetriNetUnfolderBase]: For 39672/39682 co-relation queries the response was YES. [2024-06-27 18:45:38,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12818 conditions, 1936 events. 1036/1936 cut-off events. For 39672/39682 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12281 event pairs, 115 based on Foata normal form. 11/1922 useless extension candidates. Maximal degree in co-relation 12729. Up to 1243 conditions per place. [2024-06-27 18:45:38,705 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 142 selfloop transitions, 71 changer transitions 0/223 dead transitions. [2024-06-27 18:45:38,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 223 transitions, 3143 flow [2024-06-27 18:45:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:45:38,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-06-27 18:45:38,706 INFO L175 Difference]: Start difference. First operand has 188 places, 194 transitions, 2575 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:45:38,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 223 transitions, 3143 flow [2024-06-27 18:45:38,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 223 transitions, 2950 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:38,790 INFO L231 Difference]: Finished difference. Result has 193 places, 194 transitions, 2529 flow [2024-06-27 18:45:38,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2529, PETRI_PLACES=193, PETRI_TRANSITIONS=194} [2024-06-27 18:45:38,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-27 18:45:38,791 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 194 transitions, 2529 flow [2024-06-27 18:45:38,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:38,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:38,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:45:38,792 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:38,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:38,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1866592196, now seen corresponding path program 2 times [2024-06-27 18:45:38,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:38,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440851474] [2024-06-27 18:45:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:38,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:39,589 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 18:45:39,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:39,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440851474] [2024-06-27 18:45:39,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440851474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:39,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:39,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:39,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219835731] [2024-06-27 18:45:39,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:39,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:39,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:39,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:39,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:39,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:39,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 194 transitions, 2529 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:45:39,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:39,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:39,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:40,316 INFO L124 PetriNetUnfolderBase]: 1120/2112 cut-off events. [2024-06-27 18:45:40,316 INFO L125 PetriNetUnfolderBase]: For 49257/49271 co-relation queries the response was YES. [2024-06-27 18:45:40,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13823 conditions, 2112 events. 1120/2112 cut-off events. For 49257/49271 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13722 event pairs, 161 based on Foata normal form. 26/2109 useless extension candidates. Maximal degree in co-relation 13732. Up to 1479 conditions per place. [2024-06-27 18:45:40,336 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 168 selfloop transitions, 50 changer transitions 0/228 dead transitions. [2024-06-27 18:45:40,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 228 transitions, 3221 flow [2024-06-27 18:45:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:45:40,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 18:45:40,338 INFO L175 Difference]: Start difference. First operand has 193 places, 194 transitions, 2529 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:45:40,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 228 transitions, 3221 flow [2024-06-27 18:45:40,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 228 transitions, 3083 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:40,435 INFO L231 Difference]: Finished difference. Result has 195 places, 195 transitions, 2529 flow [2024-06-27 18:45:40,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2529, PETRI_PLACES=195, PETRI_TRANSITIONS=195} [2024-06-27 18:45:40,436 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2024-06-27 18:45:40,436 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 195 transitions, 2529 flow [2024-06-27 18:45:40,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:45:40,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:40,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:40,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:45:40,437 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:40,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:40,437 INFO L85 PathProgramCache]: Analyzing trace with hash 322888762, now seen corresponding path program 3 times [2024-06-27 18:45:40,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:40,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428552251] [2024-06-27 18:45:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:40,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:41,147 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 18:45:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:41,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428552251] [2024-06-27 18:45:41,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428552251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:41,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:41,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:41,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689116616] [2024-06-27 18:45:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:41,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:41,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:41,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:41,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:41,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 195 transitions, 2529 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:45:41,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:41,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:41,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:41,762 INFO L124 PetriNetUnfolderBase]: 1155/2213 cut-off events. [2024-06-27 18:45:41,762 INFO L125 PetriNetUnfolderBase]: For 49172/49182 co-relation queries the response was YES. [2024-06-27 18:45:41,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14459 conditions, 2213 events. 1155/2213 cut-off events. For 49172/49182 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14711 event pairs, 236 based on Foata normal form. 12/2187 useless extension candidates. Maximal degree in co-relation 14367. Up to 1763 conditions per place. [2024-06-27 18:45:41,782 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 203 selfloop transitions, 21 changer transitions 0/234 dead transitions. [2024-06-27 18:45:41,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 234 transitions, 3293 flow [2024-06-27 18:45:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:45:41,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-27 18:45:41,785 INFO L175 Difference]: Start difference. First operand has 195 places, 195 transitions, 2529 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:45:41,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 234 transitions, 3293 flow [2024-06-27 18:45:41,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 234 transitions, 3181 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:41,887 INFO L231 Difference]: Finished difference. Result has 198 places, 197 transitions, 2529 flow [2024-06-27 18:45:41,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2529, PETRI_PLACES=198, PETRI_TRANSITIONS=197} [2024-06-27 18:45:41,889 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-27 18:45:41,889 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 197 transitions, 2529 flow [2024-06-27 18:45:41,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:45:41,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:41,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:41,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:45:41,890 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:41,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1618430818, now seen corresponding path program 4 times [2024-06-27 18:45:41,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:41,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890415411] [2024-06-27 18:45:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:41,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:42,861 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 18:45:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:42,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890415411] [2024-06-27 18:45:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890415411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:42,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538601595] [2024-06-27 18:45:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:42,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:42,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:42,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:42,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 197 transitions, 2529 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:45:42,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:42,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:42,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:43,529 INFO L124 PetriNetUnfolderBase]: 1156/2190 cut-off events. [2024-06-27 18:45:43,530 INFO L125 PetriNetUnfolderBase]: For 47481/47493 co-relation queries the response was YES. [2024-06-27 18:45:43,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14258 conditions, 2190 events. 1156/2190 cut-off events. For 47481/47493 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14320 event pairs, 169 based on Foata normal form. 14/2164 useless extension candidates. Maximal degree in co-relation 14165. Up to 1394 conditions per place. [2024-06-27 18:45:43,549 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 135 selfloop transitions, 83 changer transitions 0/228 dead transitions. [2024-06-27 18:45:43,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 228 transitions, 3143 flow [2024-06-27 18:45:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:45:43,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285285285285285 [2024-06-27 18:45:43,551 INFO L175 Difference]: Start difference. First operand has 198 places, 197 transitions, 2529 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:45:43,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 228 transitions, 3143 flow [2024-06-27 18:45:43,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 228 transitions, 3078 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:43,658 INFO L231 Difference]: Finished difference. Result has 201 places, 198 transitions, 2670 flow [2024-06-27 18:45:43,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2464, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2670, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2024-06-27 18:45:43,658 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-27 18:45:43,659 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 2670 flow [2024-06-27 18:45:43,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:45:43,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:43,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:43,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:45:43,659 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:43,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash 311460922, now seen corresponding path program 5 times [2024-06-27 18:45:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:43,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368546526] [2024-06-27 18:45:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:43,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:44,749 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 18:45:44,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:44,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368546526] [2024-06-27 18:45:44,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368546526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:44,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:44,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:44,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429045911] [2024-06-27 18:45:44,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:44,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:44,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:44,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:44,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:44,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 2670 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:45:44,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:44,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:44,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:45,467 INFO L124 PetriNetUnfolderBase]: 1153/2221 cut-off events. [2024-06-27 18:45:45,467 INFO L125 PetriNetUnfolderBase]: For 46726/46736 co-relation queries the response was YES. [2024-06-27 18:45:45,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14357 conditions, 2221 events. 1153/2221 cut-off events. For 46726/46736 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14803 event pairs, 240 based on Foata normal form. 12/2195 useless extension candidates. Maximal degree in co-relation 14262. Up to 1814 conditions per place. [2024-06-27 18:45:45,486 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 199 selfloop transitions, 19 changer transitions 0/228 dead transitions. [2024-06-27 18:45:45,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 228 transitions, 3252 flow [2024-06-27 18:45:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:45,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:45:45,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:45:45,488 INFO L175 Difference]: Start difference. First operand has 201 places, 198 transitions, 2670 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:45:45,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 228 transitions, 3252 flow [2024-06-27 18:45:45,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 228 transitions, 3036 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:45,588 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 2496 flow [2024-06-27 18:45:45,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2496, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2024-06-27 18:45:45,588 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-27 18:45:45,588 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 2496 flow [2024-06-27 18:45:45,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:45:45,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:45,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:45,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:45:45,589 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:45,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash 267080610, now seen corresponding path program 5 times [2024-06-27 18:45:45,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:45,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840976293] [2024-06-27 18:45:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:45,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:46,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:46,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840976293] [2024-06-27 18:45:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840976293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:46,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:46,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:46,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123363876] [2024-06-27 18:45:46,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:46,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:46,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:46,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:46,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 2496 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:46,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:46,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:46,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:46,623 INFO L124 PetriNetUnfolderBase]: 1205/2328 cut-off events. [2024-06-27 18:45:46,624 INFO L125 PetriNetUnfolderBase]: For 44821/44827 co-relation queries the response was YES. [2024-06-27 18:45:46,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14296 conditions, 2328 events. 1205/2328 cut-off events. For 44821/44827 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15769 event pairs, 299 based on Foata normal form. 8/2285 useless extension candidates. Maximal degree in co-relation 14200. Up to 1912 conditions per place. [2024-06-27 18:45:46,643 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 199 selfloop transitions, 30 changer transitions 0/239 dead transitions. [2024-06-27 18:45:46,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 239 transitions, 3209 flow [2024-06-27 18:45:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:45:46,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:45:46,645 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 2496 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:45:46,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 239 transitions, 3209 flow [2024-06-27 18:45:46,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 239 transitions, 3169 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:46,744 INFO L231 Difference]: Finished difference. Result has 207 places, 212 transitions, 2731 flow [2024-06-27 18:45:46,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2731, PETRI_PLACES=207, PETRI_TRANSITIONS=212} [2024-06-27 18:45:46,745 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-27 18:45:46,745 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 212 transitions, 2731 flow [2024-06-27 18:45:46,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:46,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:46,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:46,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:45:46,748 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:46,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1241381440, now seen corresponding path program 6 times [2024-06-27 18:45:46,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:46,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906356593] [2024-06-27 18:45:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:46,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:47,244 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 18:45:47,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:47,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906356593] [2024-06-27 18:45:47,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906356593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:47,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:47,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:47,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604834491] [2024-06-27 18:45:47,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:47,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:47,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:47,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 212 transitions, 2731 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:47,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:47,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:47,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:47,867 INFO L124 PetriNetUnfolderBase]: 1261/2438 cut-off events. [2024-06-27 18:45:47,867 INFO L125 PetriNetUnfolderBase]: For 48373/48379 co-relation queries the response was YES. [2024-06-27 18:45:47,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15170 conditions, 2438 events. 1261/2438 cut-off events. For 48373/48379 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16773 event pairs, 300 based on Foata normal form. 8/2395 useless extension candidates. Maximal degree in co-relation 15070. Up to 1974 conditions per place. [2024-06-27 18:45:47,888 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 196 selfloop transitions, 47 changer transitions 0/253 dead transitions. [2024-06-27 18:45:47,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 253 transitions, 3495 flow [2024-06-27 18:45:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:45:47,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 18:45:47,889 INFO L175 Difference]: Start difference. First operand has 207 places, 212 transitions, 2731 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:45:47,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 253 transitions, 3495 flow [2024-06-27 18:45:47,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 253 transitions, 3405 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:47,996 INFO L231 Difference]: Finished difference. Result has 214 places, 225 transitions, 2969 flow [2024-06-27 18:45:47,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2669, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2969, PETRI_PLACES=214, PETRI_TRANSITIONS=225} [2024-06-27 18:45:47,996 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-27 18:45:47,997 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 225 transitions, 2969 flow [2024-06-27 18:45:47,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:47,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:47,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:47,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:45:47,997 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:47,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:47,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2099764646, now seen corresponding path program 7 times [2024-06-27 18:45:47,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300185498] [2024-06-27 18:45:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:48,475 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 18:45:48,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:48,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300185498] [2024-06-27 18:45:48,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300185498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:48,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:48,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:48,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989646651] [2024-06-27 18:45:48,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:48,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:48,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:48,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 225 transitions, 2969 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:48,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:48,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:48,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:49,192 INFO L124 PetriNetUnfolderBase]: 1300/2522 cut-off events. [2024-06-27 18:45:49,193 INFO L125 PetriNetUnfolderBase]: For 49606/49618 co-relation queries the response was YES. [2024-06-27 18:45:49,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15839 conditions, 2522 events. 1300/2522 cut-off events. For 49606/49618 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17425 event pairs, 270 based on Foata normal form. 14/2485 useless extension candidates. Maximal degree in co-relation 15736. Up to 1932 conditions per place. [2024-06-27 18:45:49,217 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 201 selfloop transitions, 58 changer transitions 0/269 dead transitions. [2024-06-27 18:45:49,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 269 transitions, 3806 flow [2024-06-27 18:45:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:45:49,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:45:49,218 INFO L175 Difference]: Start difference. First operand has 214 places, 225 transitions, 2969 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:45:49,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 269 transitions, 3806 flow [2024-06-27 18:45:49,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 269 transitions, 3646 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:49,356 INFO L231 Difference]: Finished difference. Result has 220 places, 241 transitions, 3209 flow [2024-06-27 18:45:49,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3209, PETRI_PLACES=220, PETRI_TRANSITIONS=241} [2024-06-27 18:45:49,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-27 18:45:49,357 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 241 transitions, 3209 flow [2024-06-27 18:45:49,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:45:49,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:49,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:49,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:45:49,357 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:49,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1491078594, now seen corresponding path program 1 times [2024-06-27 18:45:49,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:49,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997684807] [2024-06-27 18:45:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:49,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:50,559 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 18:45:50,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:50,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997684807] [2024-06-27 18:45:50,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997684807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:50,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:50,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:50,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415312065] [2024-06-27 18:45:50,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:50,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:50,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:50,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:50,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:50,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 241 transitions, 3209 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:50,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:50,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:50,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:51,273 INFO L124 PetriNetUnfolderBase]: 1333/2605 cut-off events. [2024-06-27 18:45:51,273 INFO L125 PetriNetUnfolderBase]: For 51876/51888 co-relation queries the response was YES. [2024-06-27 18:45:51,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16627 conditions, 2605 events. 1333/2605 cut-off events. For 51876/51888 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18312 event pairs, 346 based on Foata normal form. 14/2561 useless extension candidates. Maximal degree in co-relation 16521. Up to 2127 conditions per place. [2024-06-27 18:45:51,300 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 234 selfloop transitions, 32 changer transitions 0/276 dead transitions. [2024-06-27 18:45:51,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 276 transitions, 4041 flow [2024-06-27 18:45:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 18:45:51,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 18:45:51,302 INFO L175 Difference]: Start difference. First operand has 220 places, 241 transitions, 3209 flow. Second operand 10 states and 178 transitions. [2024-06-27 18:45:51,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 276 transitions, 4041 flow [2024-06-27 18:45:51,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 276 transitions, 3961 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:51,449 INFO L231 Difference]: Finished difference. Result has 228 places, 249 transitions, 3372 flow [2024-06-27 18:45:51,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3372, PETRI_PLACES=228, PETRI_TRANSITIONS=249} [2024-06-27 18:45:51,450 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-27 18:45:51,450 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 249 transitions, 3372 flow [2024-06-27 18:45:51,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:51,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:51,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:51,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:45:51,451 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:51,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:51,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1491256224, now seen corresponding path program 2 times [2024-06-27 18:45:51,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:51,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327142663] [2024-06-27 18:45:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:52,288 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 18:45:52,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327142663] [2024-06-27 18:45:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327142663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:52,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:52,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138559734] [2024-06-27 18:45:52,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:52,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:52,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:52,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 249 transitions, 3372 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:52,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:52,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:52,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:53,026 INFO L124 PetriNetUnfolderBase]: 1349/2621 cut-off events. [2024-06-27 18:45:53,026 INFO L125 PetriNetUnfolderBase]: For 52867/52883 co-relation queries the response was YES. [2024-06-27 18:45:53,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16924 conditions, 2621 events. 1349/2621 cut-off events. For 52867/52883 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18393 event pairs, 322 based on Foata normal form. 18/2585 useless extension candidates. Maximal degree in co-relation 16814. Up to 2061 conditions per place. [2024-06-27 18:45:53,049 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 216 selfloop transitions, 54 changer transitions 0/280 dead transitions. [2024-06-27 18:45:53,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 280 transitions, 4112 flow [2024-06-27 18:45:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:45:53,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:45:53,051 INFO L175 Difference]: Start difference. First operand has 228 places, 249 transitions, 3372 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:45:53,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 280 transitions, 4112 flow [2024-06-27 18:45:53,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 280 transitions, 4043 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:53,192 INFO L231 Difference]: Finished difference. Result has 231 places, 250 transitions, 3435 flow [2024-06-27 18:45:53,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3435, PETRI_PLACES=231, PETRI_TRANSITIONS=250} [2024-06-27 18:45:53,193 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 18:45:53,193 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 250 transitions, 3435 flow [2024-06-27 18:45:53,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:53,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:53,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:53,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:45:53,194 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:53,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:53,194 INFO L85 PathProgramCache]: Analyzing trace with hash -911376984, now seen corresponding path program 3 times [2024-06-27 18:45:53,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:53,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028020373] [2024-06-27 18:45:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:53,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:53,921 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 18:45:53,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:53,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028020373] [2024-06-27 18:45:53,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028020373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:53,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:53,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:53,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520305677] [2024-06-27 18:45:53,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:53,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:53,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:53,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:53,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 250 transitions, 3435 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:53,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:53,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:53,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:54,656 INFO L124 PetriNetUnfolderBase]: 1365/2670 cut-off events. [2024-06-27 18:45:54,656 INFO L125 PetriNetUnfolderBase]: For 54446/54455 co-relation queries the response was YES. [2024-06-27 18:45:54,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17216 conditions, 2670 events. 1365/2670 cut-off events. For 54446/54455 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18906 event pairs, 355 based on Foata normal form. 11/2623 useless extension candidates. Maximal degree in co-relation 17106. Up to 2104 conditions per place. [2024-06-27 18:45:54,682 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 228 selfloop transitions, 43 changer transitions 0/281 dead transitions. [2024-06-27 18:45:54,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 281 transitions, 4177 flow [2024-06-27 18:45:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:45:54,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 18:45:54,684 INFO L175 Difference]: Start difference. First operand has 231 places, 250 transitions, 3435 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:45:54,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 281 transitions, 4177 flow [2024-06-27 18:45:54,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 281 transitions, 4055 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:54,834 INFO L231 Difference]: Finished difference. Result has 233 places, 251 transitions, 3425 flow [2024-06-27 18:45:54,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3425, PETRI_PLACES=233, PETRI_TRANSITIONS=251} [2024-06-27 18:45:54,834 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-27 18:45:54,834 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 251 transitions, 3425 flow [2024-06-27 18:45:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:54,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:54,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:54,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:45:54,835 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:54,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1798226080, now seen corresponding path program 4 times [2024-06-27 18:45:54,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578903141] [2024-06-27 18:45:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:54,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:55,582 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 18:45:55,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578903141] [2024-06-27 18:45:55,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578903141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:55,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:55,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:55,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915584584] [2024-06-27 18:45:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:55,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:55,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:55,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 251 transitions, 3425 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:55,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:55,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:55,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:56,321 INFO L124 PetriNetUnfolderBase]: 1381/2688 cut-off events. [2024-06-27 18:45:56,322 INFO L125 PetriNetUnfolderBase]: For 56316/56327 co-relation queries the response was YES. [2024-06-27 18:45:56,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17351 conditions, 2688 events. 1381/2688 cut-off events. For 56316/56327 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18980 event pairs, 355 based on Foata normal form. 13/2645 useless extension candidates. Maximal degree in co-relation 17240. Up to 2183 conditions per place. [2024-06-27 18:45:56,348 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 231 selfloop transitions, 41 changer transitions 0/282 dead transitions. [2024-06-27 18:45:56,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 282 transitions, 4155 flow [2024-06-27 18:45:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:45:56,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 18:45:56,350 INFO L175 Difference]: Start difference. First operand has 233 places, 251 transitions, 3425 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:45:56,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 282 transitions, 4155 flow [2024-06-27 18:45:56,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 282 transitions, 4053 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:56,501 INFO L231 Difference]: Finished difference. Result has 235 places, 252 transitions, 3433 flow [2024-06-27 18:45:56,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3323, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3433, PETRI_PLACES=235, PETRI_TRANSITIONS=252} [2024-06-27 18:45:56,501 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-27 18:45:56,501 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 252 transitions, 3433 flow [2024-06-27 18:45:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:56,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:56,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:56,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:45:56,502 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:56,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1452809854, now seen corresponding path program 5 times [2024-06-27 18:45:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:56,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694594551] [2024-06-27 18:45:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:57,341 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 18:45:57,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:57,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694594551] [2024-06-27 18:45:57,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694594551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:57,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:57,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:57,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451952996] [2024-06-27 18:45:57,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:57,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:57,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:57,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:57,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 252 transitions, 3433 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:57,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:57,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:57,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:58,116 INFO L124 PetriNetUnfolderBase]: 1397/2733 cut-off events. [2024-06-27 18:45:58,116 INFO L125 PetriNetUnfolderBase]: For 57125/57134 co-relation queries the response was YES. [2024-06-27 18:45:58,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17494 conditions, 2733 events. 1397/2733 cut-off events. For 57125/57134 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19449 event pairs, 365 based on Foata normal form. 11/2684 useless extension candidates. Maximal degree in co-relation 17382. Up to 2194 conditions per place. [2024-06-27 18:45:58,144 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 227 selfloop transitions, 46 changer transitions 0/283 dead transitions. [2024-06-27 18:45:58,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 283 transitions, 4169 flow [2024-06-27 18:45:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:45:58,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 18:45:58,146 INFO L175 Difference]: Start difference. First operand has 235 places, 252 transitions, 3433 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:45:58,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 283 transitions, 4169 flow [2024-06-27 18:45:58,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 283 transitions, 4069 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:58,324 INFO L231 Difference]: Finished difference. Result has 237 places, 253 transitions, 3457 flow [2024-06-27 18:45:58,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3457, PETRI_PLACES=237, PETRI_TRANSITIONS=253} [2024-06-27 18:45:58,325 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-27 18:45:58,326 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 253 transitions, 3457 flow [2024-06-27 18:45:58,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:58,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:58,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:58,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:45:58,331 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:58,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:58,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1542475804, now seen corresponding path program 6 times [2024-06-27 18:45:58,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:58,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201150908] [2024-06-27 18:45:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:58,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:59,227 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 18:45:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201150908] [2024-06-27 18:45:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201150908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791836226] [2024-06-27 18:45:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:59,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:45:59,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 253 transitions, 3457 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:45:59,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:59,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:45:59,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:59,933 INFO L124 PetriNetUnfolderBase]: 1413/2757 cut-off events. [2024-06-27 18:45:59,934 INFO L125 PetriNetUnfolderBase]: For 58727/58736 co-relation queries the response was YES. [2024-06-27 18:45:59,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17674 conditions, 2757 events. 1413/2757 cut-off events. For 58727/58736 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 19583 event pairs, 348 based on Foata normal form. 11/2704 useless extension candidates. Maximal degree in co-relation 17561. Up to 2182 conditions per place. [2024-06-27 18:45:59,961 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 223 selfloop transitions, 48 changer transitions 0/281 dead transitions. [2024-06-27 18:45:59,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 281 transitions, 4151 flow [2024-06-27 18:45:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:59,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:59,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:45:59,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:45:59,962 INFO L175 Difference]: Start difference. First operand has 237 places, 253 transitions, 3457 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:45:59,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 281 transitions, 4151 flow [2024-06-27 18:46:00,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 281 transitions, 4041 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:00,134 INFO L231 Difference]: Finished difference. Result has 240 places, 254 transitions, 3478 flow [2024-06-27 18:46:00,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3478, PETRI_PLACES=240, PETRI_TRANSITIONS=254} [2024-06-27 18:46:00,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-27 18:46:00,135 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 254 transitions, 3478 flow [2024-06-27 18:46:00,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:00,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:00,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:00,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:46:00,135 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:00,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash -219416768, now seen corresponding path program 1 times [2024-06-27 18:46:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:00,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364933599] [2024-06-27 18:46:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:00,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:01,472 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 18:46:01,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:01,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364933599] [2024-06-27 18:46:01,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364933599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:01,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:01,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804429969] [2024-06-27 18:46:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:01,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:01,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:01,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 254 transitions, 3478 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:01,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:01,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:01,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:02,535 INFO L124 PetriNetUnfolderBase]: 1491/2932 cut-off events. [2024-06-27 18:46:02,536 INFO L125 PetriNetUnfolderBase]: For 59938/59948 co-relation queries the response was YES. [2024-06-27 18:46:02,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18583 conditions, 2932 events. 1491/2932 cut-off events. For 59938/59948 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 21192 event pairs, 370 based on Foata normal form. 11/2869 useless extension candidates. Maximal degree in co-relation 18469. Up to 2312 conditions per place. [2024-06-27 18:46:02,566 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 251 selfloop transitions, 45 changer transitions 0/306 dead transitions. [2024-06-27 18:46:02,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 306 transitions, 4535 flow [2024-06-27 18:46:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:46:02,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:46:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 232 transitions. [2024-06-27 18:46:02,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48232848232848236 [2024-06-27 18:46:02,568 INFO L175 Difference]: Start difference. First operand has 240 places, 254 transitions, 3478 flow. Second operand 13 states and 232 transitions. [2024-06-27 18:46:02,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 306 transitions, 4535 flow [2024-06-27 18:46:02,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 306 transitions, 4420 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:02,766 INFO L231 Difference]: Finished difference. Result has 250 places, 270 transitions, 3736 flow [2024-06-27 18:46:02,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3363, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3736, PETRI_PLACES=250, PETRI_TRANSITIONS=270} [2024-06-27 18:46:02,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-27 18:46:02,766 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 270 transitions, 3736 flow [2024-06-27 18:46:02,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:02,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:02,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:02,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:46:02,767 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:02,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash -210845888, now seen corresponding path program 2 times [2024-06-27 18:46:02,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:02,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687571398] [2024-06-27 18:46:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:02,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:03,662 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 18:46:03,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:03,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687571398] [2024-06-27 18:46:03,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687571398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:03,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:03,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:03,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297722731] [2024-06-27 18:46:03,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:03,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:03,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:03,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:03,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 270 transitions, 3736 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:03,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:03,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:03,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:04,669 INFO L124 PetriNetUnfolderBase]: 1512/3027 cut-off events. [2024-06-27 18:46:04,669 INFO L125 PetriNetUnfolderBase]: For 62885/62896 co-relation queries the response was YES. [2024-06-27 18:46:04,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19307 conditions, 3027 events. 1512/3027 cut-off events. For 62885/62896 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22305 event pairs, 318 based on Foata normal form. 12/2953 useless extension candidates. Maximal degree in co-relation 19187. Up to 2022 conditions per place. [2024-06-27 18:46:04,700 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 204 selfloop transitions, 107 changer transitions 0/321 dead transitions. [2024-06-27 18:46:04,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 321 transitions, 5176 flow [2024-06-27 18:46:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:46:04,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-27 18:46:04,701 INFO L175 Difference]: Start difference. First operand has 250 places, 270 transitions, 3736 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:46:04,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 321 transitions, 5176 flow [2024-06-27 18:46:04,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 321 transitions, 5058 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 18:46:04,896 INFO L231 Difference]: Finished difference. Result has 259 places, 282 transitions, 4352 flow [2024-06-27 18:46:04,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4352, PETRI_PLACES=259, PETRI_TRANSITIONS=282} [2024-06-27 18:46:04,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-06-27 18:46:04,897 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 282 transitions, 4352 flow [2024-06-27 18:46:04,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:04,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:04,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:04,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:46:04,898 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:04,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1254896290, now seen corresponding path program 3 times [2024-06-27 18:46:04,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:04,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823885236] [2024-06-27 18:46:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:05,911 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 18:46:05,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:05,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823885236] [2024-06-27 18:46:05,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823885236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:05,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:05,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445022223] [2024-06-27 18:46:05,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:06,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:06,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 282 transitions, 4352 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:06,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:06,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:06,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:06,831 INFO L124 PetriNetUnfolderBase]: 1523/3003 cut-off events. [2024-06-27 18:46:06,832 INFO L125 PetriNetUnfolderBase]: For 68530/68541 co-relation queries the response was YES. [2024-06-27 18:46:06,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20180 conditions, 3003 events. 1523/3003 cut-off events. For 68530/68541 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21874 event pairs, 367 based on Foata normal form. 12/2943 useless extension candidates. Maximal degree in co-relation 20055. Up to 2254 conditions per place. [2024-06-27 18:46:06,865 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 248 selfloop transitions, 60 changer transitions 0/318 dead transitions. [2024-06-27 18:46:06,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 318 transitions, 5238 flow [2024-06-27 18:46:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:46:06,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 18:46:06,866 INFO L175 Difference]: Start difference. First operand has 259 places, 282 transitions, 4352 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:46:06,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 318 transitions, 5238 flow [2024-06-27 18:46:07,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 318 transitions, 5000 flow, removed 103 selfloop flow, removed 3 redundant places. [2024-06-27 18:46:07,115 INFO L231 Difference]: Finished difference. Result has 266 places, 284 transitions, 4298 flow [2024-06-27 18:46:07,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4118, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4298, PETRI_PLACES=266, PETRI_TRANSITIONS=284} [2024-06-27 18:46:07,116 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-27 18:46:07,116 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 284 transitions, 4298 flow [2024-06-27 18:46:07,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:07,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:07,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:07,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:46:07,117 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:07,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:07,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2038371108, now seen corresponding path program 7 times [2024-06-27 18:46:07,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:07,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354593192] [2024-06-27 18:46:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:07,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:07,917 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 18:46:07,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:07,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354593192] [2024-06-27 18:46:07,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354593192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:07,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:07,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945518663] [2024-06-27 18:46:07,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:07,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:07,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:07,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:07,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:07,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:07,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 284 transitions, 4298 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:07,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:07,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:07,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:08,755 INFO L124 PetriNetUnfolderBase]: 1539/2972 cut-off events. [2024-06-27 18:46:08,755 INFO L125 PetriNetUnfolderBase]: For 67083/67102 co-relation queries the response was YES. [2024-06-27 18:46:08,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20248 conditions, 2972 events. 1539/2972 cut-off events. For 67083/67102 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21165 event pairs, 327 based on Foata normal form. 21/2936 useless extension candidates. Maximal degree in co-relation 20121. Up to 2361 conditions per place. [2024-06-27 18:46:08,785 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 248 selfloop transitions, 55 changer transitions 0/313 dead transitions. [2024-06-27 18:46:08,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 313 transitions, 5118 flow [2024-06-27 18:46:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:08,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:46:08,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 18:46:08,788 INFO L175 Difference]: Start difference. First operand has 266 places, 284 transitions, 4298 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:46:08,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 313 transitions, 5118 flow [2024-06-27 18:46:09,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 313 transitions, 4966 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:09,047 INFO L231 Difference]: Finished difference. Result has 267 places, 285 transitions, 4293 flow [2024-06-27 18:46:09,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4146, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4293, PETRI_PLACES=267, PETRI_TRANSITIONS=285} [2024-06-27 18:46:09,048 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-27 18:46:09,048 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 285 transitions, 4293 flow [2024-06-27 18:46:09,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:09,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:09,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:09,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:46:09,048 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:09,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:09,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2028695038, now seen corresponding path program 8 times [2024-06-27 18:46:09,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:09,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345588650] [2024-06-27 18:46:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:09,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:09,952 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 18:46:09,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:09,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345588650] [2024-06-27 18:46:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345588650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:09,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:09,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:09,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897204168] [2024-06-27 18:46:09,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:09,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:10,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:10,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 285 transitions, 4293 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:10,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:10,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:10,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:10,722 INFO L124 PetriNetUnfolderBase]: 1555/2961 cut-off events. [2024-06-27 18:46:10,722 INFO L125 PetriNetUnfolderBase]: For 69177/69199 co-relation queries the response was YES. [2024-06-27 18:46:10,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20339 conditions, 2961 events. 1555/2961 cut-off events. For 69177/69199 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20889 event pairs, 280 based on Foata normal form. 24/2937 useless extension candidates. Maximal degree in co-relation 20211. Up to 2369 conditions per place. [2024-06-27 18:46:10,756 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 236 selfloop transitions, 70 changer transitions 0/316 dead transitions. [2024-06-27 18:46:10,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 316 transitions, 5150 flow [2024-06-27 18:46:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:46:10,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:46:10,757 INFO L175 Difference]: Start difference. First operand has 267 places, 285 transitions, 4293 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:46:10,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 316 transitions, 5150 flow [2024-06-27 18:46:11,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 316 transitions, 5011 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:11,042 INFO L231 Difference]: Finished difference. Result has 270 places, 288 transitions, 4367 flow [2024-06-27 18:46:11,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4158, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4367, PETRI_PLACES=270, PETRI_TRANSITIONS=288} [2024-06-27 18:46:11,043 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 18:46:11,043 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 288 transitions, 4367 flow [2024-06-27 18:46:11,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:11,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:11,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:11,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:46:11,043 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:11,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2028517408, now seen corresponding path program 9 times [2024-06-27 18:46:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590556850] [2024-06-27 18:46:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:11,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590556850] [2024-06-27 18:46:11,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590556850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:11,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:11,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:11,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933459214] [2024-06-27 18:46:11,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:11,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:11,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:11,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:11,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:11,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:11,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 288 transitions, 4367 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:11,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:11,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:11,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:12,570 INFO L124 PetriNetUnfolderBase]: 1571/2973 cut-off events. [2024-06-27 18:46:12,570 INFO L125 PetriNetUnfolderBase]: For 71108/71130 co-relation queries the response was YES. [2024-06-27 18:46:12,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20540 conditions, 2973 events. 1571/2973 cut-off events. For 71108/71130 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20975 event pairs, 279 based on Foata normal form. 24/2954 useless extension candidates. Maximal degree in co-relation 20410. Up to 2392 conditions per place. [2024-06-27 18:46:12,604 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 240 selfloop transitions, 67 changer transitions 0/317 dead transitions. [2024-06-27 18:46:12,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 317 transitions, 5203 flow [2024-06-27 18:46:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:46:12,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:46:12,605 INFO L175 Difference]: Start difference. First operand has 270 places, 288 transitions, 4367 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:46:12,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 317 transitions, 5203 flow [2024-06-27 18:46:12,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 317 transitions, 5043 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:46:12,874 INFO L231 Difference]: Finished difference. Result has 273 places, 289 transitions, 4381 flow [2024-06-27 18:46:12,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4207, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4381, PETRI_PLACES=273, PETRI_TRANSITIONS=289} [2024-06-27 18:46:12,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-27 18:46:12,875 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 289 transitions, 4381 flow [2024-06-27 18:46:12,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:12,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:12,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:12,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:46:12,876 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:12,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1359664314, now seen corresponding path program 10 times [2024-06-27 18:46:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029245030] [2024-06-27 18:46:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:13,652 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 18:46:13,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:13,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029245030] [2024-06-27 18:46:13,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029245030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:13,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:13,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:13,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824381642] [2024-06-27 18:46:13,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:13,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:13,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:13,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:13,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:13,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:13,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 289 transitions, 4381 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:13,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:13,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:13,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:14,487 INFO L124 PetriNetUnfolderBase]: 1587/3232 cut-off events. [2024-06-27 18:46:14,488 INFO L125 PetriNetUnfolderBase]: For 73680/73695 co-relation queries the response was YES. [2024-06-27 18:46:14,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21034 conditions, 3232 events. 1587/3232 cut-off events. For 73680/73695 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24130 event pairs, 304 based on Foata normal form. 17/3139 useless extension candidates. Maximal degree in co-relation 20903. Up to 2321 conditions per place. [2024-06-27 18:46:14,524 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 239 selfloop transitions, 70 changer transitions 0/319 dead transitions. [2024-06-27 18:46:14,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 319 transitions, 5223 flow [2024-06-27 18:46:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:46:14,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-06-27 18:46:14,526 INFO L175 Difference]: Start difference. First operand has 273 places, 289 transitions, 4381 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:46:14,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 319 transitions, 5223 flow [2024-06-27 18:46:14,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 319 transitions, 5059 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:14,828 INFO L231 Difference]: Finished difference. Result has 275 places, 290 transitions, 4399 flow [2024-06-27 18:46:14,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4217, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4399, PETRI_PLACES=275, PETRI_TRANSITIONS=290} [2024-06-27 18:46:14,829 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 18:46:14,829 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 290 transitions, 4399 flow [2024-06-27 18:46:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:14,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:14,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:14,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:46:14,830 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:14,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2038364164, now seen corresponding path program 4 times [2024-06-27 18:46:14,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:14,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703339908] [2024-06-27 18:46:14,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:14,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:16,855 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 18:46:16,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:16,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703339908] [2024-06-27 18:46:16,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703339908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:16,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:16,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:16,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407755462] [2024-06-27 18:46:16,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:16,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:16,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:16,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:16,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:16,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:16,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 290 transitions, 4399 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:16,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:16,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:16,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:18,168 INFO L124 PetriNetUnfolderBase]: 1636/3188 cut-off events. [2024-06-27 18:46:18,168 INFO L125 PetriNetUnfolderBase]: For 72342/72362 co-relation queries the response was YES. [2024-06-27 18:46:18,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21467 conditions, 3188 events. 1636/3188 cut-off events. For 72342/72362 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 23203 event pairs, 320 based on Foata normal form. 21/3140 useless extension candidates. Maximal degree in co-relation 21335. Up to 2487 conditions per place. [2024-06-27 18:46:18,203 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 270 selfloop transitions, 72 changer transitions 0/352 dead transitions. [2024-06-27 18:46:18,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 352 transitions, 5698 flow [2024-06-27 18:46:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:46:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:46:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 234 transitions. [2024-06-27 18:46:18,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:46:18,205 INFO L175 Difference]: Start difference. First operand has 275 places, 290 transitions, 4399 flow. Second operand 13 states and 234 transitions. [2024-06-27 18:46:18,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 352 transitions, 5698 flow [2024-06-27 18:46:18,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 352 transitions, 5505 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:46:18,502 INFO L231 Difference]: Finished difference. Result has 287 places, 316 transitions, 4821 flow [2024-06-27 18:46:18,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4821, PETRI_PLACES=287, PETRI_TRANSITIONS=316} [2024-06-27 18:46:18,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 18:46:18,502 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 316 transitions, 4821 flow [2024-06-27 18:46:18,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:18,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:18,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:46:18,503 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:18,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2030089954, now seen corresponding path program 5 times [2024-06-27 18:46:18,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:18,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393185102] [2024-06-27 18:46:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:19,687 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 18:46:19,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:19,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393185102] [2024-06-27 18:46:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393185102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:19,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:19,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:19,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736816044] [2024-06-27 18:46:19,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:19,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:19,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:19,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:19,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:19,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:19,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 316 transitions, 4821 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:19,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:19,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:20,705 INFO L124 PetriNetUnfolderBase]: 1635/3168 cut-off events. [2024-06-27 18:46:20,705 INFO L125 PetriNetUnfolderBase]: For 75039/75058 co-relation queries the response was YES. [2024-06-27 18:46:20,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21774 conditions, 3168 events. 1635/3168 cut-off events. For 75039/75058 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 22909 event pairs, 304 based on Foata normal form. 21/3128 useless extension candidates. Maximal degree in co-relation 21636. Up to 2394 conditions per place. [2024-06-27 18:46:20,750 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 256 selfloop transitions, 84 changer transitions 0/350 dead transitions. [2024-06-27 18:46:20,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 350 transitions, 5815 flow [2024-06-27 18:46:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:46:20,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-27 18:46:20,752 INFO L175 Difference]: Start difference. First operand has 287 places, 316 transitions, 4821 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:46:20,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 350 transitions, 5815 flow [2024-06-27 18:46:21,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 350 transitions, 5575 flow, removed 98 selfloop flow, removed 4 redundant places. [2024-06-27 18:46:21,103 INFO L231 Difference]: Finished difference. Result has 294 places, 318 transitions, 4846 flow [2024-06-27 18:46:21,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4846, PETRI_PLACES=294, PETRI_TRANSITIONS=318} [2024-06-27 18:46:21,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-27 18:46:21,104 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 318 transitions, 4846 flow [2024-06-27 18:46:21,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:21,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:21,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:21,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:46:21,105 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:21,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1368242138, now seen corresponding path program 6 times [2024-06-27 18:46:21,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:21,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768956756] [2024-06-27 18:46:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:22,006 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 18:46:22,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:22,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768956756] [2024-06-27 18:46:22,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768956756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:22,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:22,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:22,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014009873] [2024-06-27 18:46:22,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:22,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:22,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:22,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:22,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:22,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 318 transitions, 4846 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:46:22,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:22,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:22,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:23,053 INFO L124 PetriNetUnfolderBase]: 1649/3144 cut-off events. [2024-06-27 18:46:23,053 INFO L125 PetriNetUnfolderBase]: For 74899/74916 co-relation queries the response was YES. [2024-06-27 18:46:23,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22009 conditions, 3144 events. 1649/3144 cut-off events. For 74899/74916 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 22587 event pairs, 245 based on Foata normal form. 18/3109 useless extension candidates. Maximal degree in co-relation 21868. Up to 1845 conditions per place. [2024-06-27 18:46:23,095 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 207 selfloop transitions, 137 changer transitions 0/354 dead transitions. [2024-06-27 18:46:23,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 354 transitions, 6250 flow [2024-06-27 18:46:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-27 18:46:23,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465465465465466 [2024-06-27 18:46:23,096 INFO L175 Difference]: Start difference. First operand has 294 places, 318 transitions, 4846 flow. Second operand 9 states and 182 transitions. [2024-06-27 18:46:23,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 354 transitions, 6250 flow [2024-06-27 18:46:23,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 354 transitions, 6062 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:23,387 INFO L231 Difference]: Finished difference. Result has 295 places, 322 transitions, 5074 flow [2024-06-27 18:46:23,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4664, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5074, PETRI_PLACES=295, PETRI_TRANSITIONS=322} [2024-06-27 18:46:23,388 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 18:46:23,388 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 322 transitions, 5074 flow [2024-06-27 18:46:23,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:46:23,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:23,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:23,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:46:23,389 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:23,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:23,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1359901898, now seen corresponding path program 7 times [2024-06-27 18:46:23,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:23,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104301595] [2024-06-27 18:46:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:25,089 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 18:46:25,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:25,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104301595] [2024-06-27 18:46:25,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104301595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:25,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:25,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690019278] [2024-06-27 18:46:25,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:25,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:25,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:25,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:25,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:25,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 322 transitions, 5074 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:25,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:25,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:25,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:26,249 INFO L124 PetriNetUnfolderBase]: 1660/3183 cut-off events. [2024-06-27 18:46:26,250 INFO L125 PetriNetUnfolderBase]: For 78104/78119 co-relation queries the response was YES. [2024-06-27 18:46:26,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22637 conditions, 3183 events. 1660/3183 cut-off events. For 78104/78119 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 23034 event pairs, 266 based on Foata normal form. 16/3146 useless extension candidates. Maximal degree in co-relation 22496. Up to 2198 conditions per place. [2024-06-27 18:46:26,289 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 247 selfloop transitions, 100 changer transitions 0/357 dead transitions. [2024-06-27 18:46:26,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 357 transitions, 6092 flow [2024-06-27 18:46:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:46:26,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 18:46:26,291 INFO L175 Difference]: Start difference. First operand has 295 places, 322 transitions, 5074 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:46:26,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 357 transitions, 6092 flow [2024-06-27 18:46:26,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 357 transitions, 5806 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:26,635 INFO L231 Difference]: Finished difference. Result has 298 places, 324 transitions, 5063 flow [2024-06-27 18:46:26,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5063, PETRI_PLACES=298, PETRI_TRANSITIONS=324} [2024-06-27 18:46:26,635 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-27 18:46:26,635 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 324 transitions, 5063 flow [2024-06-27 18:46:26,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:26,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:26,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:26,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:46:26,636 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:26,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1792280290, now seen corresponding path program 8 times [2024-06-27 18:46:26,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:26,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596341525] [2024-06-27 18:46:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:28,202 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 18:46:28,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:28,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596341525] [2024-06-27 18:46:28,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596341525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:28,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:28,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:28,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325267004] [2024-06-27 18:46:28,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:28,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:28,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:28,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 324 transitions, 5063 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:28,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:28,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:28,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:29,201 INFO L124 PetriNetUnfolderBase]: 1658/3280 cut-off events. [2024-06-27 18:46:29,201 INFO L125 PetriNetUnfolderBase]: For 73264/73279 co-relation queries the response was YES. [2024-06-27 18:46:29,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22560 conditions, 3280 events. 1658/3280 cut-off events. For 73264/73279 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 24362 event pairs, 422 based on Foata normal form. 16/3224 useless extension candidates. Maximal degree in co-relation 22419. Up to 2697 conditions per place. [2024-06-27 18:46:29,240 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 20 changer transitions 0/358 dead transitions. [2024-06-27 18:46:29,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 358 transitions, 6029 flow [2024-06-27 18:46:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:46:29,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:46:29,256 INFO L175 Difference]: Start difference. First operand has 298 places, 324 transitions, 5063 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:46:29,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 358 transitions, 6029 flow [2024-06-27 18:46:29,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 358 transitions, 5764 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:29,566 INFO L231 Difference]: Finished difference. Result has 300 places, 324 transitions, 4843 flow [2024-06-27 18:46:29,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4798, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4843, PETRI_PLACES=300, PETRI_TRANSITIONS=324} [2024-06-27 18:46:29,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-27 18:46:29,567 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 324 transitions, 4843 flow [2024-06-27 18:46:29,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:29,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:29,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:29,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:46:29,568 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:29,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:29,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1359671258, now seen corresponding path program 9 times [2024-06-27 18:46:29,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672937535] [2024-06-27 18:46:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:29,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:31,342 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 18:46:31,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:31,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672937535] [2024-06-27 18:46:31,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672937535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:31,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:31,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:31,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799775398] [2024-06-27 18:46:31,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:31,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:31,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:31,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:31,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:31,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 324 transitions, 4843 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:31,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:31,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:31,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:32,479 INFO L124 PetriNetUnfolderBase]: 1656/3163 cut-off events. [2024-06-27 18:46:32,479 INFO L125 PetriNetUnfolderBase]: For 67592/67609 co-relation queries the response was YES. [2024-06-27 18:46:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21772 conditions, 3163 events. 1656/3163 cut-off events. For 67592/67609 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 22807 event pairs, 263 based on Foata normal form. 18/3123 useless extension candidates. Maximal degree in co-relation 21630. Up to 2098 conditions per place. [2024-06-27 18:46:32,519 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 224 selfloop transitions, 124 changer transitions 0/358 dead transitions. [2024-06-27 18:46:32,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 358 transitions, 5807 flow [2024-06-27 18:46:32,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:46:32,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 18:46:32,520 INFO L175 Difference]: Start difference. First operand has 300 places, 324 transitions, 4843 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:46:32,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 358 transitions, 5807 flow [2024-06-27 18:46:32,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 358 transitions, 5714 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:32,835 INFO L231 Difference]: Finished difference. Result has 300 places, 324 transitions, 5003 flow [2024-06-27 18:46:32,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4750, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5003, PETRI_PLACES=300, PETRI_TRANSITIONS=324} [2024-06-27 18:46:32,836 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-27 18:46:32,836 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 324 transitions, 5003 flow [2024-06-27 18:46:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:32,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:32,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:32,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:46:32,837 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:32,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 104687572, now seen corresponding path program 11 times [2024-06-27 18:46:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767209939] [2024-06-27 18:46:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:33,505 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 18:46:33,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:33,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767209939] [2024-06-27 18:46:33,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767209939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:33,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:33,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:33,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257670815] [2024-06-27 18:46:33,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:33,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:33,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:33,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:33,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:33,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:33,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 324 transitions, 5003 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:33,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:33,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:33,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:34,429 INFO L124 PetriNetUnfolderBase]: 1682/3347 cut-off events. [2024-06-27 18:46:34,430 INFO L125 PetriNetUnfolderBase]: For 75383/75394 co-relation queries the response was YES. [2024-06-27 18:46:34,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22693 conditions, 3347 events. 1682/3347 cut-off events. For 75383/75394 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 25030 event pairs, 426 based on Foata normal form. 13/3266 useless extension candidates. Maximal degree in co-relation 22550. Up to 2634 conditions per place. [2024-06-27 18:46:34,474 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 307 selfloop transitions, 41 changer transitions 0/358 dead transitions. [2024-06-27 18:46:34,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 358 transitions, 5899 flow [2024-06-27 18:46:34,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:46:34,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:46:34,475 INFO L175 Difference]: Start difference. First operand has 300 places, 324 transitions, 5003 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:46:34,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 358 transitions, 5899 flow [2024-06-27 18:46:34,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 358 transitions, 5635 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:34,807 INFO L231 Difference]: Finished difference. Result has 301 places, 326 transitions, 4875 flow [2024-06-27 18:46:34,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4739, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4875, PETRI_PLACES=301, PETRI_TRANSITIONS=326} [2024-06-27 18:46:34,808 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-27 18:46:34,808 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 326 transitions, 4875 flow [2024-06-27 18:46:34,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:34,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:34,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:34,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:46:34,809 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:34,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:34,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1645757284, now seen corresponding path program 12 times [2024-06-27 18:46:34,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:34,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027349530] [2024-06-27 18:46:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:34,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:35,655 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 18:46:35,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:35,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027349530] [2024-06-27 18:46:35,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027349530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:35,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:35,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:35,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236766514] [2024-06-27 18:46:35,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:35,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:35,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:35,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:35,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 326 transitions, 4875 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:35,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:35,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:35,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:36,647 INFO L124 PetriNetUnfolderBase]: 1708/3392 cut-off events. [2024-06-27 18:46:36,647 INFO L125 PetriNetUnfolderBase]: For 76979/76993 co-relation queries the response was YES. [2024-06-27 18:46:36,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22710 conditions, 3392 events. 1708/3392 cut-off events. For 76979/76993 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25346 event pairs, 446 based on Foata normal form. 16/3313 useless extension candidates. Maximal degree in co-relation 22566. Up to 2698 conditions per place. [2024-06-27 18:46:36,693 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 299 selfloop transitions, 54 changer transitions 0/363 dead transitions. [2024-06-27 18:46:36,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 363 transitions, 5883 flow [2024-06-27 18:46:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:46:36,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-27 18:46:36,694 INFO L175 Difference]: Start difference. First operand has 301 places, 326 transitions, 4875 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:46:36,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 363 transitions, 5883 flow [2024-06-27 18:46:37,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 363 transitions, 5773 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:37,027 INFO L231 Difference]: Finished difference. Result has 305 places, 330 transitions, 4986 flow [2024-06-27 18:46:37,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4986, PETRI_PLACES=305, PETRI_TRANSITIONS=330} [2024-06-27 18:46:37,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 18:46:37,028 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 330 transitions, 4986 flow [2024-06-27 18:46:37,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:37,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:37,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:37,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:46:37,029 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:37,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1642808612, now seen corresponding path program 10 times [2024-06-27 18:46:37,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:37,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291412568] [2024-06-27 18:46:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:38,039 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 18:46:38,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:38,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291412568] [2024-06-27 18:46:38,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291412568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:38,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:38,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984568525] [2024-06-27 18:46:38,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:38,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:38,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:38,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:38,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 330 transitions, 4986 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:38,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:38,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:38,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:39,074 INFO L124 PetriNetUnfolderBase]: 1792/3541 cut-off events. [2024-06-27 18:46:39,074 INFO L125 PetriNetUnfolderBase]: For 74083/74094 co-relation queries the response was YES. [2024-06-27 18:46:39,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23696 conditions, 3541 events. 1792/3541 cut-off events. For 74083/74094 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 26589 event pairs, 465 based on Foata normal form. 12/3457 useless extension candidates. Maximal degree in co-relation 23549. Up to 2731 conditions per place. [2024-06-27 18:46:39,124 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 317 selfloop transitions, 58 changer transitions 0/385 dead transitions. [2024-06-27 18:46:39,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 385 transitions, 6237 flow [2024-06-27 18:46:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 18:46:39,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:46:39,125 INFO L175 Difference]: Start difference. First operand has 305 places, 330 transitions, 4986 flow. Second operand 11 states and 209 transitions. [2024-06-27 18:46:39,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 385 transitions, 6237 flow [2024-06-27 18:46:39,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 385 transitions, 6020 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:39,550 INFO L231 Difference]: Finished difference. Result has 312 places, 347 transitions, 5197 flow [2024-06-27 18:46:39,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4769, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5197, PETRI_PLACES=312, PETRI_TRANSITIONS=347} [2024-06-27 18:46:39,550 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 271 predicate places. [2024-06-27 18:46:39,550 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 347 transitions, 5197 flow [2024-06-27 18:46:39,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:39,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:39,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:39,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:46:39,551 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:39,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:39,552 INFO L85 PathProgramCache]: Analyzing trace with hash -171880292, now seen corresponding path program 13 times [2024-06-27 18:46:39,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:39,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765699771] [2024-06-27 18:46:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:39,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:40,300 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 18:46:40,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:40,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765699771] [2024-06-27 18:46:40,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765699771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:40,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:40,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:40,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129318394] [2024-06-27 18:46:40,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:40,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:40,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:40,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:40,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 347 transitions, 5197 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:40,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:40,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:40,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:41,417 INFO L124 PetriNetUnfolderBase]: 1828/3630 cut-off events. [2024-06-27 18:46:41,418 INFO L125 PetriNetUnfolderBase]: For 77333/77344 co-relation queries the response was YES. [2024-06-27 18:46:41,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24251 conditions, 3630 events. 1828/3630 cut-off events. For 77333/77344 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27507 event pairs, 447 based on Foata normal form. 13/3541 useless extension candidates. Maximal degree in co-relation 24100. Up to 2841 conditions per place. [2024-06-27 18:46:41,467 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 319 selfloop transitions, 55 changer transitions 0/384 dead transitions. [2024-06-27 18:46:41,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 384 transitions, 6169 flow [2024-06-27 18:46:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:46:41,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914004914004914 [2024-06-27 18:46:41,468 INFO L175 Difference]: Start difference. First operand has 312 places, 347 transitions, 5197 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:46:41,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 384 transitions, 6169 flow [2024-06-27 18:46:41,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 384 transitions, 6054 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:46:41,951 INFO L231 Difference]: Finished difference. Result has 317 places, 350 transitions, 5261 flow [2024-06-27 18:46:41,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5261, PETRI_PLACES=317, PETRI_TRANSITIONS=350} [2024-06-27 18:46:41,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-27 18:46:41,952 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 350 transitions, 5261 flow [2024-06-27 18:46:41,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:41,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:41,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:41,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:46:41,953 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:41,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 668195318, now seen corresponding path program 14 times [2024-06-27 18:46:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:41,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576735410] [2024-06-27 18:46:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:42,789 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 18:46:42,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576735410] [2024-06-27 18:46:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576735410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:42,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:42,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365601447] [2024-06-27 18:46:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:42,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:42,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 350 transitions, 5261 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:42,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:42,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:42,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:43,896 INFO L124 PetriNetUnfolderBase]: 1860/3699 cut-off events. [2024-06-27 18:46:43,896 INFO L125 PetriNetUnfolderBase]: For 77235/77251 co-relation queries the response was YES. [2024-06-27 18:46:43,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24579 conditions, 3699 events. 1860/3699 cut-off events. For 77235/77251 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 28043 event pairs, 387 based on Foata normal form. 18/3605 useless extension candidates. Maximal degree in co-relation 24427. Up to 2810 conditions per place. [2024-06-27 18:46:43,940 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 314 selfloop transitions, 65 changer transitions 0/389 dead transitions. [2024-06-27 18:46:43,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 389 transitions, 6307 flow [2024-06-27 18:46:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:46:43,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:46:43,941 INFO L175 Difference]: Start difference. First operand has 317 places, 350 transitions, 5261 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:46:43,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 389 transitions, 6307 flow [2024-06-27 18:46:44,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 389 transitions, 6131 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:44,407 INFO L231 Difference]: Finished difference. Result has 319 places, 355 transitions, 5378 flow [2024-06-27 18:46:44,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5122, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5378, PETRI_PLACES=319, PETRI_TRANSITIONS=355} [2024-06-27 18:46:44,409 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-27 18:46:44,409 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 355 transitions, 5378 flow [2024-06-27 18:46:44,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:46:44,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:44,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:44,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:46:44,410 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:44,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash -247086437, now seen corresponding path program 1 times [2024-06-27 18:46:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144594946] [2024-06-27 18:46:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:44,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:45,307 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 18:46:45,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:45,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144594946] [2024-06-27 18:46:45,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144594946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:45,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:45,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851366108] [2024-06-27 18:46:45,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:45,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:45,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:45,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:45,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 355 transitions, 5378 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:45,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:45,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:45,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:46,526 INFO L124 PetriNetUnfolderBase]: 1928/3937 cut-off events. [2024-06-27 18:46:46,526 INFO L125 PetriNetUnfolderBase]: For 96435/96448 co-relation queries the response was YES. [2024-06-27 18:46:46,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25484 conditions, 3937 events. 1928/3937 cut-off events. For 96435/96448 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30839 event pairs, 486 based on Foata normal form. 23/3829 useless extension candidates. Maximal degree in co-relation 25330. Up to 2662 conditions per place. [2024-06-27 18:46:46,579 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 301 selfloop transitions, 83 changer transitions 0/394 dead transitions. [2024-06-27 18:46:46,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 394 transitions, 6480 flow [2024-06-27 18:46:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:46:46,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216216216216216 [2024-06-27 18:46:46,580 INFO L175 Difference]: Start difference. First operand has 319 places, 355 transitions, 5378 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:46:46,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 394 transitions, 6480 flow [2024-06-27 18:46:47,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 394 transitions, 6303 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:47,034 INFO L231 Difference]: Finished difference. Result has 321 places, 356 transitions, 5399 flow [2024-06-27 18:46:47,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5201, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5399, PETRI_PLACES=321, PETRI_TRANSITIONS=356} [2024-06-27 18:46:47,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 18:46:47,034 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 356 transitions, 5399 flow [2024-06-27 18:46:47,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:47,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:47,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:47,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:46:47,035 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:47,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash -503586947, now seen corresponding path program 2 times [2024-06-27 18:46:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:47,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158477611] [2024-06-27 18:46:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:48,380 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 18:46:48,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158477611] [2024-06-27 18:46:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158477611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:48,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:48,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931492726] [2024-06-27 18:46:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:48,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:48,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:48,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 356 transitions, 5399 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:48,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:48,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:48,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:49,673 INFO L124 PetriNetUnfolderBase]: 1944/3927 cut-off events. [2024-06-27 18:46:49,674 INFO L125 PetriNetUnfolderBase]: For 78672/78686 co-relation queries the response was YES. [2024-06-27 18:46:49,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25645 conditions, 3927 events. 1944/3927 cut-off events. For 78672/78686 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 30532 event pairs, 547 based on Foata normal form. 16/3822 useless extension candidates. Maximal degree in co-relation 25490. Up to 3054 conditions per place. [2024-06-27 18:46:49,727 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 332 selfloop transitions, 52 changer transitions 0/394 dead transitions. [2024-06-27 18:46:49,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 394 transitions, 6494 flow [2024-06-27 18:46:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:46:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:46:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 232 transitions. [2024-06-27 18:46:49,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48232848232848236 [2024-06-27 18:46:49,729 INFO L175 Difference]: Start difference. First operand has 321 places, 356 transitions, 5399 flow. Second operand 13 states and 232 transitions. [2024-06-27 18:46:49,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 394 transitions, 6494 flow [2024-06-27 18:46:50,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 394 transitions, 6309 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:50,328 INFO L231 Difference]: Finished difference. Result has 326 places, 357 transitions, 5349 flow [2024-06-27 18:46:50,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5216, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5349, PETRI_PLACES=326, PETRI_TRANSITIONS=357} [2024-06-27 18:46:50,328 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-27 18:46:50,329 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 357 transitions, 5349 flow [2024-06-27 18:46:50,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:50,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:50,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:50,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:46:50,329 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:50,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash -99519871, now seen corresponding path program 3 times [2024-06-27 18:46:50,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:50,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348365724] [2024-06-27 18:46:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:50,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:51,261 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 18:46:51,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:51,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348365724] [2024-06-27 18:46:51,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348365724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:51,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:51,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:51,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064856554] [2024-06-27 18:46:51,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:51,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:51,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:51,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:51,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:51,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:51,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 357 transitions, 5349 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:51,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:51,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:51,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:52,549 INFO L124 PetriNetUnfolderBase]: 2110/4206 cut-off events. [2024-06-27 18:46:52,550 INFO L125 PetriNetUnfolderBase]: For 115723/115741 co-relation queries the response was YES. [2024-06-27 18:46:52,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27852 conditions, 4206 events. 2110/4206 cut-off events. For 115723/115741 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 32948 event pairs, 599 based on Foata normal form. 26/4120 useless extension candidates. Maximal degree in co-relation 27696. Up to 2967 conditions per place. [2024-06-27 18:46:52,599 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 345 selfloop transitions, 50 changer transitions 0/405 dead transitions. [2024-06-27 18:46:52,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 405 transitions, 6745 flow [2024-06-27 18:46:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:46:52,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216216216216216 [2024-06-27 18:46:52,600 INFO L175 Difference]: Start difference. First operand has 326 places, 357 transitions, 5349 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:46:52,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 405 transitions, 6745 flow [2024-06-27 18:46:53,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 405 transitions, 6633 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:53,237 INFO L231 Difference]: Finished difference. Result has 328 places, 359 transitions, 5397 flow [2024-06-27 18:46:53,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5240, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5397, PETRI_PLACES=328, PETRI_TRANSITIONS=359} [2024-06-27 18:46:53,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-27 18:46:53,238 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 359 transitions, 5397 flow [2024-06-27 18:46:53,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:53,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:53,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:53,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:46:53,239 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:53,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1021411995, now seen corresponding path program 4 times [2024-06-27 18:46:53,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:53,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035004532] [2024-06-27 18:46:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:54,031 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 18:46:54,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035004532] [2024-06-27 18:46:54,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035004532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:54,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:54,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:54,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480011536] [2024-06-27 18:46:54,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:54,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:54,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:54,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:54,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 359 transitions, 5397 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:54,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:54,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:54,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:55,286 INFO L124 PetriNetUnfolderBase]: 2100/4239 cut-off events. [2024-06-27 18:46:55,286 INFO L125 PetriNetUnfolderBase]: For 99413/99431 co-relation queries the response was YES. [2024-06-27 18:46:55,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27263 conditions, 4239 events. 2100/4239 cut-off events. For 99413/99431 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 33530 event pairs, 630 based on Foata normal form. 26/4144 useless extension candidates. Maximal degree in co-relation 27105. Up to 3157 conditions per place. [2024-06-27 18:46:55,346 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 340 selfloop transitions, 50 changer transitions 0/400 dead transitions. [2024-06-27 18:46:55,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 400 transitions, 6560 flow [2024-06-27 18:46:55,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:46:55,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 18:46:55,348 INFO L175 Difference]: Start difference. First operand has 328 places, 359 transitions, 5397 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:46:55,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 400 transitions, 6560 flow [2024-06-27 18:46:55,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 400 transitions, 6479 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:55,947 INFO L231 Difference]: Finished difference. Result has 331 places, 359 transitions, 5425 flow [2024-06-27 18:46:55,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5316, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5425, PETRI_PLACES=331, PETRI_TRANSITIONS=359} [2024-06-27 18:46:55,948 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 18:46:55,948 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 359 transitions, 5425 flow [2024-06-27 18:46:55,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:55,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:55,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:55,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:46:55,949 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:55,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1787800283, now seen corresponding path program 5 times [2024-06-27 18:46:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322837575] [2024-06-27 18:46:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:56,813 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 18:46:56,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:56,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322837575] [2024-06-27 18:46:56,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322837575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:56,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:56,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:56,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025004602] [2024-06-27 18:46:56,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:56,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:56,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:56,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:56,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 359 transitions, 5425 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:56,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:56,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:56,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:58,095 INFO L124 PetriNetUnfolderBase]: 2135/4272 cut-off events. [2024-06-27 18:46:58,096 INFO L125 PetriNetUnfolderBase]: For 92813/92826 co-relation queries the response was YES. [2024-06-27 18:46:58,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27893 conditions, 4272 events. 2135/4272 cut-off events. For 92813/92826 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33583 event pairs, 604 based on Foata normal form. 15/4173 useless extension candidates. Maximal degree in co-relation 27734. Up to 2940 conditions per place. [2024-06-27 18:46:58,149 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 304 selfloop transitions, 87 changer transitions 0/401 dead transitions. [2024-06-27 18:46:58,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 401 transitions, 6715 flow [2024-06-27 18:46:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 18:46:58,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297297297297298 [2024-06-27 18:46:58,151 INFO L175 Difference]: Start difference. First operand has 331 places, 359 transitions, 5425 flow. Second operand 10 states and 196 transitions. [2024-06-27 18:46:58,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 401 transitions, 6715 flow [2024-06-27 18:46:58,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 401 transitions, 6616 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:58,719 INFO L231 Difference]: Finished difference. Result has 333 places, 361 transitions, 5554 flow [2024-06-27 18:46:58,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5326, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5554, PETRI_PLACES=333, PETRI_TRANSITIONS=361} [2024-06-27 18:46:58,720 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-27 18:46:58,720 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 361 transitions, 5554 flow [2024-06-27 18:46:58,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:58,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:58,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:58,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:46:58,720 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:58,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash -987674601, now seen corresponding path program 6 times [2024-06-27 18:46:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:58,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158638064] [2024-06-27 18:46:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:58,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:59,504 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 18:46:59,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158638064] [2024-06-27 18:46:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158638064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832245660] [2024-06-27 18:46:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:59,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:46:59,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 361 transitions, 5554 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:46:59,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:59,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:46:59,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:00,706 INFO L124 PetriNetUnfolderBase]: 2187/4347 cut-off events. [2024-06-27 18:47:00,707 INFO L125 PetriNetUnfolderBase]: For 112233/112253 co-relation queries the response was YES. [2024-06-27 18:47:00,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28790 conditions, 4347 events. 2187/4347 cut-off events. For 112233/112253 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 34216 event pairs, 676 based on Foata normal form. 28/4263 useless extension candidates. Maximal degree in co-relation 28630. Up to 3475 conditions per place. [2024-06-27 18:47:00,759 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 351 selfloop transitions, 39 changer transitions 0/400 dead transitions. [2024-06-27 18:47:00,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 400 transitions, 6643 flow [2024-06-27 18:47:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:47:00,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:47:00,761 INFO L175 Difference]: Start difference. First operand has 333 places, 361 transitions, 5554 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:47:00,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 400 transitions, 6643 flow [2024-06-27 18:47:01,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 400 transitions, 6504 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:47:01,329 INFO L231 Difference]: Finished difference. Result has 337 places, 361 transitions, 5496 flow [2024-06-27 18:47:01,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5415, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5496, PETRI_PLACES=337, PETRI_TRANSITIONS=361} [2024-06-27 18:47:01,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-27 18:47:01,330 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 361 transitions, 5496 flow [2024-06-27 18:47:01,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:01,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:01,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:01,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:47:01,330 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:01,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:01,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2092938281, now seen corresponding path program 7 times [2024-06-27 18:47:01,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:01,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908491413] [2024-06-27 18:47:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:01,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:02,210 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 18:47:02,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908491413] [2024-06-27 18:47:02,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908491413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:02,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:02,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:02,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505527875] [2024-06-27 18:47:02,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:02,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:02,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:02,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:02,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:02,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 361 transitions, 5496 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:02,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:02,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:02,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:03,507 INFO L124 PetriNetUnfolderBase]: 2244/4478 cut-off events. [2024-06-27 18:47:03,507 INFO L125 PetriNetUnfolderBase]: For 114332/114349 co-relation queries the response was YES. [2024-06-27 18:47:03,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29405 conditions, 4478 events. 2244/4478 cut-off events. For 114332/114349 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 35565 event pairs, 722 based on Foata normal form. 25/4389 useless extension candidates. Maximal degree in co-relation 29243. Up to 3574 conditions per place. [2024-06-27 18:47:03,562 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 349 selfloop transitions, 43 changer transitions 0/402 dead transitions. [2024-06-27 18:47:03,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 402 transitions, 6628 flow [2024-06-27 18:47:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:47:03,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 18:47:03,563 INFO L175 Difference]: Start difference. First operand has 337 places, 361 transitions, 5496 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:47:03,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 402 transitions, 6628 flow [2024-06-27 18:47:04,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 402 transitions, 6551 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:04,282 INFO L231 Difference]: Finished difference. Result has 341 places, 363 transitions, 5596 flow [2024-06-27 18:47:04,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5419, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5596, PETRI_PLACES=341, PETRI_TRANSITIONS=363} [2024-06-27 18:47:04,282 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-27 18:47:04,283 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 363 transitions, 5596 flow [2024-06-27 18:47:04,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:04,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:04,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:04,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:47:04,283 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:04,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2087431751, now seen corresponding path program 8 times [2024-06-27 18:47:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:04,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790134110] [2024-06-27 18:47:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:04,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:05,516 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 18:47:05,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:05,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790134110] [2024-06-27 18:47:05,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790134110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:05,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:05,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:05,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439540301] [2024-06-27 18:47:05,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:05,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:05,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:05,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:05,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 363 transitions, 5596 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:05,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:05,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:05,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:06,980 INFO L124 PetriNetUnfolderBase]: 2460/4876 cut-off events. [2024-06-27 18:47:06,980 INFO L125 PetriNetUnfolderBase]: For 143513/143528 co-relation queries the response was YES. [2024-06-27 18:47:07,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32559 conditions, 4876 events. 2460/4876 cut-off events. For 143513/143528 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 39267 event pairs, 804 based on Foata normal form. 23/4781 useless extension candidates. Maximal degree in co-relation 32394. Up to 3756 conditions per place. [2024-06-27 18:47:07,047 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 357 selfloop transitions, 45 changer transitions 0/412 dead transitions. [2024-06-27 18:47:07,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 412 transitions, 7032 flow [2024-06-27 18:47:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 18:47:07,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110565110565111 [2024-06-27 18:47:07,049 INFO L175 Difference]: Start difference. First operand has 341 places, 363 transitions, 5596 flow. Second operand 11 states and 208 transitions. [2024-06-27 18:47:07,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 412 transitions, 7032 flow [2024-06-27 18:47:07,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 412 transitions, 6890 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:47:07,934 INFO L231 Difference]: Finished difference. Result has 349 places, 370 transitions, 5688 flow [2024-06-27 18:47:07,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5457, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5688, PETRI_PLACES=349, PETRI_TRANSITIONS=370} [2024-06-27 18:47:07,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-27 18:47:07,935 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 370 transitions, 5688 flow [2024-06-27 18:47:07,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:07,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:07,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:07,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:47:07,936 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:07,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:07,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2087224361, now seen corresponding path program 9 times [2024-06-27 18:47:07,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:07,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629087532] [2024-06-27 18:47:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:09,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629087532] [2024-06-27 18:47:09,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629087532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:09,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389767070] [2024-06-27 18:47:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:09,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:09,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:09,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:09,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 370 transitions, 5688 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:09,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:09,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:09,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:10,602 INFO L124 PetriNetUnfolderBase]: 2450/4872 cut-off events. [2024-06-27 18:47:10,603 INFO L125 PetriNetUnfolderBase]: For 123976/123991 co-relation queries the response was YES. [2024-06-27 18:47:10,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31959 conditions, 4872 events. 2450/4872 cut-off events. For 123976/123991 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 39282 event pairs, 835 based on Foata normal form. 23/4774 useless extension candidates. Maximal degree in co-relation 31790. Up to 3894 conditions per place. [2024-06-27 18:47:10,671 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 351 selfloop transitions, 46 changer transitions 0/407 dead transitions. [2024-06-27 18:47:10,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 407 transitions, 6807 flow [2024-06-27 18:47:10,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:47:10,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-27 18:47:10,672 INFO L175 Difference]: Start difference. First operand has 349 places, 370 transitions, 5688 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:47:10,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 407 transitions, 6807 flow [2024-06-27 18:47:11,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 407 transitions, 6731 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:47:11,528 INFO L231 Difference]: Finished difference. Result has 354 places, 371 transitions, 5735 flow [2024-06-27 18:47:11,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5612, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5735, PETRI_PLACES=354, PETRI_TRANSITIONS=371} [2024-06-27 18:47:11,529 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-27 18:47:11,529 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 371 transitions, 5735 flow [2024-06-27 18:47:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:11,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:11,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:11,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:47:11,530 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:11,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1431263771, now seen corresponding path program 10 times [2024-06-27 18:47:11,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:11,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129301809] [2024-06-27 18:47:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:11,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:12,283 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 18:47:12,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129301809] [2024-06-27 18:47:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129301809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:12,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:12,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708558856] [2024-06-27 18:47:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:12,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:12,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:12,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:12,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 371 transitions, 5735 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:12,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:12,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:12,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:13,630 INFO L124 PetriNetUnfolderBase]: 2502/4927 cut-off events. [2024-06-27 18:47:13,631 INFO L125 PetriNetUnfolderBase]: For 126970/126988 co-relation queries the response was YES. [2024-06-27 18:47:13,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32557 conditions, 4927 events. 2502/4927 cut-off events. For 126970/126988 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 39618 event pairs, 724 based on Foata normal form. 26/4839 useless extension candidates. Maximal degree in co-relation 32386. Up to 3617 conditions per place. [2024-06-27 18:47:13,707 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 325 selfloop transitions, 75 changer transitions 0/410 dead transitions. [2024-06-27 18:47:13,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 410 transitions, 6787 flow [2024-06-27 18:47:13,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:47:13,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 18:47:13,709 INFO L175 Difference]: Start difference. First operand has 354 places, 371 transitions, 5735 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:47:13,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 410 transitions, 6787 flow [2024-06-27 18:47:14,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 410 transitions, 6671 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:14,570 INFO L231 Difference]: Finished difference. Result has 355 places, 371 transitions, 5781 flow [2024-06-27 18:47:14,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5781, PETRI_PLACES=355, PETRI_TRANSITIONS=371} [2024-06-27 18:47:14,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 18:47:14,571 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 371 transitions, 5781 flow [2024-06-27 18:47:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:14,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:14,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:14,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:47:14,572 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:14,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:14,572 INFO L85 PathProgramCache]: Analyzing trace with hash -237555301, now seen corresponding path program 1 times [2024-06-27 18:47:14,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:14,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166202457] [2024-06-27 18:47:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:15,636 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 18:47:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166202457] [2024-06-27 18:47:15,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166202457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:15,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:15,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:15,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316044663] [2024-06-27 18:47:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:15,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:15,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:15,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:15,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:15,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:15,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 371 transitions, 5781 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:47:15,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:15,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:15,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:17,105 INFO L124 PetriNetUnfolderBase]: 2604/5248 cut-off events. [2024-06-27 18:47:17,105 INFO L125 PetriNetUnfolderBase]: For 152965/152980 co-relation queries the response was YES. [2024-06-27 18:47:17,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34878 conditions, 5248 events. 2604/5248 cut-off events. For 152965/152980 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 43385 event pairs, 762 based on Foata normal form. 21/5136 useless extension candidates. Maximal degree in co-relation 34706. Up to 3137 conditions per place. [2024-06-27 18:47:17,177 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 279 selfloop transitions, 134 changer transitions 0/423 dead transitions. [2024-06-27 18:47:17,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 423 transitions, 7327 flow [2024-06-27 18:47:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 18:47:17,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233415233415234 [2024-06-27 18:47:17,178 INFO L175 Difference]: Start difference. First operand has 355 places, 371 transitions, 5781 flow. Second operand 11 states and 213 transitions. [2024-06-27 18:47:17,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 423 transitions, 7327 flow [2024-06-27 18:47:18,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 423 transitions, 7187 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:18,216 INFO L231 Difference]: Finished difference. Result has 359 places, 372 transitions, 5985 flow [2024-06-27 18:47:18,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5641, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5985, PETRI_PLACES=359, PETRI_TRANSITIONS=372} [2024-06-27 18:47:18,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 18:47:18,223 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 372 transitions, 5985 flow [2024-06-27 18:47:18,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:47:18,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:18,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:18,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:47:18,223 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:18,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash -247078501, now seen corresponding path program 2 times [2024-06-27 18:47:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:18,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519939634] [2024-06-27 18:47:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:18,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:19,435 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 18:47:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519939634] [2024-06-27 18:47:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519939634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:19,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:19,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:19,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972290661] [2024-06-27 18:47:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:19,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:19,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:19,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 372 transitions, 5985 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:47:19,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:19,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:19,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:21,132 INFO L124 PetriNetUnfolderBase]: 2656/5355 cut-off events. [2024-06-27 18:47:21,132 INFO L125 PetriNetUnfolderBase]: For 169656/169671 co-relation queries the response was YES. [2024-06-27 18:47:21,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35979 conditions, 5355 events. 2656/5355 cut-off events. For 169656/169671 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 44544 event pairs, 914 based on Foata normal form. 23/5241 useless extension candidates. Maximal degree in co-relation 35805. Up to 3917 conditions per place. [2024-06-27 18:47:21,210 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 320 selfloop transitions, 85 changer transitions 0/415 dead transitions. [2024-06-27 18:47:21,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 415 transitions, 7151 flow [2024-06-27 18:47:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 18:47:21,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184275184275184 [2024-06-27 18:47:21,211 INFO L175 Difference]: Start difference. First operand has 359 places, 372 transitions, 5985 flow. Second operand 11 states and 211 transitions. [2024-06-27 18:47:21,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 415 transitions, 7151 flow [2024-06-27 18:47:22,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 415 transitions, 6905 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:22,285 INFO L231 Difference]: Finished difference. Result has 362 places, 372 transitions, 5923 flow [2024-06-27 18:47:22,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5739, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5923, PETRI_PLACES=362, PETRI_TRANSITIONS=372} [2024-06-27 18:47:22,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-27 18:47:22,285 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 372 transitions, 5923 flow [2024-06-27 18:47:22,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:47:22,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:22,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:22,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:47:22,286 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:22,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1788015609, now seen corresponding path program 3 times [2024-06-27 18:47:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:22,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603322649] [2024-06-27 18:47:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:22,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:23,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:23,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603322649] [2024-06-27 18:47:23,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603322649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:23,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196606754] [2024-06-27 18:47:23,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:23,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:23,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 372 transitions, 5923 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:47:23,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:23,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:23,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:25,228 INFO L124 PetriNetUnfolderBase]: 2655/5300 cut-off events. [2024-06-27 18:47:25,229 INFO L125 PetriNetUnfolderBase]: For 147134/147149 co-relation queries the response was YES. [2024-06-27 18:47:25,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35143 conditions, 5300 events. 2655/5300 cut-off events. For 147134/147149 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 43745 event pairs, 941 based on Foata normal form. 25/5204 useless extension candidates. Maximal degree in co-relation 34968. Up to 4122 conditions per place. [2024-06-27 18:47:25,305 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 332 selfloop transitions, 73 changer transitions 0/415 dead transitions. [2024-06-27 18:47:25,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 415 transitions, 7089 flow [2024-06-27 18:47:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:47:25,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515970515970516 [2024-06-27 18:47:25,321 INFO L175 Difference]: Start difference. First operand has 362 places, 372 transitions, 5923 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:47:25,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 415 transitions, 7089 flow [2024-06-27 18:47:26,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 415 transitions, 6901 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 18:47:26,353 INFO L231 Difference]: Finished difference. Result has 363 places, 372 transitions, 5894 flow [2024-06-27 18:47:26,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5735, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5894, PETRI_PLACES=363, PETRI_TRANSITIONS=372} [2024-06-27 18:47:26,354 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-27 18:47:26,354 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 372 transitions, 5894 flow [2024-06-27 18:47:26,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:47:26,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:26,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:26,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:47:26,356 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:26,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash -404269975, now seen corresponding path program 11 times [2024-06-27 18:47:26,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506946574] [2024-06-27 18:47:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:26,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:27,490 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 18:47:27,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:27,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506946574] [2024-06-27 18:47:27,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506946574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:27,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:27,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432168737] [2024-06-27 18:47:27,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:27,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:27,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:27,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:27,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 372 transitions, 5894 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:27,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:27,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:27,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:28,970 INFO L124 PetriNetUnfolderBase]: 2723/5381 cut-off events. [2024-06-27 18:47:28,971 INFO L125 PetriNetUnfolderBase]: For 152328/152347 co-relation queries the response was YES. [2024-06-27 18:47:29,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35891 conditions, 5381 events. 2723/5381 cut-off events. For 152328/152347 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 44103 event pairs, 757 based on Foata normal form. 29/5309 useless extension candidates. Maximal degree in co-relation 35715. Up to 3744 conditions per place. [2024-06-27 18:47:29,050 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 270 selfloop transitions, 130 changer transitions 0/410 dead transitions. [2024-06-27 18:47:29,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 410 transitions, 7044 flow [2024-06-27 18:47:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 18:47:29,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378378378378378 [2024-06-27 18:47:29,051 INFO L175 Difference]: Start difference. First operand has 363 places, 372 transitions, 5894 flow. Second operand 10 states and 199 transitions. [2024-06-27 18:47:29,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 410 transitions, 7044 flow [2024-06-27 18:47:30,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 410 transitions, 6907 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:30,014 INFO L231 Difference]: Finished difference. Result has 364 places, 373 transitions, 6051 flow [2024-06-27 18:47:30,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5757, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6051, PETRI_PLACES=364, PETRI_TRANSITIONS=373} [2024-06-27 18:47:30,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-27 18:47:30,015 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 373 transitions, 6051 flow [2024-06-27 18:47:30,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:30,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:30,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:30,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:47:30,016 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:30,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash -660770485, now seen corresponding path program 12 times [2024-06-27 18:47:30,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:30,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739563396] [2024-06-27 18:47:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:30,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:31,023 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 18:47:31,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:31,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739563396] [2024-06-27 18:47:31,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739563396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:31,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:31,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:31,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373800880] [2024-06-27 18:47:31,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:31,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:31,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:31,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 373 transitions, 6051 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:31,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:31,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:31,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:32,517 INFO L124 PetriNetUnfolderBase]: 2739/5409 cut-off events. [2024-06-27 18:47:32,517 INFO L125 PetriNetUnfolderBase]: For 132024/132043 co-relation queries the response was YES. [2024-06-27 18:47:32,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36572 conditions, 5409 events. 2739/5409 cut-off events. For 132024/132043 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44349 event pairs, 757 based on Foata normal form. 21/5329 useless extension candidates. Maximal degree in co-relation 36395. Up to 3884 conditions per place. [2024-06-27 18:47:32,599 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 264 selfloop transitions, 134 changer transitions 0/408 dead transitions. [2024-06-27 18:47:32,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 408 transitions, 7135 flow [2024-06-27 18:47:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 18:47:32,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 18:47:32,601 INFO L175 Difference]: Start difference. First operand has 364 places, 373 transitions, 6051 flow. Second operand 10 states and 195 transitions. [2024-06-27 18:47:32,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 408 transitions, 7135 flow [2024-06-27 18:47:33,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 408 transitions, 6863 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:33,641 INFO L231 Difference]: Finished difference. Result has 366 places, 374 transitions, 6081 flow [2024-06-27 18:47:33,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5779, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6081, PETRI_PLACES=366, PETRI_TRANSITIONS=374} [2024-06-27 18:47:33,642 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-27 18:47:33,642 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 374 transitions, 6081 flow [2024-06-27 18:47:33,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:33,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:33,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:33,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:47:33,643 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:33,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1491713755, now seen corresponding path program 13 times [2024-06-27 18:47:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:33,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686180827] [2024-06-27 18:47:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:33,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:34,715 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 18:47:34,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:34,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686180827] [2024-06-27 18:47:34,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686180827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:34,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:34,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48713068] [2024-06-27 18:47:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:34,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:34,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:34,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 374 transitions, 6081 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:34,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:34,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:34,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:36,287 INFO L124 PetriNetUnfolderBase]: 2807/5503 cut-off events. [2024-06-27 18:47:36,287 INFO L125 PetriNetUnfolderBase]: For 163741/163764 co-relation queries the response was YES. [2024-06-27 18:47:36,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37513 conditions, 5503 events. 2807/5503 cut-off events. For 163741/163764 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 45072 event pairs, 879 based on Foata normal form. 33/5441 useless extension candidates. Maximal degree in co-relation 37335. Up to 4434 conditions per place. [2024-06-27 18:47:36,368 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 316 selfloop transitions, 85 changer transitions 0/411 dead transitions. [2024-06-27 18:47:36,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 411 transitions, 7213 flow [2024-06-27 18:47:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:47:36,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216216216216216 [2024-06-27 18:47:36,370 INFO L175 Difference]: Start difference. First operand has 366 places, 374 transitions, 6081 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:47:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 411 transitions, 7213 flow [2024-06-27 18:47:37,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 411 transitions, 6921 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:37,480 INFO L231 Difference]: Finished difference. Result has 368 places, 375 transitions, 5998 flow [2024-06-27 18:47:37,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5998, PETRI_PLACES=368, PETRI_TRANSITIONS=375} [2024-06-27 18:47:37,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 18:47:37,480 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 375 transitions, 5998 flow [2024-06-27 18:47:37,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:37,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:37,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:37,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:47:37,481 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:37,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:37,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1343280295, now seen corresponding path program 14 times [2024-06-27 18:47:37,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:37,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831397021] [2024-06-27 18:47:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:37,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:38,333 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 18:47:38,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831397021] [2024-06-27 18:47:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831397021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:38,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:38,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:38,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40658001] [2024-06-27 18:47:38,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:38,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:38,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:38,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:38,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:38,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:38,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 375 transitions, 5998 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:38,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:38,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:38,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:39,860 INFO L124 PetriNetUnfolderBase]: 2823/5611 cut-off events. [2024-06-27 18:47:39,860 INFO L125 PetriNetUnfolderBase]: For 141768/141787 co-relation queries the response was YES. [2024-06-27 18:47:39,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37621 conditions, 5611 events. 2823/5611 cut-off events. For 141768/141787 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 46830 event pairs, 1116 based on Foata normal form. 21/5526 useless extension candidates. Maximal degree in co-relation 37442. Up to 4854 conditions per place. [2024-06-27 18:47:39,943 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 382 selfloop transitions, 19 changer transitions 0/411 dead transitions. [2024-06-27 18:47:39,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 411 transitions, 7104 flow [2024-06-27 18:47:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:47:39,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:47:39,944 INFO L175 Difference]: Start difference. First operand has 368 places, 375 transitions, 5998 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:47:39,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 411 transitions, 7104 flow [2024-06-27 18:47:40,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 411 transitions, 6919 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:40,967 INFO L231 Difference]: Finished difference. Result has 370 places, 376 transitions, 5889 flow [2024-06-27 18:47:40,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5813, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5889, PETRI_PLACES=370, PETRI_TRANSITIONS=376} [2024-06-27 18:47:40,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-27 18:47:40,968 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 376 transitions, 5889 flow [2024-06-27 18:47:40,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:40,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:40,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:40,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:47:40,969 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:40,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1877729791, now seen corresponding path program 15 times [2024-06-27 18:47:40,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:40,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981236673] [2024-06-27 18:47:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:40,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:42,069 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 18:47:42,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:42,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981236673] [2024-06-27 18:47:42,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981236673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:42,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:42,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:42,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300462839] [2024-06-27 18:47:42,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:42,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:42,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:42,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:42,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:42,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 376 transitions, 5889 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:42,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:42,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:42,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:43,570 INFO L124 PetriNetUnfolderBase]: 2839/5561 cut-off events. [2024-06-27 18:47:43,570 INFO L125 PetriNetUnfolderBase]: For 141827/141846 co-relation queries the response was YES. [2024-06-27 18:47:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37569 conditions, 5561 events. 2839/5561 cut-off events. For 141827/141846 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 45583 event pairs, 745 based on Foata normal form. 21/5491 useless extension candidates. Maximal degree in co-relation 37389. Up to 4263 conditions per place. [2024-06-27 18:47:43,658 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 293 selfloop transitions, 109 changer transitions 0/412 dead transitions. [2024-06-27 18:47:43,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 412 transitions, 6989 flow [2024-06-27 18:47:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:47:43,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 18:47:43,660 INFO L175 Difference]: Start difference. First operand has 370 places, 376 transitions, 5889 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:47:43,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 412 transitions, 6989 flow [2024-06-27 18:47:45,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 412 transitions, 6923 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:45,121 INFO L231 Difference]: Finished difference. Result has 372 places, 377 transitions, 6081 flow [2024-06-27 18:47:45,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5823, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6081, PETRI_PLACES=372, PETRI_TRANSITIONS=377} [2024-06-27 18:47:45,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 331 predicate places. [2024-06-27 18:47:45,122 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 377 transitions, 6081 flow [2024-06-27 18:47:45,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:45,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:45,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:45,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:47:45,123 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:45,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1235213245, now seen corresponding path program 16 times [2024-06-27 18:47:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:45,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107215191] [2024-06-27 18:47:45,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:45,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:46,220 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 18:47:46,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107215191] [2024-06-27 18:47:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107215191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:46,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:46,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:46,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507652335] [2024-06-27 18:47:46,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:46,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:46,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:46,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 377 transitions, 6081 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:46,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:46,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:48,060 INFO L124 PetriNetUnfolderBase]: 2907/5679 cut-off events. [2024-06-27 18:47:48,060 INFO L125 PetriNetUnfolderBase]: For 178280/178303 co-relation queries the response was YES. [2024-06-27 18:47:48,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38907 conditions, 5679 events. 2907/5679 cut-off events. For 178280/178303 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 46695 event pairs, 910 based on Foata normal form. 33/5612 useless extension candidates. Maximal degree in co-relation 38726. Up to 4637 conditions per place. [2024-06-27 18:47:48,142 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 84 changer transitions 0/420 dead transitions. [2024-06-27 18:47:48,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 420 transitions, 7259 flow [2024-06-27 18:47:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-27 18:47:48,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:47:48,144 INFO L175 Difference]: Start difference. First operand has 372 places, 377 transitions, 6081 flow. Second operand 12 states and 228 transitions. [2024-06-27 18:47:48,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 420 transitions, 7259 flow [2024-06-27 18:47:49,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 420 transitions, 7011 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:47:49,377 INFO L231 Difference]: Finished difference. Result has 377 places, 377 transitions, 6010 flow [2024-06-27 18:47:49,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6010, PETRI_PLACES=377, PETRI_TRANSITIONS=377} [2024-06-27 18:47:49,392 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 18:47:49,393 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 377 transitions, 6010 flow [2024-06-27 18:47:49,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:49,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:49,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:49,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:47:49,393 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:49,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash -382153187, now seen corresponding path program 17 times [2024-06-27 18:47:49,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:49,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891013891] [2024-06-27 18:47:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:50,449 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 18:47:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891013891] [2024-06-27 18:47:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891013891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:50,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:50,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:50,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276114532] [2024-06-27 18:47:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:50,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:50,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 377 transitions, 6010 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:50,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:50,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:50,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:52,159 INFO L124 PetriNetUnfolderBase]: 3021/5885 cut-off events. [2024-06-27 18:47:52,160 INFO L125 PetriNetUnfolderBase]: For 203299/203322 co-relation queries the response was YES. [2024-06-27 18:47:52,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40572 conditions, 5885 events. 3021/5885 cut-off events. For 203299/203322 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 48741 event pairs, 936 based on Foata normal form. 31/5822 useless extension candidates. Maximal degree in co-relation 40390. Up to 4547 conditions per place. [2024-06-27 18:47:52,247 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 330 selfloop transitions, 81 changer transitions 0/421 dead transitions. [2024-06-27 18:47:52,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 421 transitions, 7406 flow [2024-06-27 18:47:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:47:52,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257985257985258 [2024-06-27 18:47:52,249 INFO L175 Difference]: Start difference. First operand has 377 places, 377 transitions, 6010 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:47:52,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 421 transitions, 7406 flow [2024-06-27 18:47:53,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 421 transitions, 7153 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 18:47:53,580 INFO L231 Difference]: Finished difference. Result has 377 places, 377 transitions, 5922 flow [2024-06-27 18:47:53,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5757, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5922, PETRI_PLACES=377, PETRI_TRANSITIONS=377} [2024-06-27 18:47:53,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 18:47:53,581 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 377 transitions, 5922 flow [2024-06-27 18:47:53,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:53,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:53,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:53,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:47:53,582 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:53,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1142845755, now seen corresponding path program 18 times [2024-06-27 18:47:53,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:53,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29894866] [2024-06-27 18:47:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:53,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:54,415 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 18:47:54,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29894866] [2024-06-27 18:47:54,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29894866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:54,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:54,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:54,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260432119] [2024-06-27 18:47:54,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:54,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:54,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:54,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:54,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:54,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 377 transitions, 5922 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:54,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:54,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:54,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:56,105 INFO L124 PetriNetUnfolderBase]: 3073/5947 cut-off events. [2024-06-27 18:47:56,105 INFO L125 PetriNetUnfolderBase]: For 206643/206667 co-relation queries the response was YES. [2024-06-27 18:47:56,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41056 conditions, 5947 events. 3073/5947 cut-off events. For 206643/206667 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 49141 event pairs, 993 based on Foata normal form. 32/5902 useless extension candidates. Maximal degree in co-relation 40873. Up to 4935 conditions per place. [2024-06-27 18:47:56,200 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 352 selfloop transitions, 58 changer transitions 0/420 dead transitions. [2024-06-27 18:47:56,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 420 transitions, 7188 flow [2024-06-27 18:47:56,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:47:56,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 18:47:56,202 INFO L175 Difference]: Start difference. First operand has 377 places, 377 transitions, 5922 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:47:56,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 420 transitions, 7188 flow [2024-06-27 18:47:57,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 420 transitions, 7023 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:57,837 INFO L231 Difference]: Finished difference. Result has 379 places, 378 transitions, 5904 flow [2024-06-27 18:47:57,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5761, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5904, PETRI_PLACES=379, PETRI_TRANSITIONS=378} [2024-06-27 18:47:57,838 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-27 18:47:57,838 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 378 transitions, 5904 flow [2024-06-27 18:47:57,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:57,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:57,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:57,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:47:57,839 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:57,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1137339225, now seen corresponding path program 19 times [2024-06-27 18:47:57,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:57,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713928059] [2024-06-27 18:47:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:57,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:58,637 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 18:47:58,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713928059] [2024-06-27 18:47:58,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713928059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:58,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:58,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488808714] [2024-06-27 18:47:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:58,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:58,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:58,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:47:58,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 378 transitions, 5904 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:47:58,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:58,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:47:58,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:00,239 INFO L124 PetriNetUnfolderBase]: 3063/5929 cut-off events. [2024-06-27 18:48:00,240 INFO L125 PetriNetUnfolderBase]: For 178249/178273 co-relation queries the response was YES. [2024-06-27 18:48:00,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40201 conditions, 5929 events. 3063/5929 cut-off events. For 178249/178273 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 48907 event pairs, 999 based on Foata normal form. 32/5884 useless extension candidates. Maximal degree in co-relation 40016. Up to 5099 conditions per place. [2024-06-27 18:48:00,329 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 352 selfloop transitions, 51 changer transitions 0/413 dead transitions. [2024-06-27 18:48:00,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 413 transitions, 7012 flow [2024-06-27 18:48:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:48:00,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:48:00,330 INFO L175 Difference]: Start difference. First operand has 379 places, 378 transitions, 5904 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:48:00,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 413 transitions, 7012 flow [2024-06-27 18:48:01,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 413 transitions, 6909 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:48:01,741 INFO L231 Difference]: Finished difference. Result has 382 places, 378 transitions, 5906 flow [2024-06-27 18:48:01,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5801, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5906, PETRI_PLACES=382, PETRI_TRANSITIONS=378} [2024-06-27 18:48:01,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-27 18:48:01,741 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 378 transitions, 5906 flow [2024-06-27 18:48:01,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:48:01,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:01,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:01,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:48:01,742 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:01,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:01,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1058470489, now seen corresponding path program 4 times [2024-06-27 18:48:01,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:01,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257046964] [2024-06-27 18:48:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:01,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:03,249 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 18:48:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257046964] [2024-06-27 18:48:03,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257046964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:03,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899120468] [2024-06-27 18:48:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:03,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:03,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:03,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 378 transitions, 5906 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:03,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:03,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:03,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:05,182 INFO L124 PetriNetUnfolderBase]: 3161/6277 cut-off events. [2024-06-27 18:48:05,182 INFO L125 PetriNetUnfolderBase]: For 211281/211300 co-relation queries the response was YES. [2024-06-27 18:48:05,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42421 conditions, 6277 events. 3161/6277 cut-off events. For 211281/211300 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 53370 event pairs, 1270 based on Foata normal form. 25/6196 useless extension candidates. Maximal degree in co-relation 42235. Up to 5162 conditions per place. [2024-06-27 18:48:05,277 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 396 selfloop transitions, 25 changer transitions 0/431 dead transitions. [2024-06-27 18:48:05,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 431 transitions, 7396 flow [2024-06-27 18:48:05,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-27 18:48:05,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:48:05,278 INFO L175 Difference]: Start difference. First operand has 382 places, 378 transitions, 5906 flow. Second operand 12 states and 228 transitions. [2024-06-27 18:48:05,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 431 transitions, 7396 flow [2024-06-27 18:48:06,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 431 transitions, 7295 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:06,910 INFO L231 Difference]: Finished difference. Result has 386 places, 378 transitions, 5858 flow [2024-06-27 18:48:06,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5805, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5858, PETRI_PLACES=386, PETRI_TRANSITIONS=378} [2024-06-27 18:48:06,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-27 18:48:06,911 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 378 transitions, 5858 flow [2024-06-27 18:48:06,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:06,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:06,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:06,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:48:06,911 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:06,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash -125437351, now seen corresponding path program 5 times [2024-06-27 18:48:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:06,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130599386] [2024-06-27 18:48:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:06,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:08,512 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 18:48:08,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:08,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130599386] [2024-06-27 18:48:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130599386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:08,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:08,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888346765] [2024-06-27 18:48:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:08,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:08,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:08,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:08,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 378 transitions, 5858 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:08,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:08,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:08,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:10,655 INFO L124 PetriNetUnfolderBase]: 3213/6349 cut-off events. [2024-06-27 18:48:10,655 INFO L125 PetriNetUnfolderBase]: For 222963/222986 co-relation queries the response was YES. [2024-06-27 18:48:10,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42997 conditions, 6349 events. 3213/6349 cut-off events. For 222963/222986 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 53799 event pairs, 1090 based on Foata normal form. 31/6268 useless extension candidates. Maximal degree in co-relation 42810. Up to 5285 conditions per place. [2024-06-27 18:48:10,754 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 327 selfloop transitions, 80 changer transitions 0/417 dead transitions. [2024-06-27 18:48:10,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 417 transitions, 6966 flow [2024-06-27 18:48:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 18:48:10,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110565110565111 [2024-06-27 18:48:10,756 INFO L175 Difference]: Start difference. First operand has 386 places, 378 transitions, 5858 flow. Second operand 11 states and 208 transitions. [2024-06-27 18:48:10,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 417 transitions, 6966 flow [2024-06-27 18:48:12,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 417 transitions, 6916 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:48:12,426 INFO L231 Difference]: Finished difference. Result has 387 places, 378 transitions, 5972 flow [2024-06-27 18:48:12,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5808, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5972, PETRI_PLACES=387, PETRI_TRANSITIONS=378} [2024-06-27 18:48:12,427 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 18:48:12,427 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 378 transitions, 5972 flow [2024-06-27 18:48:12,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:12,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:12,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:12,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:48:12,428 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:12,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:12,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1501244891, now seen corresponding path program 6 times [2024-06-27 18:48:12,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:12,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968178172] [2024-06-27 18:48:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:12,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:13,655 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 18:48:13,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968178172] [2024-06-27 18:48:13,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968178172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:13,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:13,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:13,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185437081] [2024-06-27 18:48:13,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:13,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:13,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:13,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:13,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:13,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 378 transitions, 5972 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:13,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:13,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:13,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:15,491 INFO L124 PetriNetUnfolderBase]: 3259/6373 cut-off events. [2024-06-27 18:48:15,491 INFO L125 PetriNetUnfolderBase]: For 185643/185668 co-relation queries the response was YES. [2024-06-27 18:48:15,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42747 conditions, 6373 events. 3259/6373 cut-off events. For 185643/185668 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 53636 event pairs, 995 based on Foata normal form. 31/6310 useless extension candidates. Maximal degree in co-relation 42560. Up to 4825 conditions per place. [2024-06-27 18:48:15,596 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 303 selfloop transitions, 109 changer transitions 0/422 dead transitions. [2024-06-27 18:48:15,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 422 transitions, 7170 flow [2024-06-27 18:48:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:48:15,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208845208845209 [2024-06-27 18:48:15,598 INFO L175 Difference]: Start difference. First operand has 387 places, 378 transitions, 5972 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:48:15,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 422 transitions, 7170 flow [2024-06-27 18:48:17,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 422 transitions, 7012 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:17,126 INFO L231 Difference]: Finished difference. Result has 389 places, 378 transitions, 6035 flow [2024-06-27 18:48:17,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5814, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6035, PETRI_PLACES=389, PETRI_TRANSITIONS=378} [2024-06-27 18:48:17,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 18:48:17,127 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 378 transitions, 6035 flow [2024-06-27 18:48:17,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:17,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:17,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:17,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:48:17,128 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:17,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash 687572539, now seen corresponding path program 7 times [2024-06-27 18:48:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:17,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457532508] [2024-06-27 18:48:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:17,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:18,205 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 18:48:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:18,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457532508] [2024-06-27 18:48:18,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457532508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:18,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:18,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762567125] [2024-06-27 18:48:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:18,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:18,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:18,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 378 transitions, 6035 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 18:48:18,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:18,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:18,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:20,120 INFO L124 PetriNetUnfolderBase]: 3389/6830 cut-off events. [2024-06-27 18:48:20,120 INFO L125 PetriNetUnfolderBase]: For 230172/230187 co-relation queries the response was YES. [2024-06-27 18:48:20,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45477 conditions, 6830 events. 3389/6830 cut-off events. For 230172/230187 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 59818 event pairs, 1485 based on Foata normal form. 21/6724 useless extension candidates. Maximal degree in co-relation 45289. Up to 5638 conditions per place. [2024-06-27 18:48:20,232 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 407 selfloop transitions, 25 changer transitions 0/442 dead transitions. [2024-06-27 18:48:20,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 442 transitions, 7682 flow [2024-06-27 18:48:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:20,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:48:20,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-27 18:48:20,234 INFO L175 Difference]: Start difference. First operand has 389 places, 378 transitions, 6035 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:48:20,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 442 transitions, 7682 flow [2024-06-27 18:48:22,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 442 transitions, 7483 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:48:22,051 INFO L231 Difference]: Finished difference. Result has 398 places, 396 transitions, 6167 flow [2024-06-27 18:48:22,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5844, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6167, PETRI_PLACES=398, PETRI_TRANSITIONS=396} [2024-06-27 18:48:22,052 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-27 18:48:22,052 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 396 transitions, 6167 flow [2024-06-27 18:48:22,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 18:48:22,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:22,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:22,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:48:22,053 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:22,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:22,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1990562145, now seen corresponding path program 8 times [2024-06-27 18:48:22,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:22,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131391423] [2024-06-27 18:48:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:22,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:23,279 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 18:48:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:23,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131391423] [2024-06-27 18:48:23,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131391423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:23,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:23,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:23,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428337235] [2024-06-27 18:48:23,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:23,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:23,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:23,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:23,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 396 transitions, 6167 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:23,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:23,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:23,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:25,584 INFO L124 PetriNetUnfolderBase]: 3453/6968 cut-off events. [2024-06-27 18:48:25,584 INFO L125 PetriNetUnfolderBase]: For 256659/256674 co-relation queries the response was YES. [2024-06-27 18:48:25,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47111 conditions, 6968 events. 3453/6968 cut-off events. For 256659/256674 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 61302 event pairs, 1512 based on Foata normal form. 23/6860 useless extension candidates. Maximal degree in co-relation 46917. Up to 5848 conditions per place. [2024-06-27 18:48:25,691 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 396 selfloop transitions, 42 changer transitions 0/448 dead transitions. [2024-06-27 18:48:25,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 448 transitions, 7513 flow [2024-06-27 18:48:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:48:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:48:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 241 transitions. [2024-06-27 18:48:25,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501039501039501 [2024-06-27 18:48:25,692 INFO L175 Difference]: Start difference. First operand has 398 places, 396 transitions, 6167 flow. Second operand 13 states and 241 transitions. [2024-06-27 18:48:25,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 448 transitions, 7513 flow [2024-06-27 18:48:27,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 448 transitions, 7366 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:48:27,472 INFO L231 Difference]: Finished difference. Result has 406 places, 396 transitions, 6115 flow [2024-06-27 18:48:27,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6022, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6115, PETRI_PLACES=406, PETRI_TRANSITIONS=396} [2024-06-27 18:48:27,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-27 18:48:27,473 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 396 transitions, 6115 flow [2024-06-27 18:48:27,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:27,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:27,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:27,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:48:27,474 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:27,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash -405451331, now seen corresponding path program 9 times [2024-06-27 18:48:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:27,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259537960] [2024-06-27 18:48:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:27,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:28,783 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 18:48:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259537960] [2024-06-27 18:48:28,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259537960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:28,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:28,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:28,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489811738] [2024-06-27 18:48:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:28,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:28,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:28,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:28,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 396 transitions, 6115 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:28,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:28,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:28,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:31,049 INFO L124 PetriNetUnfolderBase]: 3502/7077 cut-off events. [2024-06-27 18:48:31,050 INFO L125 PetriNetUnfolderBase]: For 245557/245572 co-relation queries the response was YES. [2024-06-27 18:48:31,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46938 conditions, 7077 events. 3502/7077 cut-off events. For 245557/245572 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 62498 event pairs, 1527 based on Foata normal form. 23/6969 useless extension candidates. Maximal degree in co-relation 46745. Up to 5807 conditions per place. [2024-06-27 18:48:31,177 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 388 selfloop transitions, 40 changer transitions 0/438 dead transitions. [2024-06-27 18:48:31,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 438 transitions, 7347 flow [2024-06-27 18:48:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:48:31,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085995085995086 [2024-06-27 18:48:31,179 INFO L175 Difference]: Start difference. First operand has 406 places, 396 transitions, 6115 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:48:31,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 438 transitions, 7347 flow [2024-06-27 18:48:33,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 438 transitions, 7244 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-27 18:48:33,443 INFO L231 Difference]: Finished difference. Result has 404 places, 396 transitions, 6105 flow [2024-06-27 18:48:33,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6012, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6105, PETRI_PLACES=404, PETRI_TRANSITIONS=396} [2024-06-27 18:48:33,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 18:48:33,444 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 396 transitions, 6105 flow [2024-06-27 18:48:33,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:33,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:33,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:33,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:48:33,445 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:33,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2134445627, now seen corresponding path program 10 times [2024-06-27 18:48:33,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:33,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739599148] [2024-06-27 18:48:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:33,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:35,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739599148] [2024-06-27 18:48:35,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739599148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:35,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:35,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239549960] [2024-06-27 18:48:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:35,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:35,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:35,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:35,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 396 transitions, 6105 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:35,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:35,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:35,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:37,664 INFO L124 PetriNetUnfolderBase]: 3554/7080 cut-off events. [2024-06-27 18:48:37,665 INFO L125 PetriNetUnfolderBase]: For 250411/250430 co-relation queries the response was YES. [2024-06-27 18:48:37,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47444 conditions, 7080 events. 3554/7080 cut-off events. For 250411/250430 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 61777 event pairs, 1045 based on Foata normal form. 27/7002 useless extension candidates. Maximal degree in co-relation 47250. Up to 5615 conditions per place. [2024-06-27 18:48:37,773 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 316 selfloop transitions, 112 changer transitions 0/438 dead transitions. [2024-06-27 18:48:37,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 438 transitions, 7353 flow [2024-06-27 18:48:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 18:48:37,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233415233415234 [2024-06-27 18:48:37,775 INFO L175 Difference]: Start difference. First operand has 404 places, 396 transitions, 6105 flow. Second operand 11 states and 213 transitions. [2024-06-27 18:48:37,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 438 transitions, 7353 flow [2024-06-27 18:48:39,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 438 transitions, 7264 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 18:48:39,839 INFO L231 Difference]: Finished difference. Result has 404 places, 396 transitions, 6246 flow [2024-06-27 18:48:39,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6016, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6246, PETRI_PLACES=404, PETRI_TRANSITIONS=396} [2024-06-27 18:48:39,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 18:48:39,840 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 396 transitions, 6246 flow [2024-06-27 18:48:39,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:39,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:39,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:39,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:48:39,840 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:39,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash -533839427, now seen corresponding path program 11 times [2024-06-27 18:48:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:39,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556256986] [2024-06-27 18:48:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:39,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:41,036 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 18:48:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556256986] [2024-06-27 18:48:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556256986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:41,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:41,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638320490] [2024-06-27 18:48:41,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:41,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:41,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:41,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 396 transitions, 6246 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:41,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:41,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:41,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:43,194 INFO L124 PetriNetUnfolderBase]: 3601/7101 cut-off events. [2024-06-27 18:48:43,204 INFO L125 PetriNetUnfolderBase]: For 272111/272132 co-relation queries the response was YES. [2024-06-27 18:48:43,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49120 conditions, 7101 events. 3601/7101 cut-off events. For 272111/272132 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 61607 event pairs, 888 based on Foata normal form. 27/7036 useless extension candidates. Maximal degree in co-relation 48926. Up to 5131 conditions per place. [2024-06-27 18:48:43,321 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 289 selfloop transitions, 169 changer transitions 0/468 dead transitions. [2024-06-27 18:48:43,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 468 transitions, 8532 flow [2024-06-27 18:48:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-06-27 18:48:43,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536036036036036 [2024-06-27 18:48:43,322 INFO L175 Difference]: Start difference. First operand has 404 places, 396 transitions, 6246 flow. Second operand 12 states and 238 transitions. [2024-06-27 18:48:43,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 468 transitions, 8532 flow [2024-06-27 18:48:45,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 468 transitions, 8312 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:45,774 INFO L231 Difference]: Finished difference. Result has 412 places, 411 transitions, 7107 flow [2024-06-27 18:48:45,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6026, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7107, PETRI_PLACES=412, PETRI_TRANSITIONS=411} [2024-06-27 18:48:45,775 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-27 18:48:45,775 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 411 transitions, 7107 flow [2024-06-27 18:48:45,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:45,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:45,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:45,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:48:45,775 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:45,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash -799863137, now seen corresponding path program 12 times [2024-06-27 18:48:45,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:45,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903406179] [2024-06-27 18:48:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:47,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:47,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903406179] [2024-06-27 18:48:47,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903406179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:47,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:47,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:47,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452305221] [2024-06-27 18:48:47,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:47,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:47,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:47,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:47,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:47,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 411 transitions, 7107 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:47,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:47,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:47,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:49,238 INFO L124 PetriNetUnfolderBase]: 3639/7301 cut-off events. [2024-06-27 18:48:49,238 INFO L125 PetriNetUnfolderBase]: For 292117/292136 co-relation queries the response was YES. [2024-06-27 18:48:49,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50630 conditions, 7301 events. 3639/7301 cut-off events. For 292117/292136 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 64516 event pairs, 1128 based on Foata normal form. 33/7211 useless extension candidates. Maximal degree in co-relation 50430. Up to 5406 conditions per place. [2024-06-27 18:48:49,360 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 297 selfloop transitions, 146 changer transitions 0/453 dead transitions. [2024-06-27 18:48:49,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 453 transitions, 8389 flow [2024-06-27 18:48:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 18:48:49,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307125307125307 [2024-06-27 18:48:49,362 INFO L175 Difference]: Start difference. First operand has 412 places, 411 transitions, 7107 flow. Second operand 11 states and 216 transitions. [2024-06-27 18:48:49,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 453 transitions, 8389 flow [2024-06-27 18:48:51,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 453 transitions, 8024 flow, removed 175 selfloop flow, removed 2 redundant places. [2024-06-27 18:48:51,546 INFO L231 Difference]: Finished difference. Result has 421 places, 411 transitions, 7063 flow [2024-06-27 18:48:51,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6766, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7063, PETRI_PLACES=421, PETRI_TRANSITIONS=411} [2024-06-27 18:48:51,546 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-27 18:48:51,546 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 411 transitions, 7063 flow [2024-06-27 18:48:51,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:48:51,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:51,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:51,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:48:51,547 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:51,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1352515749, now seen corresponding path program 20 times [2024-06-27 18:48:51,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:51,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022007458] [2024-06-27 18:48:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:52,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:52,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022007458] [2024-06-27 18:48:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022007458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:52,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:52,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:52,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728131019] [2024-06-27 18:48:52,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:52,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:52,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:52,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 411 transitions, 7063 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:48:52,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:52,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:52,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:54,523 INFO L124 PetriNetUnfolderBase]: 3875/7899 cut-off events. [2024-06-27 18:48:54,524 INFO L125 PetriNetUnfolderBase]: For 264654/264669 co-relation queries the response was YES. [2024-06-27 18:48:54,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53559 conditions, 7899 events. 3875/7899 cut-off events. For 264654/264669 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 71613 event pairs, 1794 based on Foata normal form. 23/7753 useless extension candidates. Maximal degree in co-relation 53357. Up to 6499 conditions per place. [2024-06-27 18:48:54,691 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 415 selfloop transitions, 41 changer transitions 0/466 dead transitions. [2024-06-27 18:48:54,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 466 transitions, 8640 flow [2024-06-27 18:48:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:48:54,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085995085995086 [2024-06-27 18:48:54,692 INFO L175 Difference]: Start difference. First operand has 421 places, 411 transitions, 7063 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:48:54,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 466 transitions, 8640 flow [2024-06-27 18:48:56,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 466 transitions, 8351 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:56,916 INFO L231 Difference]: Finished difference. Result has 426 places, 425 transitions, 7224 flow [2024-06-27 18:48:56,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6774, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7224, PETRI_PLACES=426, PETRI_TRANSITIONS=425} [2024-06-27 18:48:56,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-27 18:48:56,917 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 425 transitions, 7224 flow [2024-06-27 18:48:56,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:48:56,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:56,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:56,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:48:56,918 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:56,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:56,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1478762235, now seen corresponding path program 21 times [2024-06-27 18:48:56,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:56,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182409524] [2024-06-27 18:48:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:56,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:57,708 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 18:48:57,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:57,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182409524] [2024-06-27 18:48:57,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182409524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:57,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:57,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:57,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409970399] [2024-06-27 18:48:57,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:57,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:57,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:57,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:57,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:57,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:48:57,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 425 transitions, 7224 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:48:57,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:57,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:48:57,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:00,077 INFO L124 PetriNetUnfolderBase]: 3985/8113 cut-off events. [2024-06-27 18:49:00,077 INFO L125 PetriNetUnfolderBase]: For 268350/268365 co-relation queries the response was YES. [2024-06-27 18:49:00,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54502 conditions, 8113 events. 3985/8113 cut-off events. For 268350/268365 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 73962 event pairs, 1803 based on Foata normal form. 23/7966 useless extension candidates. Maximal degree in co-relation 54296. Up to 6489 conditions per place. [2024-06-27 18:49:00,226 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 421 selfloop transitions, 41 changer transitions 0/472 dead transitions. [2024-06-27 18:49:00,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 472 transitions, 8574 flow [2024-06-27 18:49:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 18:49:00,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184275184275184 [2024-06-27 18:49:00,227 INFO L175 Difference]: Start difference. First operand has 426 places, 425 transitions, 7224 flow. Second operand 11 states and 211 transitions. [2024-06-27 18:49:00,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 472 transitions, 8574 flow [2024-06-27 18:49:02,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 472 transitions, 8530 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:49:02,565 INFO L231 Difference]: Finished difference. Result has 433 places, 427 transitions, 7294 flow [2024-06-27 18:49:02,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7180, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7294, PETRI_PLACES=433, PETRI_TRANSITIONS=427} [2024-06-27 18:49:02,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-27 18:49:02,566 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 427 transitions, 7294 flow [2024-06-27 18:49:02,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:49:02,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:02,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:02,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:49:02,566 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:02,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:02,567 INFO L85 PathProgramCache]: Analyzing trace with hash 659363967, now seen corresponding path program 22 times [2024-06-27 18:49:02,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:02,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592740089] [2024-06-27 18:49:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:03,556 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 18:49:03,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:03,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592740089] [2024-06-27 18:49:03,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592740089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:03,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:03,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:49:03,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479663384] [2024-06-27 18:49:03,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:03,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:49:03,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:49:03,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:49:03,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:03,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 427 transitions, 7294 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:49:03,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:03,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:03,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:06,303 INFO L124 PetriNetUnfolderBase]: 4205/8547 cut-off events. [2024-06-27 18:49:06,303 INFO L125 PetriNetUnfolderBase]: For 284736/284751 co-relation queries the response was YES. [2024-06-27 18:49:06,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57940 conditions, 8547 events. 4205/8547 cut-off events. For 284736/284751 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 78724 event pairs, 1905 based on Foata normal form. 23/8398 useless extension candidates. Maximal degree in co-relation 57732. Up to 6948 conditions per place. [2024-06-27 18:49:06,453 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 411 selfloop transitions, 59 changer transitions 0/480 dead transitions. [2024-06-27 18:49:06,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 480 transitions, 8857 flow [2024-06-27 18:49:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 18:49:06,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:49:06,455 INFO L175 Difference]: Start difference. First operand has 433 places, 427 transitions, 7294 flow. Second operand 11 states and 209 transitions. [2024-06-27 18:49:06,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 480 transitions, 8857 flow [2024-06-27 18:49:08,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 480 transitions, 8779 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:49:08,940 INFO L231 Difference]: Finished difference. Result has 439 places, 437 transitions, 7652 flow [2024-06-27 18:49:08,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7224, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7652, PETRI_PLACES=439, PETRI_TRANSITIONS=437} [2024-06-27 18:49:08,940 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-27 18:49:08,940 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 437 transitions, 7652 flow [2024-06-27 18:49:08,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:49:08,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:08,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:08,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:49:08,941 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:08,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:08,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1187528453, now seen corresponding path program 23 times [2024-06-27 18:49:08,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:08,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531551580] [2024-06-27 18:49:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:08,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:10,027 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 18:49:10,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:10,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531551580] [2024-06-27 18:49:10,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531551580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:10,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:10,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:49:10,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123116981] [2024-06-27 18:49:10,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:10,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:49:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:49:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:49:10,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:10,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 437 transitions, 7652 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:49:10,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:10,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:10,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:12,779 INFO L124 PetriNetUnfolderBase]: 4525/9140 cut-off events. [2024-06-27 18:49:12,779 INFO L125 PetriNetUnfolderBase]: For 292788/292807 co-relation queries the response was YES. [2024-06-27 18:49:12,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62213 conditions, 9140 events. 4525/9140 cut-off events. For 292788/292807 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 84829 event pairs, 1781 based on Foata normal form. 27/8996 useless extension candidates. Maximal degree in co-relation 62001. Up to 6040 conditions per place. [2024-06-27 18:49:12,935 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 389 selfloop transitions, 111 changer transitions 0/510 dead transitions. [2024-06-27 18:49:12,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 510 transitions, 9648 flow [2024-06-27 18:49:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:49:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:49:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 18:49:12,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351351351351351 [2024-06-27 18:49:12,937 INFO L175 Difference]: Start difference. First operand has 439 places, 437 transitions, 7652 flow. Second operand 10 states and 198 transitions. [2024-06-27 18:49:12,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 510 transitions, 9648 flow [2024-06-27 18:49:16,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 510 transitions, 9551 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:49:16,233 INFO L231 Difference]: Finished difference. Result has 445 places, 461 transitions, 8416 flow [2024-06-27 18:49:16,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7555, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8416, PETRI_PLACES=445, PETRI_TRANSITIONS=461} [2024-06-27 18:49:16,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 18:49:16,234 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 461 transitions, 8416 flow [2024-06-27 18:49:16,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:49:16,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:16,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:16,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:49:16,235 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:16,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1791218504, now seen corresponding path program 1 times [2024-06-27 18:49:16,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:16,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58780087] [2024-06-27 18:49:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:16,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:16,283 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 18:49:16,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58780087] [2024-06-27 18:49:16,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58780087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:16,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:16,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:49:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451598006] [2024-06-27 18:49:16,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:16,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:49:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:49:16,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:49:16,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 18:49:16,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 461 transitions, 8416 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:49:16,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:16,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 18:49:16,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:19,005 INFO L124 PetriNetUnfolderBase]: 3788/9491 cut-off events. [2024-06-27 18:49:19,006 INFO L125 PetriNetUnfolderBase]: For 237101/237114 co-relation queries the response was YES. [2024-06-27 18:49:19,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54249 conditions, 9491 events. 3788/9491 cut-off events. For 237101/237114 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 99819 event pairs, 654 based on Foata normal form. 558/9542 useless extension candidates. Maximal degree in co-relation 54048. Up to 4310 conditions per place. [2024-06-27 18:49:19,173 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 199 selfloop transitions, 117 changer transitions 1/393 dead transitions. [2024-06-27 18:49:19,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 393 transitions, 7672 flow [2024-06-27 18:49:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:49:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:49:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 18:49:19,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-27 18:49:19,174 INFO L175 Difference]: Start difference. First operand has 445 places, 461 transitions, 8416 flow. Second operand 4 states and 103 transitions. [2024-06-27 18:49:19,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 393 transitions, 7672 flow [2024-06-27 18:49:21,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 393 transitions, 6048 flow, removed 35 selfloop flow, removed 72 redundant places. [2024-06-27 18:49:21,460 INFO L231 Difference]: Finished difference. Result has 377 places, 344 transitions, 5306 flow [2024-06-27 18:49:21,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4836, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5306, PETRI_PLACES=377, PETRI_TRANSITIONS=344} [2024-06-27 18:49:21,461 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 18:49:21,461 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 344 transitions, 5306 flow [2024-06-27 18:49:21,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:49:21,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:21,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:21,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:49:21,462 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:21,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash -173758565, now seen corresponding path program 1 times [2024-06-27 18:49:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741788464] [2024-06-27 18:49:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:21,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:23,237 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 18:49:23,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741788464] [2024-06-27 18:49:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741788464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:23,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:23,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669732037] [2024-06-27 18:49:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:23,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:23,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 344 transitions, 5306 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:23,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:23,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:23,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:25,556 INFO L124 PetriNetUnfolderBase]: 3601/8289 cut-off events. [2024-06-27 18:49:25,557 INFO L125 PetriNetUnfolderBase]: For 158373/158375 co-relation queries the response was YES. [2024-06-27 18:49:25,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41097 conditions, 8289 events. 3601/8289 cut-off events. For 158373/158375 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 80750 event pairs, 2192 based on Foata normal form. 8/7828 useless extension candidates. Maximal degree in co-relation 40932. Up to 6483 conditions per place. [2024-06-27 18:49:25,671 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 300 selfloop transitions, 64 changer transitions 0/374 dead transitions. [2024-06-27 18:49:25,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 374 transitions, 6206 flow [2024-06-27 18:49:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:49:25,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:49:25,673 INFO L175 Difference]: Start difference. First operand has 377 places, 344 transitions, 5306 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:49:25,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 374 transitions, 6206 flow [2024-06-27 18:49:27,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 374 transitions, 5829 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:49:27,039 INFO L231 Difference]: Finished difference. Result has 382 places, 344 transitions, 5068 flow [2024-06-27 18:49:27,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4937, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5068, PETRI_PLACES=382, PETRI_TRANSITIONS=344} [2024-06-27 18:49:27,040 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-27 18:49:27,040 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 344 transitions, 5068 flow [2024-06-27 18:49:27,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:27,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:27,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:27,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:49:27,041 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:27,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash -412592301, now seen corresponding path program 2 times [2024-06-27 18:49:27,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:27,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27202797] [2024-06-27 18:49:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:27,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:29,044 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 18:49:29,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:29,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27202797] [2024-06-27 18:49:29,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27202797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:29,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:29,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973222199] [2024-06-27 18:49:29,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:29,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:29,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:29,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 344 transitions, 5068 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:29,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:29,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:29,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:31,445 INFO L124 PetriNetUnfolderBase]: 3637/8337 cut-off events. [2024-06-27 18:49:31,445 INFO L125 PetriNetUnfolderBase]: For 156873/156875 co-relation queries the response was YES. [2024-06-27 18:49:31,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40000 conditions, 8337 events. 3637/8337 cut-off events. For 156873/156875 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 81253 event pairs, 2228 based on Foata normal form. 8/7877 useless extension candidates. Maximal degree in co-relation 39836. Up to 6527 conditions per place. [2024-06-27 18:49:31,557 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 301 selfloop transitions, 63 changer transitions 0/374 dead transitions. [2024-06-27 18:49:31,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 374 transitions, 5960 flow [2024-06-27 18:49:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:49:31,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:49:31,559 INFO L175 Difference]: Start difference. First operand has 382 places, 344 transitions, 5068 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:49:31,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 374 transitions, 5960 flow [2024-06-27 18:49:32,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 374 transitions, 5823 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:32,863 INFO L231 Difference]: Finished difference. Result has 384 places, 344 transitions, 5061 flow [2024-06-27 18:49:32,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4931, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5061, PETRI_PLACES=384, PETRI_TRANSITIONS=344} [2024-06-27 18:49:32,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-27 18:49:32,865 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 344 transitions, 5061 flow [2024-06-27 18:49:32,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:32,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:32,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:32,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:49:32,874 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:32,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash -412765281, now seen corresponding path program 3 times [2024-06-27 18:49:32,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:32,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133950131] [2024-06-27 18:49:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:32,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:34,113 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 18:49:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133950131] [2024-06-27 18:49:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133950131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:34,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:34,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:34,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433141508] [2024-06-27 18:49:34,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:34,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:34,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:34,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:34,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 344 transitions, 5061 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:34,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:34,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:34,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:36,349 INFO L124 PetriNetUnfolderBase]: 3673/8401 cut-off events. [2024-06-27 18:49:36,349 INFO L125 PetriNetUnfolderBase]: For 158546/158548 co-relation queries the response was YES. [2024-06-27 18:49:36,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40240 conditions, 8401 events. 3673/8401 cut-off events. For 158546/158548 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 81926 event pairs, 2228 based on Foata normal form. 8/7945 useless extension candidates. Maximal degree in co-relation 40075. Up to 6537 conditions per place. [2024-06-27 18:49:36,453 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 305 selfloop transitions, 63 changer transitions 0/378 dead transitions. [2024-06-27 18:49:36,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 378 transitions, 5981 flow [2024-06-27 18:49:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:49:36,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 18:49:36,454 INFO L175 Difference]: Start difference. First operand has 384 places, 344 transitions, 5061 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:49:36,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 378 transitions, 5981 flow [2024-06-27 18:49:37,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 378 transitions, 5828 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:37,784 INFO L231 Difference]: Finished difference. Result has 385 places, 344 transitions, 5037 flow [2024-06-27 18:49:37,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4908, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5037, PETRI_PLACES=385, PETRI_TRANSITIONS=344} [2024-06-27 18:49:37,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-27 18:49:37,785 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 344 transitions, 5037 flow [2024-06-27 18:49:37,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:37,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:37,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:37,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:49:37,785 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:37,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:37,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1405842129, now seen corresponding path program 4 times [2024-06-27 18:49:37,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:37,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379421049] [2024-06-27 18:49:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:37,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:39,114 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 18:49:39,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:39,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379421049] [2024-06-27 18:49:39,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379421049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:39,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:39,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:39,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300603068] [2024-06-27 18:49:39,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:39,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:39,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:39,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:39,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:39,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:39,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 344 transitions, 5037 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:39,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:39,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:39,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:41,405 INFO L124 PetriNetUnfolderBase]: 3709/8488 cut-off events. [2024-06-27 18:49:41,405 INFO L125 PetriNetUnfolderBase]: For 159937/159939 co-relation queries the response was YES. [2024-06-27 18:49:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40516 conditions, 8488 events. 3709/8488 cut-off events. For 159937/159939 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 82953 event pairs, 2297 based on Foata normal form. 8/8019 useless extension candidates. Maximal degree in co-relation 40350. Up to 6595 conditions per place. [2024-06-27 18:49:41,537 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 272 selfloop transitions, 89 changer transitions 0/371 dead transitions. [2024-06-27 18:49:41,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 371 transitions, 5907 flow [2024-06-27 18:49:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:49:41,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:49:41,539 INFO L175 Difference]: Start difference. First operand has 385 places, 344 transitions, 5037 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:49:41,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 371 transitions, 5907 flow [2024-06-27 18:49:43,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 371 transitions, 5782 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:43,146 INFO L231 Difference]: Finished difference. Result has 387 places, 344 transitions, 5093 flow [2024-06-27 18:49:43,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4912, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5093, PETRI_PLACES=387, PETRI_TRANSITIONS=344} [2024-06-27 18:49:43,146 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 18:49:43,146 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 344 transitions, 5093 flow [2024-06-27 18:49:43,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:43,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:43,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:43,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:49:43,147 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:43,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash 967372217, now seen corresponding path program 5 times [2024-06-27 18:49:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:43,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073953162] [2024-06-27 18:49:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:44,856 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 18:49:44,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:44,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073953162] [2024-06-27 18:49:44,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073953162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:44,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:44,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:44,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984910629] [2024-06-27 18:49:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:44,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:44,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:44,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:44,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:44,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 344 transitions, 5093 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:44,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:44,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:44,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:47,231 INFO L124 PetriNetUnfolderBase]: 3745/8560 cut-off events. [2024-06-27 18:49:47,231 INFO L125 PetriNetUnfolderBase]: For 161915/161917 co-relation queries the response was YES. [2024-06-27 18:49:47,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40838 conditions, 8560 events. 3745/8560 cut-off events. For 161915/161917 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 83808 event pairs, 2298 based on Foata normal form. 8/8092 useless extension candidates. Maximal degree in co-relation 40671. Up to 6582 conditions per place. [2024-06-27 18:49:47,358 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 272 selfloop transitions, 93 changer transitions 0/375 dead transitions. [2024-06-27 18:49:47,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 375 transitions, 5991 flow [2024-06-27 18:49:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:49:47,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:49:47,359 INFO L175 Difference]: Start difference. First operand has 387 places, 344 transitions, 5093 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:49:47,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 375 transitions, 5991 flow [2024-06-27 18:49:49,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 375 transitions, 5800 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:49:49,066 INFO L231 Difference]: Finished difference. Result has 387 places, 344 transitions, 5091 flow [2024-06-27 18:49:49,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5091, PETRI_PLACES=387, PETRI_TRANSITIONS=344} [2024-06-27 18:49:49,067 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 18:49:49,067 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 344 transitions, 5091 flow [2024-06-27 18:49:49,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:49,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:49,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:49,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:49:49,067 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:49,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash -99692641, now seen corresponding path program 6 times [2024-06-27 18:49:49,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:49,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304666567] [2024-06-27 18:49:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:49,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:50,882 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 18:49:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304666567] [2024-06-27 18:49:50,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304666567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:50,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:50,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538588445] [2024-06-27 18:49:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:50,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:50,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:50,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 344 transitions, 5091 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:50,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:50,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:50,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:53,239 INFO L124 PetriNetUnfolderBase]: 3781/8650 cut-off events. [2024-06-27 18:49:53,239 INFO L125 PetriNetUnfolderBase]: For 163200/163202 co-relation queries the response was YES. [2024-06-27 18:49:53,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41180 conditions, 8650 events. 3781/8650 cut-off events. For 163200/163202 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 84950 event pairs, 2496 based on Foata normal form. 8/8177 useless extension candidates. Maximal degree in co-relation 41012. Up to 6941 conditions per place. [2024-06-27 18:49:53,359 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 344 selfloop transitions, 18 changer transitions 0/372 dead transitions. [2024-06-27 18:49:53,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 372 transitions, 5973 flow [2024-06-27 18:49:53,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:49:53,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:49:53,360 INFO L175 Difference]: Start difference. First operand has 387 places, 344 transitions, 5091 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:49:53,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 372 transitions, 5973 flow [2024-06-27 18:49:54,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 372 transitions, 5788 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:54,803 INFO L231 Difference]: Finished difference. Result has 389 places, 344 transitions, 4945 flow [2024-06-27 18:49:54,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4906, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4945, PETRI_PLACES=389, PETRI_TRANSITIONS=344} [2024-06-27 18:49:54,804 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 18:49:54,804 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 344 transitions, 4945 flow [2024-06-27 18:49:54,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:54,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:54,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:54,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:49:54,805 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:54,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1001513057, now seen corresponding path program 7 times [2024-06-27 18:49:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31794060] [2024-06-27 18:49:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:56,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31794060] [2024-06-27 18:49:56,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31794060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:56,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:56,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731985915] [2024-06-27 18:49:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:56,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:56,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:49:56,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 344 transitions, 4945 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:56,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:56,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:49:56,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:58,179 INFO L124 PetriNetUnfolderBase]: 3782/8681 cut-off events. [2024-06-27 18:49:58,180 INFO L125 PetriNetUnfolderBase]: For 130807/130809 co-relation queries the response was YES. [2024-06-27 18:49:58,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40414 conditions, 8681 events. 3782/8681 cut-off events. For 130807/130809 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 85413 event pairs, 2384 based on Foata normal form. 8/8194 useless extension candidates. Maximal degree in co-relation 40245. Up to 6874 conditions per place. [2024-06-27 18:49:58,509 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 299 selfloop transitions, 60 changer transitions 0/369 dead transitions. [2024-06-27 18:49:58,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 369 transitions, 5587 flow [2024-06-27 18:49:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:49:58,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:49:58,510 INFO L175 Difference]: Start difference. First operand has 389 places, 344 transitions, 4945 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:49:58,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 369 transitions, 5587 flow [2024-06-27 18:49:59,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 369 transitions, 5177 flow, removed 14 selfloop flow, removed 73 redundant places. [2024-06-27 18:49:59,200 INFO L231 Difference]: Finished difference. Result has 325 places, 343 transitions, 4445 flow [2024-06-27 18:49:59,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4445, PETRI_PLACES=325, PETRI_TRANSITIONS=343} [2024-06-27 18:49:59,200 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 284 predicate places. [2024-06-27 18:49:59,201 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 343 transitions, 4445 flow [2024-06-27 18:49:59,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:49:59,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:59,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:49:59,201 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:59,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2060995368, now seen corresponding path program 1 times [2024-06-27 18:49:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:59,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821571937] [2024-06-27 18:49:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:59,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:59,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821571937] [2024-06-27 18:49:59,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821571937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:59,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:59,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:49:59,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840800158] [2024-06-27 18:49:59,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:59,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:49:59,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:49:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:49:59,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 18:49:59,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 343 transitions, 4445 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:59,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:59,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 18:49:59,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:00,257 INFO L124 PetriNetUnfolderBase]: 2376/6043 cut-off events. [2024-06-27 18:50:00,258 INFO L125 PetriNetUnfolderBase]: For 34962/34965 co-relation queries the response was YES. [2024-06-27 18:50:00,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22478 conditions, 6043 events. 2376/6043 cut-off events. For 34962/34965 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 57650 event pairs, 461 based on Foata normal form. 496/6275 useless extension candidates. Maximal degree in co-relation 22373. Up to 1733 conditions per place. [2024-06-27 18:50:00,316 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 144 selfloop transitions, 121 changer transitions 0/338 dead transitions. [2024-06-27 18:50:00,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 338 transitions, 4800 flow [2024-06-27 18:50:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:50:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:50:00,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-27 18:50:00,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6270270270270271 [2024-06-27 18:50:00,317 INFO L175 Difference]: Start difference. First operand has 325 places, 343 transitions, 4445 flow. Second operand 5 states and 116 transitions. [2024-06-27 18:50:00,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 338 transitions, 4800 flow [2024-06-27 18:50:00,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 338 transitions, 4097 flow, removed 19 selfloop flow, removed 39 redundant places. [2024-06-27 18:50:00,508 INFO L231 Difference]: Finished difference. Result has 291 places, 330 transitions, 3921 flow [2024-06-27 18:50:00,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3546, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3921, PETRI_PLACES=291, PETRI_TRANSITIONS=330} [2024-06-27 18:50:00,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 18:50:00,509 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 330 transitions, 3921 flow [2024-06-27 18:50:00,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:00,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:00,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:00,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:50:00,510 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:00,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1272983799, now seen corresponding path program 1 times [2024-06-27 18:50:00,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:00,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616939037] [2024-06-27 18:50:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:00,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:00,603 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 18:50:00,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616939037] [2024-06-27 18:50:00,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616939037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:00,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:00,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:00,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155286956] [2024-06-27 18:50:00,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:00,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:50:00,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:50:00,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:50:00,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 18:50:00,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 330 transitions, 3921 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 18:50:00,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:00,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 18:50:00,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:01,325 INFO L124 PetriNetUnfolderBase]: 1994/4914 cut-off events. [2024-06-27 18:50:01,326 INFO L125 PetriNetUnfolderBase]: For 16980/16987 co-relation queries the response was YES. [2024-06-27 18:50:01,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17394 conditions, 4914 events. 1994/4914 cut-off events. For 16980/16987 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 45125 event pairs, 654 based on Foata normal form. 0/4642 useless extension candidates. Maximal degree in co-relation 17313. Up to 2133 conditions per place. [2024-06-27 18:50:01,365 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 28 selfloop transitions, 3 changer transitions 298/348 dead transitions. [2024-06-27 18:50:01,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 348 transitions, 4392 flow [2024-06-27 18:50:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-27 18:50:01,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555984555984556 [2024-06-27 18:50:01,366 INFO L175 Difference]: Start difference. First operand has 291 places, 330 transitions, 3921 flow. Second operand 7 states and 144 transitions. [2024-06-27 18:50:01,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 348 transitions, 4392 flow [2024-06-27 18:50:01,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 348 transitions, 4085 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:01,462 INFO L231 Difference]: Finished difference. Result has 295 places, 48 transitions, 271 flow [2024-06-27 18:50:01,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3614, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=295, PETRI_TRANSITIONS=48} [2024-06-27 18:50:01,462 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 18:50:01,463 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 48 transitions, 271 flow [2024-06-27 18:50:01,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 18:50:01,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:01,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:01,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:50:01,463 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:01,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1555871795, now seen corresponding path program 2 times [2024-06-27 18:50:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:01,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688196668] [2024-06-27 18:50:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:01,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:01,969 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 18:50:01,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:01,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688196668] [2024-06-27 18:50:01,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688196668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:01,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:01,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:01,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745187146] [2024-06-27 18:50:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:01,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:50:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:50:01,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:50:02,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-06-27 18:50:02,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 48 transitions, 271 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 18:50:02,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:02,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-06-27 18:50:02,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:02,251 INFO L124 PetriNetUnfolderBase]: 151/450 cut-off events. [2024-06-27 18:50:02,252 INFO L125 PetriNetUnfolderBase]: For 992/992 co-relation queries the response was YES. [2024-06-27 18:50:02,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 450 events. 151/450 cut-off events. For 992/992 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2454 event pairs, 23 based on Foata normal form. 8/430 useless extension candidates. Maximal degree in co-relation 1351. Up to 100 conditions per place. [2024-06-27 18:50:02,255 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 21 selfloop transitions, 13 changer transitions 11/67 dead transitions. [2024-06-27 18:50:02,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 67 transitions, 409 flow [2024-06-27 18:50:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:02,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:50:02,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-27 18:50:02,256 INFO L175 Difference]: Start difference. First operand has 295 places, 48 transitions, 271 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:50:02,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 67 transitions, 409 flow [2024-06-27 18:50:02,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 67 transitions, 316 flow, removed 19 selfloop flow, removed 30 redundant places. [2024-06-27 18:50:02,259 INFO L231 Difference]: Finished difference. Result has 124 places, 47 transitions, 210 flow [2024-06-27 18:50:02,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=210, PETRI_PLACES=124, PETRI_TRANSITIONS=47} [2024-06-27 18:50:02,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-27 18:50:02,259 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 47 transitions, 210 flow [2024-06-27 18:50:02,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 18:50:02,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:02,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:02,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:50:02,260 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:02,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1218623315, now seen corresponding path program 3 times [2024-06-27 18:50:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:02,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299458844] [2024-06-27 18:50:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:02,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:50:02,272 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 18:50:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:50:02,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 18:50:02,318 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 18:50:02,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-27 18:50:02,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-27 18:50:02,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 18:50:02,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-06-27 18:50:02,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 18:50:02,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 18:50:02,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 18:50:02,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:50:02,325 INFO L445 BasicCegarLoop]: Path program histogram: [23, 14, 12, 10, 8, 7, 7, 5, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:02,329 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:50:02,329 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:50:02,392 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 18:50:02,392 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 18:50:02,393 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:50:02 BasicIcfg [2024-06-27 18:50:02,393 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:50:02,393 INFO L158 Benchmark]: Toolchain (without parser) took 311424.55ms. Allocated memory was 115.3MB in the beginning and 11.6GB in the end (delta: 11.5GB). Free memory was 54.2MB in the beginning and 9.0GB in the end (delta: -8.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2024-06-27 18:50:02,393 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:50:02,394 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:50:02,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.74ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 53.8MB in the beginning and 111.9MB in the end (delta: -58.1MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2024-06-27 18:50:02,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.76ms. Allocated memory is still 157.3MB. Free memory was 111.9MB in the beginning and 109.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:50:02,394 INFO L158 Benchmark]: Boogie Preprocessor took 58.21ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 105.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 18:50:02,394 INFO L158 Benchmark]: RCFGBuilder took 642.92ms. Allocated memory is still 157.3MB. Free memory was 105.6MB in the beginning and 111.5MB in the end (delta: -5.9MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2024-06-27 18:50:02,395 INFO L158 Benchmark]: TraceAbstraction took 310028.01ms. Allocated memory was 157.3MB in the beginning and 11.6GB in the end (delta: 11.4GB). Free memory was 111.5MB in the beginning and 9.0GB in the end (delta: -8.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2024-06-27 18:50:02,395 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 626.74ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 53.8MB in the beginning and 111.9MB in the end (delta: -58.1MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.76ms. Allocated memory is still 157.3MB. Free memory was 111.9MB in the beginning and 109.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.21ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 105.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 642.92ms. Allocated memory is still 157.3MB. Free memory was 105.6MB in the beginning and 111.5MB in the end (delta: -5.9MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * TraceAbstraction took 310028.01ms. Allocated memory was 157.3MB in the beginning and 11.6GB in the end (delta: 11.4GB). Free memory was 111.5MB in the beginning and 9.0GB in the end (delta: -8.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L722] 0 _Bool y$flush_delayed; [L723] 0 int y$mem_tmp; [L724] 0 _Bool y$r_buff0_thd0; [L725] 0 _Bool y$r_buff0_thd1; [L726] 0 _Bool y$r_buff0_thd2; [L727] 0 _Bool y$r_buff1_thd0; [L728] 0 _Bool y$r_buff1_thd1; [L729] 0 _Bool y$r_buff1_thd2; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L823] 0 pthread_t t1761; [L824] 0 //@ ghost multithreaded = 1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1761=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L824] FCALL, FORK 0 pthread_create(&t1761, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1761=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L825] 0 pthread_t t1762; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1761=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L826] 0 //@ assert ((((((((((((((((!multithreaded || (y$r_buff0_thd0 == (_Bool) 0)) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || ((y$mem_tmp == 0) || (y$mem_tmp == 1)))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))) && (!multithreaded || (y$read_delayed_var == 0))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || ((y$w_buff0 == 0) || (y$w_buff0 == 1)))) && (!multithreaded || ((y$w_buff1 == 0) || (y$w_buff1 == 1)))) && (!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)))) && (!multithreaded || (y$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (y$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1)))) && (!multithreaded || (y$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))); [L826] FCALL, FORK 0 pthread_create(&t1762, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1761=-2, t1762=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L827] 0 //@ assert ((((((((((((((((!multithreaded || (y$r_buff0_thd0 == (_Bool) 0)) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || ((y$mem_tmp == 0) || (y$mem_tmp == 1)))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))) && (!multithreaded || (y$read_delayed_var == 0))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || ((y$w_buff0 == 0) || (y$w_buff0 == 1)))) && (!multithreaded || ((y$w_buff1 == 0) || (y$w_buff1 == 1)))) && (!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)))) && (!multithreaded || (y$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (y$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1)))) && (!multithreaded || (y$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1761=-2, t1762=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L771] 2 y$w_buff1 = y$w_buff0 [L772] 2 y$w_buff0 = 1 [L773] 2 y$w_buff1_used = y$w_buff0_used [L774] 2 y$w_buff0_used = (_Bool)1 [L775] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L775] RET 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L776] 2 y$r_buff1_thd0 = y$r_buff0_thd0 [L777] 2 y$r_buff1_thd1 = y$r_buff0_thd1 [L778] 2 y$r_buff1_thd2 = y$r_buff0_thd2 [L779] 2 y$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L782] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L783] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L784] 2 y$flush_delayed = weak$$choice2 [L785] 2 y$mem_tmp = y [L786] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L787] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L788] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L789] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L790] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L791] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L792] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L793] 2 __unbuffered_p1_EAX = y [L794] 2 y = y$flush_delayed ? y$mem_tmp : y [L795] 2 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L798] 2 __unbuffered_p1_EBX = x VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L741] 1 x = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L746] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L747] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L748] 1 y$flush_delayed = weak$$choice2 [L749] 1 y$mem_tmp = y [L750] 1 y = !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L751] 1 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L752] 1 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L753] 1 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L754] 1 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L755] 1 y$r_buff0_thd1 = weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L756] 1 y$r_buff1_thd1 = weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L757] 1 __unbuffered_p0_EAX = y [L758] 1 y = y$flush_delayed ? y$mem_tmp : y [L759] 1 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L801] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L802] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L803] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L804] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L805] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L808] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L764] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L828] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1761=-2, t1762=-1, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L830] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L830] RET 0 assume_abort_if_not(main$tmp_guard0) [L832] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L833] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L834] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L835] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L836] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1761=-2, t1762=-1, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L839] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1761=-2, t1762=-1, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L841] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L19] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 824]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 56 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 309.9s, OverallIterations: 118, TraceHistogramMax: 1, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.0s, AutomataDifference: 201.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8161 SdHoareTripleChecker+Valid, 35.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7091 mSDsluCounter, 3669 SdHoareTripleChecker+Invalid, 30.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3255 mSDsCounter, 1649 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57136 IncrementalHoareTripleChecker+Invalid, 58785 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1649 mSolverCounterUnsat, 414 mSDtfsCounter, 57136 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1230 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2117 ImplicationChecksByTransitivity, 34.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8416occurred in iteration=106, InterpolantAutomatonStates: 1094, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 106.3s InterpolantComputationTime, 1956 NumberOfCodeBlocks, 1956 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 1812 ConstructedInterpolants, 0 QuantifiedInterpolants, 86694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 117 InterpolantComputations, 117 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-06-27 18:50:02,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE